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112
description
stringlengths
29
13k
source
int64
1
7
difficulty
int64
0
25
solution
stringlengths
7
983k
language
stringclasses
4 values
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
a=int(input()) print(6*a*(a-1)+1)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int work(string s) { reverse((s).begin(), (s).end()); int ans = 0, p = 1; for (int i = s.length() - 1; i >= 0; i--) { ans += (s[i] - '0') * p; p *= 10; } return ans; } int main() { int a; cin >> a; long long ans = 1; for (int i = 2; i <= a; i++) { ans += (i - 1) * 2 * 6; } cout << ans << endl; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long n; cin >> n; cout << 6 * n * (n - 1) + 1; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.*; import java.util.*; public class A { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(System.in); PrintWriter out = new PrintWriter(System.out); int a = sc.nextInt(); int ans = 1; for(int i = 2; i <= a; ++i) ans += 6 * (i * 2 - 2); out.println(ans); out.close(); } static class Scanner { StringTokenizer st; BufferedReader br; public Scanner(InputStream s){ br = new BufferedReader(new InputStreamReader(s));} public Scanner(FileReader s) throws FileNotFoundException { br = new BufferedReader(s);} public String next() throws IOException { while (st == null || !st.hasMoreTokens()) st = new StringTokenizer(br.readLine()); return st.nextToken(); } public int nextInt() throws IOException {return Integer.parseInt(next());} public long nextLong() throws IOException {return Long.parseLong(next());} public String nextLine() throws IOException {return br.readLine();} public double nextDouble() throws IOException { return Double.parseDouble(next()); } public boolean ready() throws IOException {return br.ready();} } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; const long long n = 2000000000; int main() { long long a; cin >> a; long long res = 1, deg = 2; for (long long i = 1; i < a; ++i) { res = (res + 6 * deg) % n; deg = (deg + 2) % n; } cout << res << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class main { public static void main(String[] args) { Scanner s = new Scanner (System.in); int n= s.nextInt();int ans=0; n --; for(int i=1; i<=n; i++) ans += (12 * i); System.out.println(ans+1); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int n; long long f[100005]; int main() { scanf("%d", &n); f[1] = 1; for (int i = 2; i <= n; i++) f[i] = (i * 2 - 1) * 6 + f[i - 1] - 6; printf("%lld\n", f[n]); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int n, m, k, a[18257 + 7]; int main() { cin >> n; a[1] = 1; k = 12; for (int i = 2; i <= n; i++, k += 12) a[i] = a[i - 1] + k; cout << a[n]; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class Main { public static void main(String[] args) throws Exception{ new Main().run(); } private void run() throws Exception{ Scanner input = new Scanner(System.in); int num = input.nextInt(); System.out.println(6*(num-1)*(num)+1); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int a, s = 1; cin >> a; for (int i = 1; i < a; i++) s += i * 12; cout << s; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { unsigned long long num, x = 1, i; cin >> num; for (i = 1; i < num; i++) x = x + (12 * i); cout << x << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) s = 1 for i in range(1,n): s += 12*i # print(s) print(s)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long int n; cin >> n; cout << 6 * n * (n - 1) + 1; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; long long mod(long long x) { return ((x % 1000000009 + 1000000009) % 1000000009); } long long add(long long a, long long b) { return mod(mod(a) + mod(b)); } long long mult(long long a, long long b) { return mod(mod(a) * mod(b)); } long long modPow(long long a, long long b) { if (b == 0) return 1LL; if (b == 1) return a % 1000000009; long long res = 1; while (b) { if (b % 2 == 1) res = mult(res, a); a = mult(a, a); b = b / 2; } return res; } vector<long long> v(1000000); int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); ; long long n; cin >> n; v[1] = 1; long long count = 1; for (long long i = 2; i <= n; i++) { v[i] = v[i - 1] + 6 + 6 * count; count += 2; } cout << v[n] << "\n"; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n=input() print (6*n*(n-1))+1,"\n"
