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