#include<bits/stdc++.h> using namespace std; int a[200][200]; int n,c=1; int main() { cin>>n; for(int i=1;i<=n*2+1;i++){ for(int j=1;j<=n*2+1;j++){ if(i<=n&&j<=n){ if(i<=j){ a[i][j]=n+1-i; } else{ a[i][j]=n+1-j; } } else if(i>=n&&j>=n){ if(i<=j){ a[i][j]=j-n-1; a[i][n*2+1-j+1]=a[i][j]; a[n*2+1-i+1][j]=a[i][j]; } else{ a[i][j]=i-n-1; a[n*2+1-i+1][j]=a[i][j]; a[i][n*2+1-j+1]=a[i][j]; } } } } for(int i=1;i<=n*2+1;i++){ for(int j=1;j<=n*2+1;j++){ cout<<setw(2)<<a[i][j]; } cout<<endl; } return 0; } /************************************************************** Problem: 1209 User: xuanhua Language: C++ Result: Accepted Time:12 ms Memory:2228 kb ****************************************************************/