#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  int sum = (a + b + c) / 2;
  if ((a + b + c) % 2 == 1 || sum - c < 0 || sum - b < 0 || sum - a < 0)
    cout << "Impossible";
  else
    cout << sum - c << " " << sum - a << " " << sum - b << " ";
}
