#include<bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
typedef long long LL;
int N;
int main(){
    cin>>N;
    REP(i,N+1){
        if(i==0)continue;
        for(int j=i;j<N+1;j++){
            int a=N-i-j;
            if(a>=j){
               cout<<i<<" "<<j<<" "<<a<<endl;
            }
        }
    }
    return(0);
}