NYOJ素数求和

#include<stdio.h>int main(){int T;scanf("%d",&T);while(T--){int n;scanf("%d",&n);int a[50],i,j,sum=0;for(i=0;i<n;i++){scanf("%d",&a[i]);for(j=2;j<=a[i];j++){if(j==a[i]){sum=sum+a[i];                    break;}if(a[i]%j==0){break;}}}printf("%d\n",sum);}return 0;}