View Code of Problem 3857

#include<cstdio>
#include<cstring>
#include<cmath>
#include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int t;
	int a[1000]; 
	cin>>t;
	while(t--){
		int n;
		cin>>n;
		int sum=0;
		for(int i=0;i<n;i++){
			cin>>a[i];
			if(a[i]==2)
			sum++;
		}
		cout<<sum<<endl;
	}
}