#include <fstream>
#include <vector>

using namespace std;

ofstream fout("permutari.out");

int n;
vector<int> permutare;
bool used[10];

void backtrack(int poz) {
    if(poz == n + 1) {
        for(int x : permutare) {
            fout << x << " ";
        }
        fout << "\n";
        return;
    }
    for(int i = 1; i <= n; i++) {
        if(!used[i]) {
            permutare.push_back(i);
            used[i] = true;
            backtrack(poz + 1);
            
            // undo
            permutare.pop_back();
            used[i] = false;
        }
    }
}

int main() {
    ifstream fin("permutari.in");
    fin >> n;
    backtrack(1);
    return 0;
}