#include <iostream>
using namespace std;
int n,i,j,k;
int main(){
    cin>>n;
    for(i=2;i<n;i++){
        for(j=2;j<n-i;j++){
            k=n-i-j;
            if(i+j+k==n&&i%2==0&&j%2==0&&k%2==0&&i<=j&&j<=k){
                cout<<i<<" "<<j<<" "<<k<<endl;
            }
        }
    }
    return 0;
}
/**************************************************************
	Problem: 1342
	User: liyunshuo
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/