#include <bits/stdc++.h>
using namespace std;
template <class T>
ostream& operator<<(ostream& cout, vector<T> V) {
  cout << "[ ";
  for (auto v : V) cout << v << ' ';
  return cout << ']';
}
template <class L, class R>
ostream& operator<<(ostream& cout, pair<L, R> P) {
  return cout << '(' << P.first << ',' << P.second << ')';
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long int t;
  cin >> t;
  while (t--) {
    long long int n;
    cin >> n;
    vector<long long int> a(n);
    for (long long int i = 0; i < (n); i++) cin >> a[i];
    for (long long int i = 0; i < (n); i++) {
      cout << abs(a[i]) * (i % 2 ? -1 : 1) << ' ';
    }
    cout << '\n';
  }
  cerr << "Time : " << 1000 * (long double)clock() / (long double)CLOCKS_PER_SEC
       << "ms\n";
  ;
}
