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