#include <iostream>
#include <fstream>
using namespace std;
ifstream f ("permutari.in");
ofstream g ("permutari.out");
int *x, nrsol = 0;
int valid (int x[], int k)
{
    for(int i = 1; i < k; i++)
        if(x[k] == x[i] )
            return 0;
    return 1;
}

void afis (int x[], int n)
{
    nrsol++;
    for (int i = 1; i <= n; i++)
        g << x[i] << ' ';
    g << '\n';
}

void backt (int n)
{
    int k = 1;
    x[1] = 0;
    while (k > 0)
        if (x[k] < n)
        {
            x[k]++;
            //ap[x[k]]++;
            if (valid (x, k))
            {
                if (k == n)
                {
                    afis (x, n);
                    //ap[x[k]]--;
                    k--; //se poate forta revenirea
                }
                else
                    x[++k] = 0;
            }
        }
        else
            k--;
}

int main()
{
    int N;
    f >> N;
    x = new int [N + 1];
    backt (N);
    return 0;
}