#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  unsigned int a, b, c;
  cin >> a >> b >> c;
  if (a + b < c || b + c < a || c + a < b || (a + b + c) % 2 != 0) {
    cout << "Impossible";
    return 0;
  }
  unsigned int x, y, z;
  cout << (a + b - c) / 2 << " " << (b + c - a) / 2 << " " << (a + c - b) / 2;
}
