#include<bits/stdc++.h> using namespace std; int n; int Sum,a[105]; bool b[105],c[105],d[105]; void print() { Sum++; if(Sum<=3) for(int k=1;k<=b;k++) { cout<<a[k]; if(k!=n)cout<<" "; cout<<"\n"; Count++; } void dfs(int i) { if(i>b){ print(); return; } else for(int j=1;j<=n;j++) if((b[j]==0)&&(c[i+j]==0)&&(d[i-j+n]==0)){ b[j]=1;c[i+j]=1;d[i-j+n]=1; a[i]=j; dfs(i+1); ; } } int main() { cin>>n; dfs(1); cout<<Sum; }