View Code of Problem 3857

#include<iostream>

using namespace std;

int main(){
	int t;
	cin>>t;
	while(t--){
		int n;
		cin>>n;
		int sum=0;
		for(int i=0;i<n;++i){
			int num;
			cin>>num;
			
			if(num==2){
				sum++;
			}
		}
		cout<<sum<<endl;
	}
	return 0;
} 

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