#include <bits/stdc++.h>
using namespace std;
const int INF = (int)INT_MAX;
const long long INF64 = (long long)1e18;
const long double eps = 1e-9;
const long double pi = 3.14159265358979323846;
double PHI = 1.6180339;
template <class T1>
void deb(T1 e) {
  cout << "-->" << e << "\n";
}
template <class T1, class T2>
void deb(T1 e1, T2 e2) {
  cout << "-->" << e1 << " " << e2 << "\n";
}
template <class T1, class T2, class T3>
void deb(T1 e1, T2 e2, T3 e3) {
  cout << "-->" << e1 << " " << e2 << " " << e3 << "\n";
}
template <class T1, class T2, class T3, class T4>
void deb(T1 e1, T2 e2, T3 e3, T4 e4) {
  cout << "-->" << e1 << " " << e2 << " " << e3 << " " << e4 << "\n";
}
template <class c>
struct rge {
  c b, e;
};
template <class c>
rge<c> range(c i, c j) {
  return rge<c>{i, j};
}
template <class c>
auto dud(c* x) -> decltype(cerr << *x, 0);
template <class c>
char dud(...);
struct debug {
  template <class c>
  debug& operator<<(const c&) {
    return *this;
  }
};
void read(vector<int>& v) {
  int N = (int)v.size();
  for (int i = 0; i < N; i++) {
    cin >> v[i];
  }
}
void Answer() {
  int n;
  cin >> n;
  vector<int> v(n);
  read(v);
  for (int i = 0; i < n; i++) {
    if (i & 1)
      cout << abs(v[i]) << ' ';
    else
      cout << -(abs(v[i])) << ' ';
  }
  cout << "\n";
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int t = 1;
  cin >> t;
  while (t--) {
    Answer();
  }
  return 0;
}
