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