#include<cstdio>
#include<string>

using namespace std;

#ifdef HOME
const string inputFile = "input.txt";
const string outputFile = "output.txt";
#else
const string problemName = "damesah";
const string inputFile = problemName + ".in";
const string outputFile = problemName + ".out";
#endif

int N, nrsol;
int S[27];
bool A[27], B[27], L[27];

void ok() {
    int i;

    nrsol++;

    if(nrsol == 1)
        for(i = 1; i <= N; i++)
            printf("%d ", S[i]);
}

void back(const int &top) {
    int i;

    if(top > N) {
        ok();
        return;
    }

    for(i = 1; i <= N; ++i) {
        if(A[top + i]) continue;
        if(B[top - i + N]) continue;
        if(L[i]) continue;

        S[top] = i;

        A[top + i] = 1;
        B[top - i + N] = 1;
        L[i] = 1;

        back(top + 1);

        A[top + i] = 0;
        B[top - i + N] = 0;
        L[i] = 0;
    }
}

int main() {
    freopen(inputFile.c_str(), "r", stdin);
    freopen(outputFile.c_str(), "w", stdout);

    scanf("%d", &N);

    back(1);

    printf("\n%d\n", nrsol);

    return 0;
}