#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int T;
  cin >> T;
  while (T--) {
    int n;
    cin >> n;
    vector<int> a(n);
    for (auto &i : a) cin >> i;
    for (int i = 0; i < n; i++) {
      if (i % 2)
        cout << abs(a[i]) << " ";
      else
        cout << -abs(a[i]) << " ";
    }
    cout << "\n";
  }
}
