#include<bits/stdc++.h>
using namespace    std;

void seris(int s, int e)
{
    if(s>e)return;
    printf("%d ", s);
    seris(s+1, e);
    printf("\n");
    seris(1, e-1);
}

int main()
{
   #ifndef Brain_FUCK
        freopen("input.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    
    int n;
    cin>>n;
    seris(1,n);  
    return 0;
}