#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 && b + c >= a && a + c >= b)
    printf("%d %d %d\n", (a + b - c) / 2, (b + c - a) / 2, (a + c - b) / 2);
  else
    printf("Impossible\n");
  return 0;
}
