#include<bits/stdc++.h> using namespace std; // 1 2 3 4 5 6 7 //1 @ //2 @ @ //3 @ @ //4@ @ @ //5 @ @ //6 @ @ //7 @ //行 列 //4 7 (n-1)*2-1 //5 6 //6 5 //7 4 int a[100][100],n,i,j; int main(){ cin>>n; for(i=1;i<=n;i++){ for(j=1;j<=n;j++){ a[i][j]=1; } } a[(n+1)/2][(n+1)/2]=0; for(i=1;i<=n/2+1;i++){ for(j=1;j<=n/2+1;j++){ if(i+j==(n+1)/2+1) a[i][j]=0; } } for(i=n/2+1;i<=n;i++){ for(j=1;j<=n/2+1;j++){ if(i-j==(n-1)/2) a[i][j]=0; } } for(i=1;i<=n/2+1;i++){ for(j=n/2+1;j<=n;j++){ if(j-i==(n-1)/2) a[i][j]=0; } } for(i=n/2+1;i<=n;i++){ for(j=n/2+1;j<=n;j++){ if(j+i==n+(n/2+1)) a[i][j]=0; } } for(i=1;i<=n;i++){ for(j=1;j<=n;j++){ cout<<setw(3)<<a[i][j]; } cout<<endl; } return 0; } /************************************************************** Problem: 1327 User: linyuhang Language: C++ Result: Accepted Time:10 ms Memory:2116 kb ****************************************************************/