#include <bits/stdc++.h>
using namespace std;
int a, b, c, sums;
int x, y, z;
int main() {
  while (cin >> a >> b >> c) {
    sums = a + b + c;
    if (sums % 2 != 0 || sums < 2 * a || sums < 2 * b || sums < 2 * c) {
      cout << "Impossible" << endl;
      continue;
    }
    sums /= 2;
    x = sums - c;
    y = sums - a;
    z = sums - b;
    cout << x << " " << y << " " << z << endl;
  }
  return 0;
}
