#include <stdio.h>

int main() {
    long long int b ;
    int a,i,input;
   scanf("%d",&i);
   while(scanf("%d",&input) == 1)
   {
    b = 0;
    while(scanf("%d",&a))
    {
       b +=a;
        input--;
        if(input == 0)
        break;
    }
    printf("%lld\n",b);
   }
    return 0;
}