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#include <cstdio>
#include <unordered_set>
using namespace std;
int main() {
unordered_set<int> set;
int cases;
scanf("%d", &cases);
for (int i = 0; i < cases; i++) {
set.clear();
int N, P;
scanf("%d", &N); scanf("%d", &P);
for (int j = 0; j < P; j++) {
int hartal;
scanf("%d", &hartal);
for (int m = hartal; m <= N; m+=hartal) if(m % 7 != 0 && m % 7 != 6) set.insert(m);
}
printf("%d\n", set.size());
}
return 0;
}