#include <bits/stdc++.h>//setw using namespace std; int main(){ int n,i,j=0,a[100][100]={{0}}; cin>>n; for(i=n/2;i>=0;i--){ a[i][j]=1; j++; } j=n/2; for(i=n-1;i>=0;i--){ a[i][j]=1; j++; } j=n/2; for(i=0;i<n;i++){ a[i][j]=1; j++; } j=0; for(i=n/2;i<n;i++){ a[i][j]=1; j++; } a[n/2][n/2]=1; for(i=0;i<n;i++){ for(j=0;j<n;j++){ if(a[i][j]==0) cout<<setw(3)<<"1"; else cout<<setw(3)<<"0"; } cout<<endl; } return 0; } /************************************************************** Problem: 1327 User: fzy001 Language: C++ Result: Accepted Time:9 ms Memory:2072 kb ****************************************************************/