View Code of Problem 3857

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