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