#include <stdio.h>

int main()
{
 int t=0;
 scanf("%d",&t);
   while(t--)
   {
    int n;
    scanf("%d",&n);
    long sum=0;
    for(int i=0;i<n;i++)
    {
        int num;
        scanf("%d",&num);
        sum+=num;
    }
    printf("%ld\n",sum);
   }
   return 0;
}