#include <fstream>

using namespace std;

ofstream fout("permutari.out");

int n, p[10], len;
bool used[10];

void backtrack(int poz) {
    // Am terminat de generat permutarea curenta:
    if(poz == n + 1) {
        for(int i = 1; i <= n; i++) {
            fout << p[i] << " ";
        }
        fout << "\n";
        return;
    }

    // Ce numar pun in p[poz]?
    for(int val = 1; val <= n; val++) {
        // Pot pune valoarea val in p[poz]?
        if(!used[val]) { // O(1)
            p[poz] = val;
            used[val] = true;
            backtrack(poz + 1);
            used[val] = false; // undo
        }
    }
}

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