#include <bits/stdc++.h>
using namespace std;
int main() {
  int a[3];
  int t[3];
  int v[3];
  int f[3];
  int x, y, z;
  int flag = 0;
  cin >> a[0] >> a[1] >> a[2];
  int sum = a[0] + a[1] + a[2];
  t[0] = a[0];
  t[1] = a[1];
  t[2] = a[2];
  sort(t, t + 3);
  if (sum % 2 != 0 || t[0] + t[1] < t[2]) flag = 1;
  x = a[0] + a[1] - a[2];
  y = a[1] + a[2] - a[0];
  z = a[0] + a[2] - a[1];
  if (flag)
    cout << "Impossible" << endl;
  else
    cout << x / 2 << " " << y / 2 << " " << z / 2 << endl;
}
