#include<bits/stdc++.h>
#define REP(i, n) for (int i = 0; i < (int)(n); i++)
using ll = long long;
using namespace std;
template< int sz >
struct FastInput {
  char buf[sz + 1];
  char* o;

  FastInput() { init(); }

  void init() {
    o = buf;
    buf[fread(buf, sizeof(char), sizeof(char) * sz, stdin)] = '\0';
  }

  int64_t read() {
    int64_t ret = 0, sign = 1;
    while(*o && *o <= 32) ++o;
    if(*o == '-') sign *= -1, ++o;
    while(*o >= '0' && *o <= '9') {
      ret *= 10;
      ret += *o++ - '0';
    }
    return ret * sign;
  }
};
int main() {
  int T;
  scanf("%d", &T);
  string c;
  REP(_, T) {
    int N;
    scanf("%d", &N);

    int ans = 0;
    REP(i, N) {
      int x;
      cin >> x;
      ans += x;
    }
    cout << ans;
  }
  cout << endl;
}