View Code of Problem 3857

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