#include<stdio.h>

int div[]={2,3,5,7,11};
int r=0,q,n;

int main()
{
    freopen("dtcsu.in","r",stdin);
    freopen("dtcsu.out","w",stdout);

    for(int i=0;i<276997;++i)scanf("\n");
    scanf("%d",&q);
    for(int i=0;i<q;++i)
    {
        scanf("%d",&n);
        for(int j=0;j<5;++j)
            while(n%div[j]==0)n/=div[j];
         if(n==1)r++;
    }
    printf("%d\n",r);
    return 0;
}