#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  int ab, bc, ca;
  if ((b + a - c) % 2 != 0 || (c + a - b) % 2 != 0 || (b + c - a) % 2 != 0 ||
      a + b < c || a + c < b || b + c < a)
    cout << "Impossible";
  else {
    ab = (b + a - c) / 2;
    cout << ab << '\t';
    bc = (b + c - a) / 2;
    cout << bc << '\t';
    ca = (c + a - b) / 2;
    cout << ca << '\t';
  }
}
