#include <bits/stdc++.h>
using namespace std;
long long power(long long base, long long exp) {
  long long res = 1;
  while (exp > 0) {
    if (exp % 2 == 1) res = (res * base);
    base = (base * base);
    exp /= 2;
  }
  return res;
}
int main() {
  long long a, b, c;
  cin >> a >> b >> c;
  if ((a - b + c) < 0 || (a + b - c) < 0 || (-a + b + c) < 0) {
    cout << "Impossible";
  } else if ((a - b + c) % 2 == 1 || (a + b - c) % 2 == 1 ||
             (-a + b + c) % 2 == 1) {
    cout << "Impossible";
  } else {
    if (((a - b + c) == 0 && (a + b - c) == 0) ||
        ((a + b - c) == 0 && (-a + b + c) == 0) ||
        ((a - b + c) == 0 && (-a + b + c) == 0)) {
      cout << "Impossible";
    } else {
      cout << (a + b - c) / 2 << " " << (-a + b + c) / 2 << " "
           << (a - b + c) / 2 << "\n";
    }
  }
  return 0;
}