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) if n == 1: print(1) exit(0) k = 12 ans = k for i in range(n - 2): k = k + 12 ans += k print(ans + 1)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class Star{ public static void main(String[] args){ Scanner in = new Scanner(System.in); int n = in.nextInt(); long ans = 1; long g = 0; for( int i = 2; i <= n; i++){ g += 12; ans += g; } System.out.println(ans); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int n, a = 12, b = 1; cin >> n; for (int i = 1; i < n; i++) { b += a; a += 12; } cout << b << endl; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); int a, ans = 1, p = 0; cin >> a; if (a == 1) ans = 1; for (int i = 1; i < a; ++i) { p += 12; ans += p; } cout << ans << '\n'; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.*; import java.math.BigInteger; import java.util.*; public class Main { public static void main(String[] args) throws IOException { (new Main()).solve(); } public Main() { } MyReader in = new MyReader(); PrintWriter out = new PrintWriter(System.out); void solve() throws IOException { //BufferedReader in = new BufferedReader(new //InputStreamReader(System.in)); //Scanner in = new Scanner(System.in); //Scanner in = new Scanner(new FileReader("forbidden-triples.in")); //PrintWriter out = new PrintWriter("forbidden-triples.out"); int n = in.nextInt(); int d = 12; int res = 1; for (int i = 2; i <= n; i++) { res += d; d += 12; } out.println(res); out.close(); } int reverse(int a) { int res = 0; while (a > 0) { res = res * 10 + a % 10; a /= 10; } return res; } }; class MyReader { private BufferedReader in; String[] parsed; int index = 0; public MyReader() { in = new BufferedReader(new InputStreamReader(System.in)); } public int nextInt() throws NumberFormatException, IOException { if (parsed == null || parsed.length == index) { read(); } return Integer.parseInt(parsed[index++]); } public long nextLong() throws NumberFormatException, IOException { if (parsed == null || parsed.length == index) { read(); } return Long.parseLong(parsed[index++]); } public String nextString() throws IOException { if (parsed == null || parsed.length == index) { read(); } return parsed[index++]; } private void read() throws IOException { parsed = in.readLine().split(" "); index = 0; } public String readLine() throws IOException { return in.readLine(); } };
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long a; cin >> a; cout << 6 * a * (a - 1) + 1; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long n; cin >> n; cout << 6 * n * (n - 1) + 1 << endl; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class C_171_b { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); long sum = 1 ; for (int i = 1; i <= n-1; i++) { sum +=2*i*6; } System.out.println(sum); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int a; cin >> a; cout << 6 * a * (a - 1) + 1; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
def calc(n): return (1+n)*n/2 n=int(raw_input()) p=1 q=0 for i in range(n-1): p+=3 q+=1 print calc(p)+calc(q)*3
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
x = int(input()) print(6*x*(x-1)+1)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.IOException; import java.io.OutputStreamWriter; import java.io.BufferedWriter; import java.util.InputMismatchException; import java.io.OutputStream; import java.io.PrintWriter; import java.util.NoSuchElementException; import java.io.Writer; import java.math.BigInteger; import java.io.InputStream; /** * Built using CHelper plug-in * Actual solution is at the top * @author Alex */ public class Main { public static void main(String[] args) { InputStream inputStream = System.in; OutputStream outputStream = System.out; InputReader in = new InputReader(inputStream); OutputWriter out = new OutputWriter(outputStream); TaskB solver = new TaskB(); solver.solve(1, in, out); out.close(); } } class TaskB { public void solve(int testNumber, InputReader in, OutputWriter out) { int n = in.ri(); out.printLine(6 * n * (n - 1) + 1); } } class InputReader { private InputStream stream; private byte[] buf = new byte[1024]; private int curChar; private int numChars; private SpaceCharFilter filter; public InputReader(InputStream stream) { this.stream = stream; } public int read() { if (numChars == -1) throw new InputMismatchException(); if (curChar >= numChars) { curChar = 0; try { numChars = stream.read(buf); } catch (IOException e) { throw new InputMismatchException(); } if (numChars <= 0) return -1; } return buf[curChar++]; } public int ri(){ return readInt(); } public int readInt() { int c = read(); while (isSpaceChar(c)) c = read(); int sgn = 1; if (c == '-') { sgn = -1; c = read(); } int res = 0; do { if (c < '0' || c > '9') throw new InputMismatchException(); res *= 10; res += c - '0'; c = read(); } while (!isSpaceChar(c)); return res * sgn; } public boolean isSpaceChar(int c) { if (filter != null) return filter.isSpaceChar(c); return isWhitespace(c); } public static boolean isWhitespace(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } public interface SpaceCharFilter { public boolean isSpaceChar(int ch); } } class OutputWriter { private final PrintWriter writer; public OutputWriter(OutputStream outputStream) { writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream))); } public void close() { writer.close(); } public void printLine(int i) { writer.println(i); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int n; int main() { cin >> n; cout << 6 * n * (n - 1) + 1; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long n; cin >> n; cout << (1ll + ((n - 1ll) * n * 6ll)) << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n=int(input()) sum = 1 if(n==1): print(sum) else: for i in range(n-1): sum += 12*(n-1) n=n-1 print(sum)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int a[200000]; int main() { int n, m, i; a[1] = 1; for (i = 2; i <= 18257; i++) a[i] = a[i - 1] + 12 * (i - 1); while (~scanf("%d", &n)) { printf("%d\n", a[n]); } return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; int res = 0; for (int i = 1; i < n; i++) res += i; int x = 2 * n - 1; for (int i = 1; i < n; i++) res += x + i; res *= 2; res += x; cout << res; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.InputStream; import java.io.OutputStream; import java.io.InputStreamReader; import java.io.BufferedReader; import java.io.IOException; import java.io.PrintWriter; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.util.Arrays; import java.util.Random; import java.util.StringTokenizer; public class Task { private static final boolean readFromFile = false; public static void main(String args[]){ InputStream inputStream = System.in; OutputStream outputStream = System.out; FileOutputStream fileOutputStream; FileInputStream fileInputStream; if (readFromFile){ try{ fileInputStream = new FileInputStream(new File("input.txt")); fileOutputStream = new FileOutputStream(new File("output.txt")); }catch (FileNotFoundException e){ throw new RuntimeException(e); } } PrintWriter out = new PrintWriter((readFromFile)?fileOutputStream:outputStream); InputReader in = new InputReader((readFromFile)?fileInputStream:inputStream); Solver s = new Solver(in,out); s.solve(); out.close(); } } class Solver{ InputReader in; PrintWriter out; public void solve(){ int n = in.nextInt(), razn = 12, ans = 1; for (int i=1;i<n;i++){ ans += razn; razn += 12; } out.println(ans); } Solver(InputReader in, PrintWriter out){ this.in=in; this.out=out; } } class InputReader{ private BufferedReader buf; private StringTokenizer tok; InputReader(InputStream in){ tok = null; buf = new BufferedReader(new InputStreamReader(in)); } InputReader(FileInputStream in){ tok = null; buf = new BufferedReader(new InputStreamReader(in)); } public String next(){ while (tok==null || !tok.hasMoreTokens()){ try{ tok = new StringTokenizer(buf.readLine()); }catch (IOException e){ throw new RuntimeException(e); } } return tok.nextToken(); } public int nextInt(){ return Integer.parseInt(next()); } public long nextLong(){ return Long.parseLong(next()); } public double nextDouble(){ return Double.parseDouble(next()); } public float nextFloat(){ return Float.parseFloat(next()); } public String nextLine(){ try{ return buf.readLine(); }catch (IOException e){ return null; } } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.*; public class B { public static void main(String args[]) { Scanner scan = new Scanner(System.in); int n = scan.nextInt(); int rtn = 1; for(int i=2;i <= n;i++) rtn += (i-1)*12; System.out.println(rtn); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) b = (6*n*(n - 1)) + 1 print(b)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
