#include <bits/stdc++.h>
using namespace std;
int a, b, c, x, y, z;
bool flag;
int main() {
  ios::sync_with_stdio(false);
  cin >> a >> b >> c;
  if ((a + b - c) % 2) {
    puts("Impossible\n");
    return 0;
  } else {
    x = (a + b - c) / 2;
    y = a - x, z = b - x;
    if (x < 0 || y < 0 || z < 0) {
      puts("Impossible\n");
      return 0;
    }
  }
  printf("%d %d %d\n", x, z, y);
  return 0;
}
