344B - Simple Molecules - CodeForces Solution

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

void solve() {
  int a, b, c;

  cin >> a >> b >> c;

  int fx = -1, y, z;
  for (int x = 0; x <= a; ++x) {
    z = a - x;
    y =  b - x;
    if (z >= 0 && y >= 0 && c - z == y && z + y == c && x + y == b && z + x == a) {
      fx = x;
      break;
    }
  }

  if (fx == -1) {
    cout << "Impossible";
    return;
  }

  cout << fx << ' ' << y << ' ' << z;
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);

  int t = 1;
  // cin >> t;
  while (t--) solve();

  return 0;
}