a = int(input()) accu = 0 cur = 1 for i in range(a): cur += accu accu += 12 print(cur)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#!/usr/bin/python import sys import math def num(x): return (x - 1) * 2 * 6 n = int((sys.stdin.readline()).strip()) if n <= 0: print "Error n=%d" % n quit(-1) if n == 1: print "1" quit() result = 1 for i in range(2, n+1): result += num(i) print result quit()
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int n, ans = 1; int main() { cin >> n; for (int i = 2; i <= n; ++i) ans += (i - 1) * 12; cout << ans; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long int number = 0; cin >> number; long long int answer = 1; for (int i = 2; i <= number; i++) answer = answer + 12 * (i - 1); cout << answer << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.*; import java.util.*; import java.math.*; //4/1/12 7:38 PM //by Abrackadabra public class B { public static void main(String[] args) throws IOException { if (args.length > 0 && args[0].equals("Abra")) debugMode = true; new B().run(); } int IOMode = 0; //0 - consoleIO, 1 - <taskName>.in/out, 2 - input.txt/output.txt, 3 - test case generator String taskName = ""; void solve() throws IOException { int n = nextInt(); int res = 0; for (int i = n; i >= 1; i--) { if (i == 1) { res++; break; } res += i * 12 - 12; } out.println(res); } int calc(int x) { if (x == 1) return 1; return x * 12 - 12 + calc(x - 1); } long startTime = System.nanoTime(), tempTime = startTime, finishTime = startTime; long startMem = Runtime.getRuntime().totalMemory(), finishMem = startMem; void run() throws IOException { init(); if (debugMode) { con.println("Start"); con.println("Console:"); } solve(); finishTime = System.nanoTime(); finishMem = Runtime.getRuntime().totalMemory(); out.flush(); if (debugMode) { int maxSymbols = 1000; BufferedReader tbr = new BufferedReader(new FileReader("input.txt")); char[] a = new char[maxSymbols]; tbr.read(a); if (a[0] != 0) { con.println("File input"); con.println(a); if (a[maxSymbols - 1] != 0) con.println("..."); } tbr = new BufferedReader(new FileReader("output.txt")); a = new char[maxSymbols]; tbr.read(a); if (a[0] != 0) { con.println("File output"); con.println(a); if (a[maxSymbols - 1] != 0) con.println("..."); } con.println("Execution time: " + (finishTime - startTime) / 1000000000.0 + " sec"); con.println("Used memory: " + (finishMem - startMem) + " bytes"); con.println("Total memory: " + Runtime.getRuntime().totalMemory() + " bytes"); } } boolean tick(double x) { if (System.nanoTime() - tempTime > x * 1e9) { tempTime = System.nanoTime(); con.println("Tick at " + (tempTime - startTime) / 1000000000 + " sec"); con.print(" "); return true; } return false; } static boolean debugMode = false; PrintStream con = System.out; void init() throws IOException { if (debugMode && IOMode != 3) { br = new BufferedReader(new FileReader("input.txt")); out = new PrintWriter(new FileWriter("output.txt")); } else switch (IOMode) { case 0: br = new BufferedReader(new InputStreamReader(System.in)); out = new PrintWriter(System.out); break; case 1: br = new BufferedReader(new FileReader(taskName + ".in")); out = new PrintWriter(new FileWriter(taskName + ".out")); break; case 2: br = new BufferedReader(new FileReader("input.txt")); out = new PrintWriter(new FileWriter("output.txt")); break; case 3: out = new PrintWriter(new FileWriter("input.txt")); break; } } BufferedReader br; PrintWriter out; StringTokenizer in; boolean hasMoreTokens() throws IOException { while (in == null || !in.hasMoreTokens()) { String line = br.readLine(); if (line == null) return false; in = new StringTokenizer(line); } return true; } String nextString() throws IOException { return hasMoreTokens() ? in.nextToken() : null; } int nextInt() throws IOException { return Integer.parseInt(nextString()); } long nextLong() throws IOException { return Long.parseLong(nextString()); } double nextDouble() throws IOException { return Double.parseDouble(nextString()); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
a=[0]*18258 a[1]=1 n=int(input()) for i in range (2,n+1): a[i]=a[i-1] + ((i*2 - 2)*6) print(a[n])
