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