#include <bits/stdc++.h>   using namespace std;   int main() {     long long int n;     cin >> n;     if ((n - 2) % 3 == 0) {       cout <<  1             <<                <<  2             <<     << n - 3 << endl;     } else {       cout <<  1             <<                <<  1             <<     << n - 2 << endl;     }   }   