#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;

int main(){
    int n;
    cin >> n;
    for(int a=1;a<=n;a++){
        for(int b=a;b<=n;b++){
            int c = n - b - a;
            if(c < b) continue;
            printf("%d %d %d\n",a,b,c);
        }
    }
    return 0;
}