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.*; import java.util.*; public class B implements Runnable { public static void main(String[] args) { new Thread(new B()).run(); } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer in; PrintWriter out = new PrintWriter(System.out); public String nextToken() throws IOException { while (in == null || !in.hasMoreTokens()) { in = new StringTokenizer(br.readLine()); } return in.nextToken(); } public int nextInt() throws IOException { return Integer.parseInt(nextToken()); } public double nextDouble() throws IOException { return Double.parseDouble(nextToken()); } public void solve() throws IOException { int a = nextInt(); int ans = 1; for (int i = 2; i <= a; i++) { ans += 6 * (2 * i - 2); } out.println(ans); } public void run() { try { solve(); out.close(); } catch (IOException e) { e.printStackTrace(); System.exit(1); } } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { ios::sync_with_stdio(0); cin.tie(0); long long int i, n, sum = 1; cin >> n; for (i = 1; i < n; i++) sum += 12 * i; cout << sum << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; void solve(void) { int N; long int s = 0; cin >> N; for (int i = 2; i <= N; i++) s += i - 1; cout << s * 6 * 2 + 1 << endl; } int main(int argc, char const *argv[]) { solve(); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) print((6*n*(n-1))+1)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> int in() { int r = 0, c; for (c = getchar(); c <= 32; c = getchar()) ; if (c == '-') return -in(); for (; c > 32; r = (r << 1) + (r << 3) + c - '0', c = getchar()) ; return r; } int main() { int N = in(); long long res = 1; for (int i = 2; i <= N; i++) { res = res + ((i * 2 - 1) * 6) - 6; if (res > 2000000000) { res = 2000000000; break; } } printf("%d\n", res); }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.*; import java.util.*; import java.text.DecimalFormat; public class Main { public static void main(String[] args) { InputStream inputStream = System.in; OutputStream outputStream = System.out; InputReader in = new InputReader(inputStream); PrintWriter out = new PrintWriter(outputStream); Solution.solve(in, out); out.close(); } static final Random random=new Random(); static void ruffleSort(int[] a) { int n=a.length;//shuffle, then sort for (int i=0; i<n; i++) { int oi=random.nextInt(n), temp=a[oi]; a[oi]=a[i]; a[i]=temp; } Arrays.sort(a); } static long gcd(long x, long y){ if(x==0) return y; if(y==0) return x; long r=0, a, b; a = Math.max(x, y); b = Math.min(x, y); r = b; while(a % b != 0){ r = a % b; a = b; b = r; } return r; } static long modulo(long a,long b,long c){ long x=1,y=a%c; while(b > 0){ if(b%2 == 1) x=(x*y)%c; y = (y*y)%c; b = b>>1; } return x%c; } public static void debug(Object... o){ System.err.println(Arrays.deepToString(o)); } static String printPrecision(double d){ DecimalFormat ft = new DecimalFormat("0.00000000000"); return String.valueOf(ft.format(d)); } static int countBit(long mask){ int ans=0; while(mask!=0){ mask&=(mask-1); ans++; } return ans; } static class InputReader { public BufferedReader reader; public StringTokenizer tokenizer; public InputReader(InputStream stream) { reader = new BufferedReader(new InputStreamReader(stream), 32768); tokenizer = null; } public String next() { while (tokenizer == null || !tokenizer.hasMoreTokens()) { try { tokenizer = new StringTokenizer(reader.readLine()); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken(); } public int nextInt() { return Integer.parseInt(next()); } public long nextLong() { return Long.parseLong(next()); } public double nextDouble() { return Double.parseDouble(next()); } public int[] readArray(int n) { int[] arr=new int[n]; for(int i=0;i<n;i++) arr[i]=nextInt(); return arr; } } } class Solution { static long mod=(long)1e9+7; static long mod1=998244353; public static void solve(Main.InputReader in, PrintWriter out) { long n=in.nextLong(); out.println((6*(n)*(n-1)+1)); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> int main() { unsigned long long n, star_n; scanf("%I64u", &n); star_n = 6LL * n * (n - 1) + 1; printf("%I64u", star_n); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n=int(input()) if n==1: print(1) else: print(1+((n-1)*(12*n))//2)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) x = int(12*n*(n-1)/2 + 1) print(x)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(raw_input()) ans = 1 for i in range(1,n): ans += 12*i print ans
