View Code of Problem 3857

#include <stdio.h>

int main()
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        int n;
        scanf("%d",&n);
        int a[n];
        for(int i=0;i<n;++i)
            scanf("%d",&a[i]);
        int cnt=0;
        for(int i=0;i<n;++i)
        {
            if(a[i]==2)
                cnt++;
        }
        printf("%d\n",cnt);
    }
}