uva10050-罢工

#include <iostream>
#include <cstring>
using namespace std;
int main ()
{
    int a[4000], count, b, t, n, p;
    cin>>t;
    while(t--)
    {
        count = 0;
        memset(a,0,sizeof(a));
        cin>>n>>p;
        for(int i = 0; i < p; i++)
        {
            cin>>b;
            for(int j = b; j <= n; j+=b)
            a[j] = 1;
        }
        for(int i = 1; i <= n; i++)
        {
            if(i%7==6||i%7==0)continue;
            if(a[i]) count++;
        }
        cout<<count<<endl;
    }
    return 0;
}//水题，不过我真的不知道哪些大神是怎么0秒过的