#include <bits/stdc++.h>

using namespace std;

ifstream fin("permutari.in");
ofstream fout("permutari.out");
int n;
bool flag;

vector <int> perm;

void backtracking(int k)
{
    if (k == n)
    {
        for (auto i:perm)
            fout << i << " ";
        fout << "\n";
    }
    else
    {
        for (int i = 1; i <= n; i++)
            {
                flag = true;
                for (int j = 1; j <= k; j++)
                    if (perm[j] == i)
                    {
                        flag = false;
                        break;
                    }
                if (flag)
                {
                    perm[k+1] = i;
                    backtracking(k+1);
                }
            }
    }
}



int main()
{
    fin >> n;
    perm.resize(n+1);
    backtracking(0);
    return 0;
}