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; static const double EPS = 1e-5; int num = 0; void star(int n) { if (n == 1) num++; if (n > 1) { num += 12 * (n - 1); star(n - 1); } } int main(int argc, const char* argv[]) { int a; cin >> a; star(a); cout << num; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
N = input() print 1+6*N*(N-1)
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int N; int main(void) { scanf("%d", &N); printf("%d\n", 6 * N * (N - 1) + 1); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long a, b = 1, x = 0; cin >> a; a--; for (int k = 1; k <= a; k++) { x += 2; b += 6 * x; } cout << b; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class B { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int ans = 1; for (int i = 2; i <= a; i++) { ans += 12*(i-1); } System.out.println(ans); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.awt.*; import java.awt.geom.*; import java.io.*; import java.math.*; import java.text.*; import java.util.*; /* br = new BufferedReader(new FileReader("input.txt")); pw = new PrintWriter(new BufferedWriter(new FileWriter("output.txt"))); br = new BufferedReader(new InputStreamReader(System.in)); pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out))); */ public class Main { private static BufferedReader br; private static StringTokenizer st; private static PrintWriter pw; static int[][] dp; static LinkedList<Integer>[] edges; static int[] dist; public static void main(String[] args) throws IOException { br = new BufferedReader(new InputStreamReader(System.in)); pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out))); int n = readInt(); long ret = 1; for(int i = 2; i <= n; i++) { ret += 12*(i-1); } pw.println(ret); pw.close(); } /* NOTEBOOK CODE */ public static void loadArray(int[][] grid) throws IOException { for(int[] a: grid) loadArray(a); } public static void loadArray(int[] in) throws IOException { for(int i = 0; i < in.length; i++) in[i] = readInt(); } public static void loadArray(long[] in) throws IOException { for(int i = 0; i < in.length; i++) in[i] = readLong(); } private static long readLong() throws IOException { return Long.parseLong(nextToken()); } private static double readDouble() throws IOException { return Double.parseDouble(nextToken()); } private static int readInt() throws IOException { return Integer.parseInt(nextToken()); } private static String nextToken() throws IOException { while(st == null || !st.hasMoreTokens()) { if(!br.ready()) { pw.close(); System.exit(0); } st = new StringTokenizer(br.readLine().trim()); } return st.nextToken(); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) otv = 1 for i in range(1, n): otv += 12 * i print(otv)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> #pragma GCC target("avx2") #pragma GCC optimization("O3") #pragma GCC optimization("unroll-loops") using namespace std; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); int a, res = 1, s = 0; cin >> a; for (int i = 1; i < a; i++) { s += 12; res += s; } cout << res; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int n, m = 1; cin >> n; for (int i = 1; i < n; i++) { m += (12 * i); } cout << m << endl; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int n, output = 1; cin >> n; if (n == 1) { cout << n; return 0; } else while (n > 1) { output += (n - 1) * 12; n--; } cout << output << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.*; public class CodeForces{ public static int findIt(int m){ if(m<=1) return 1; else return ((m-1)*12)+findIt(m-1); } public static void main(String[] arg){ Scanner sc = new Scanner(System.in); System.out.print(findIt(sc.nextInt())); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
def star(n): f = 1 while n: n -=1 f += n*12 return f print(star(int(input())))
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> int main() { long long a, b, c, sum; while (scanf("%I64d", &a) != EOF) { sum = 1; c = 12; for (b = 1; b < a; b++) { sum += c; c = c + 12; } printf("%I64d\n", sum); } }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> int main() { int a; scanf("%d", &a); printf("%d", 1 + 6 * (a - 1) * a); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { unsigned long long int a, s = 0, i; cin >> a; for (i = 1; i <= a; i++) { s = s + i - 1; } cout << s * 12 + 1 << endl; ; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.