View Code of Problem 3857

#include <iostream>
#include <cstdio>
using namespace std;
int main(){
    int t,a[999],sum;
    cin>>t;
    while(t--){
        sum=0;
        int n;
        cin>>n;
        for(int i=0;i<n;i++){
            cin>>a[i];
            if(a[i]==2)
                sum++;
        }
        cout<<sum<<endl;
    }
    return 0;
}