#include <bits/stdc++.h>
using namespace std;
bool ss(int n){
	int i;
	if(n==2)
		return 1;
	for(i=2;i<n;i++){
		if(n%i==0){
			return 0;
		}
	}
	return 1;
}
int main(){
	int i,j,n;
	cin>>n;
	for(i=2;i<n/3;i++){
		if(ss(i)){
			for(j=2;j<n/3;j++){
				if(ss(j)&&ss(n-i-j)){
					cout<<i<<" "<<j<<" "<<n-i-j;
					return 0;
				}			
			}
		}		
	}
	return 0;
	}

/**************************************************************
	Problem: 1878
	User: fzy001
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/