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