#include <bits/stdc++.h>
using namespace std;
long long int mod = 1000000007;
long long int powmod(long long int a, long long int b) {
  long long int res = 1;
  a %= mod;
  assert(b >= 0);
  for (; b; b >>= 1) {
    if (b & 1) res = res * a % mod;
    a = a * a % mod;
  }
  return res;
}
long long int gcd(long long int a, long long int b) {
  return b ? gcd(b, a % b) : a;
};
int main() {
  int t = 1;
  while (t--) {
    int a, b, c;
    cin >> a >> b >> c;
    string ans = "possible";
    if (a + b >= c && b + c >= a && c + a >= b && (a + b + c) % 2 == 0)
      ans = "possible";
    else {
      ans = "Impossible";
    }
    if (ans == "possible") {
      cout << (a + b - c) / 2 << " " << (b + c - a) / 2 << " "
           << (c + a - b) / 2 << endl;
    } else {
      cout << ans << endl;
    }
  }
  return 0;
}
