View Code of Problem 3857

#include<stdio.h>
int main()
{
	int t,n,i,j;
	scanf("%d",&t);
	for(i=0;i<t;i++)
	{
		scanf("%d",&n);
		int a[n],s=0;
		for(j=1;j<=n;j++)
			scanf("%d",&a[j]);
		for(j=1;j<=n;j++)
		{
			if(a[j]==2)
			s++;
		}
		printf("%d\n",s);
	}
	return 0;
 }