#include <bits/stdc++.h>
 
using namespace std;
 
ifstream in("damesah.in");
ofstream out("damesah.out");

const int Nmax = 15;

int n, sol[Nmax], ans;

bool valid(int k) {
    for(int i = 1; i < k; ++i) {
        if(sol[i] == sol[k] || (abs(sol[k] - sol[i]) == abs(k - i))) {
            return false;
        }
    }

    return true;
}

void bkt(int k) {
    if(k == n + 1) {
        ans++;

        if(ans == 1) {
            for(int i = 1; i <= n; ++i) {
                out << sol[i] << " ";
            }
            out << "\n";
        }
    } else {
        for(int i = 1; i <= n; ++i) {
            sol[k] = i;

            if(valid(k)) {
                bkt(k + 1);
            }
        }
    }
}

int main() {
    ios::sync_with_stdio(false); in.tie(0); out.tie(0);
    
    in >> n;

    bkt(1);

    out << ans << "\n";

    in.close(); out.close();
 
    return 0;
}