View Code of Problem 3857

#include <stdio.h>

int main() {
	int T,a,b,sum;
	scanf("%d",&T);
	while(T--) {
		sum=0;
		scanf("%d", &a);
		while(a--) {
			scanf("%d",&b);
			if(b==2) {
				sum++;
			}
		}
		printf("%d\n",sum);
	}
}