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