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