#include<bits/stdc++.h> using namespace std; int n,a[20][20]; int main(){ cin>>n; for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ a[i][j]=1; } } for(int i=1;i<=n/2+1;i++){ for(int j=1;j<=n/2+1;j++){ a[i][n-2-i]=0; a[i][n/2+i]=0; a[n+1-i][n-2-i]=0; a[n+1-i][n/2+i]=0; } } a[n/2+1][n/2+1]=0; for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ cout<<setw(3)<<a[i][j]; } cout<<endl; } return 0; } /************************************************************** Problem: 1327 User: wuzihang Language: C++ Result: Wrong Answer ****************************************************************/