#include<iostream>
#include<cstdio>
#include<vector>
using namespace std;

int main()
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        int n;
        scanf("%d",&n);
        vector<int> a(n);
        long long sum = 0;
        for(int i=0;i<n;i++)
        {
            scanf("%d",&a[i]);
            sum += a[i];
        }
        printf("%lld\n",sum);
    }
 
    return 0;
}