#include <bits/stdc++.h>
using namespace std;
int main() {
  int t;
  cin >> t;
  while (t--) {
    int n;
    cin >> n;
    vector<long long int> v(n);
    for (long long int &x : v) cin >> x;
    for (int i = 0; i < n; i++) {
      if (i % 2)
        v[i] = -abs(v[i]);
      else
        v[i] = abs(v[i]);
      cout << v[i] << " ";
    }
    cout << endl;
  }
  return 0;
}