*; public class P171B { public static void main(String[] args) { Scanner in = new Scanner(System.in); int A = in.nextInt(); int ans = 1; for (int i = 1; i < A; ++i) ans += 12*i; System.out.println(ans); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int a; scanf("%d", &a); printf("%I64d\n", 1 + (long long)a * (long long)(a - 1) * 6); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.*; public class Main { public static void main(String[] args) { Scanner input = new Scanner(System.in); int n = input.nextInt()-1; int a[]=new int[18258]; a[0]=1; a[1]=13; for (int i=2; i<=n; i++) { a[i]=12*i+a[i-1]; } System.out.println(a[n]); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int a; cin >> a; long long int ans = 6 * a * (a - 1) + 1; cout << ans << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
// package mainpackage; import java.io.*; import java.util.*; public class Main { public static void main(String... args) throws Exception { out = new PrintWriter(System.out); new Main().solve(); out.close(); } private static PrintWriter out; private BufferedReader reader; private int a; private void solve() throws Exception { reader = new BufferedReader(new InputStreamReader(System.in)); a = Integer.parseInt(reader.readLine()); out.println(6 * a * (a - 1) + 1); reader.close(); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n=int(input()) if n==1: print(1) else: s=0 for i in range(n): s+=12*i s+=1 print(s)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> #pragma comment(linker, "/STACK:64000000") using namespace std; int a; int main() { cin >> a; int ans = 1; for (int i = 2; i <= a; i++) { ans += (2 * i - 2) * 6; } cout << ans << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> inline int getInt() { int s; scanf("%d", &s); return s; } using namespace std; int main() { int ans = 1; int n = getInt(); for (int i = 0; i < (int)(n - 1); i++) { ans += ((i + 1) * 2 + 1) * 3; ans += ((i + 1) * 2 - 1) * 3; } printf("%d\n", ans); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
from __future__ import division def read(func=None): return func(raw_input()) if func else raw_input() ################################ a = read(int) def solve(a): if a == 1: return 1 if a == 2: return 13 prev1 = 3 prev2 = 1 total = 13 for i in xrange(3, a + 1): prev1 += 2 prev2 += 2 total += (prev1 + prev2) * 3 return total print solve(a)
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
def f(x): return 6 + 6*(2*x + 1) a = int(raw_input()) sum = 1 for x in xrange(a-1): sum += f(x) print sum
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = input() print 1+sum([12*(i-1) for i in range(2,n+1)])
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.*; public class Main { public static void main(String[] args) { Scanner s = new Scanner(System.in); long n = s.nextLong(); long res = 6*n*(n-1)+1; System.out.println(res); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n=int(input()) print(6*n*n-6*n+1)
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long i, j, k, l, n, m, p; while (cin >> n) { k = 0; for (i = 1; i <= n - 1; i++) { k += 12 * i; } k++; printf("%lld\n", k); } }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; long long res = 1; int main() { int n; cin >> n; for (int i = 1; i < n; ++i) { res += i * 12; } cout << res; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int A; cin >> A; cout << 6 * A * (A - 1) + 1 << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(input()) print(1+6*n*(n-1))
PYTHON3
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class Star { public static void main(String[] args) { new Star().solve(); } public void solve(){ Scanner in = new Scanner(System.in); int input = in.nextInt(); int ans = recurse(input); System.out.println(ans); } public int recurse(int input){ if(input == 1){ return 1; } int ans =(input -1)*12; return recurse(input-1)+ans; } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int n, s, i; cin >> n; s = 1; for (i = 2; i <= n; i++) s += (2 * i - 1) * 6 - 6; cout << s; cin.get(); cin.get(); }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.awt.Point; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Scanner; public class CF_C { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int[] vals=new int[18258]; vals[1]=1; for(int i=2;i<vals.length;i++) vals[i]=vals[i-1]+6*((i-2)*2+1)+6; System.out.println(vals[sc.nextInt()]); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long int a = 0; cin >> a; cout << 6 * a * (a - 1) + 1 << "\n"; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; n--; int sum = 1; for (int i = 1; i <= n; i++) sum += 12 * i; cout << sum; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class Star { public static void main(String[] args) { Scanner in = new Scanner(System.in); int num = in.nextInt(); int sum = (num-1)*(num) / 2; System.out.println(12*sum + 1); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long int n, ans = 1, k; cin >> n; ans = 3 * n - 2; ans = (ans * (ans + 1)) / 2; k = 3 * (n * (n - 1)) / 2; cout << k + ans; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long n; cin >> n; cout << 1 + 6 * n * (n - 1); }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int a; int x; cin >> a; x = 6 * a * (a - 1) + 1; cout << x << endl; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { int a; cin >> a; int output = 0; int an = 12 * (a - 1); output = an / 2 * a; cout << output + 1; return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(raw_input()) c = 1 for i in xrange(n): c += 12 * i print c #print (12 ** (n + 1) - 1) / (12 ** n - 1)
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> int main() { int n; while (scanf("%d", &n) != EOF) { printf("%d\n", 6 * n * (n - 1) + 1); } }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(raw_input()) ans = 3 * (n * (n-1) >> 1) ans += ((3*n-2) * (3*n-1) >> 1) print ans
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
n = int(raw_input()); print 6*n*(n - 1) + 1;
PYTHON
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.util.Scanner; public class Star { public static Scanner in = new Scanner(System.in); public static void main(String[] args) { int numLayers = in.nextInt(); int total = 0; int odd = 3; for (int i = 0; i < numLayers; i ++) { if (i == 0) total += 1; else { total += odd * 6 - 6; odd += 2; } } System.out.println(total); } }
JAVA
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
#include <bits/stdc++.h> using namespace std; int main() { long long n; cin >> n; cout << (long long)(6 * n * (n - 1) + 1); return 0; }
CPP
171_B. Star
<image> Input The input contains a single integer a (1 ≤ a ≤ 18257). Output Print a single integer output (1 ≤ output ≤ 2·109). Examples Input 2 Output 13
2
8
import java.io.OutputStream; import java.io.IOException; import java.io.PrintWriter; import java.util.InputMismatchException; import java.io.Writer; import java.math.BigInteger; import java.io.InputStream; /** * Built using CHelper plug-in * Actual solution is at the top * @author Egor Kulikov ([email protected]) */ public class Main { public static void main(String[] args) { InputStream inputStream = System.in; OutputStream outputStream = System.out; InputReader in = new InputReader(inputStream); OutputWriter out = new OutputWriter(outputStream); TaskB solver = new TaskB(); solver.solve(1, in, out); out.close(); } } class TaskB { public void solve(int testNumber, InputReader in, OutputWriter out) { int n = in.readInt(); long answer = 1; for (int i = 1; i < n; i++) answer += 12 * i; out.printLine(answer); } } class InputReader { private InputStream stream; private byte[] buf = new byte[1024]; private int curChar; private int numChars; public InputReader(InputStream stream) { this.stream = stream; } public int read() { if (numChars == -1) throw new InputMismatchException(); if (curChar >= numChars) { curChar = 0; try { numChars = stream.read(buf); } catch (IOException e) { throw new InputMismatchException(); } if (numChars <= 0) return -1; } return buf[curChar++]; } public int readInt() { int c = read(); while (isSpaceChar(c)) c = read(); int sgn = 1; if (c == '-') { sgn = -1; c = read(); } int res = 0; do { if (c < '0' || c > '9') throw new InputMismatchException(); res *= 10; res += c - '0'; c = read(); } while (!isSpaceChar(c)); return res * sgn; } public static boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } } class OutputWriter { private final PrintWriter writer; public OutputWriter(OutputStream outputStream) { writer = new PrintWriter(outputStream); } public OutputWriter(Writer writer) { this.writer = new PrintWriter(writer); } public void print(Object...objects) { for (int i = 0; i < objects.length; i++) { if (i != 0) writer.print(' '); writer.print(objects[i]); } } public void printLine(Object...objects) { print(objects); writer.println(); } public void close() { writer.close(); } }
JAVA