#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, flag = 1, m1, m2, m3;
  scanf("%d%d%d", &a, &b, &c);
  int x = (a + b + c);
  if (x % 2 == 1)
    flag = 0;
  else {
    x /= 2;
    m1 = x - a;
    m2 = x - b;
    m3 = x - c;
    if (m1 < 0 || m2 < 0 || m3 < 0)
      flag = 0;
    else if (m1 == 0 && m2 == 0)
      flag = 0;
    else if (m2 == 0 && m3 == 0)
      flag = 0;
    else if (m1 == 0 && m3 == 0)
      flag = 0;
  }
  if (flag == 0)
    printf("Impossible\n");
  else
    printf("%d %d %d\n", m3, m1, m2);
  return 0;
}
