#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("Yes");}else{puts("No");}
#define MAX_N 200005

int main() {
    int n; cin >> n;
    srep(a,1,n+1){
        srep(b,a,n+1){
            int c = n - (a + b);
            if(c < b) continue;
            cout << a << ' ' << b << ' ' << c << endl;
        }
    }
    return 0;
}