#include<stdio.h> #include<cmath> #include<cstdlib> #include<algorithm> #include<iostream> using namespace std; typedef long long ll; int main(){ int t,n,i,a[10000]; scanf("%d",&t); while(t--){ int cnt=0; scanf("%d", &n); for(i=0;i<n;i++){ scanf("%d",&a[i]); if(a[i]==2) cnt++; } printf("%d\n",cnt); } return 0; } |
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