#include <bits/stdc++.h>
using namespace std;
ifstream in("input.txt");
ofstream out("output.txt");
int main() {
  unsigned long long n, k;
  cin >> n;
  if (n == 1) {
    cout << -1;
    return 0;
  } else {
    cout << n << " " << n + 1 << " " << n * n + n;
    return 0;
  }
}
