#include<iostream>
#include<cstdlib>
#define M 3700
using namespace std;
bool lost[M];
int main()
{
register int h,i,j,l,t,n,p;
//freopen("in.txt","r",stdin);
scanf("%d",&t);
while(t--)
{
l=0;
scanf("%d%d",&n,&p);
for(i=0;i<=n;i++)lost[i]=false;
for(i=1;i<=p;i++)
{
scanf("%d",&h);
for(j=h;j<=n;j=j+h)
if(j%7!=0&&j%7!=6)
lost[j]=true;
}
for(i=1;i<=n;i++)
if(lost[i])l++;
printf("%d\n",l);
}
exit(0);
}
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