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