#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
long long a[N];
void solve() {
  long long a, b, c;
  cin >> a >> b >> c;
  long long sum = a + b + c;
  if (sum % 2 == 1) {
    cout << "Impossible" << endl;
    return;
  }
  sum = sum / 2;
  long long x, y, z;
  x = sum - c;
  y = sum - a;
  z = sum - b;
  if (x >= 0 && y >= 0 && z >= 0)
    cout << x << " " << y << " " << z << endl;
  else
    cout << "Impossible" << endl;
  return;
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  long long t = 1;
  while (t--) solve();
  return 0;
}
