A

#include<bits/stdc++.h>
#define ll long long
#define endl "\n"
using namespace std;
template<class T>
void printff(vector<T>& v) {
  for (auto k : v) cout << k << " ";
  cout << endl;
}
void SOLVE() {
  int n; cin >> n;
  vector<ll> a(n);
  for(auto & val : a) cin >> val;
  ll sum = 0;
  ll mx = 0;
  for(int i = 0; i < n; i++){
    sum += a[i];
    mx = max(mx, sum);
    if(sum < 0) sum = 0;
    cout << mx << " ";
  }
  cout << endl;
}
int main() {
  ios_base::sync_with_stdio(false); 
  cin.tie(NULL); 
  cout.tie(NULL);
  int tc = 1; cin >> tc;
  while(tc--) SOLVE();
  return 0;
}