#include <bits/stdc++.h>
using namespace std;
int main(void) {
  int a, b, c;
  while (scanf("%d%d%d", &a, &b, &c) == 3) {
    int zong;
    int flag = 1;
    int x1, x2, x3;
    zong = a + b + c;
    if (zong % 2 == 1)
      flag = 0;
    else {
      zong = zong / 2;
      x3 = zong - a;
      if (x3 < 0) flag = 0;
      x2 = zong - c;
      if (x2 < 0) flag = 0;
      x1 = zong - b;
      if (x1 < 0) flag = 0;
    }
    if (flag == 0)
      printf("Impossible\n");
    else
      printf("%d %d %d\n", x2, x3, x1);
  }
  return 0;
}
