#include <stdio.h>

int main(void)
{
    int s, n, tmp, sum;
    scanf("%d", &n);

        while(n-- && (scanf("%d", &s) == 1))
        {
            sum = 0;
            while(s--)
            {
                scanf("%d", &tmp);
                sum += tmp;
            }

        printf("%d\n", sum);
        }

    return 0;
}