#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  scanf("%d%d%d", &a, &b, &c);
  int k1, k2, k3;
  if ((b + c - a) % 2)
    printf("Impossible\n");
  else {
    k1 = (a + b - c) / 2;
    k2 = (b + c - a) / 2;
    k3 = (a + c - b) / 2;
    if (k1 < 0 || k2 < 0 || k3 < 0)
      printf("Impossible\n");
    else
      printf("%d %d %d\n", k1, k2, k3);
  }
  return 0;
}
