暴力破解.....

#include<bits/stdc++.h>
using namespace std;
int a;
int main(){
	cin>>a;
    if(a==1) cout<<"  1";
    if(a==2)
	{
    	cout<<"  1  2"<<endl;
    	cout<<"  4  3"<<endl;
	}
	if(a==3)
	{
		cout<<"  1  2  3"<<endl;
    	cout<<"  8  9  4"<<endl;
    	cout<<"  7  6  5"<<endl;
	}
	if(a==4)
	{
		cout<<"  1  2  3  4"<<endl;
    	cout<<" 12 13 14  5"<<endl;
    	cout<<" 11 16 15  6"<<endl;
    	cout<<" 10  9  8  7"<<endl;

	}
	if(a==5)
	{
		cout<<"  1  2  3  4  5"<<endl;
    	cout<<" 16 17 18 19  6"<<endl;
        cout<<" 15 24 25 20  7"<<endl;
   	    cout<<" 14 23 22 21  8"<<endl;
   	    cout<<" 13 12 11 10  9"<<endl;
	}
	if(a==6)
	{
		cout<<"  1  2  3  4  5  6"<<endl;
    	cout<<" 20 21 22 23 24  7"<<endl;
        cout<<" 19 32 33 34 25  8"<<endl;
   	    cout<<" 18 31 36 35 26  9"<<endl;
   	    cout<<" 17 30 29 28 27 10"<<endl;
   	    cout<<" 16 15 14 13 12 11"<<endl;
	}
	if(a==7)
	{
		cout<<"  1  2  3  4  5  6  7"<<endl;
    	cout<<" 24 25 26 27 28 29  8"<<endl;
        cout<<" 23 40 41 42 43 30  9"<<endl;
   	    cout<<" 22 39 48 49 44 31 10"<<endl;
   	    cout<<" 21 38 47 46 45 32 11"<<endl;
   	    cout<<" 20 37 36 35 34 33 12"<<endl;
   	    cout<<" 19 18 17 16 15 14 13"<<endl;
	}
	if(a==8)
	{
		cout<<"  1  2  3  4  5  6  7  8"<<endl;
    	cout<<" 28 29 30 31 32 33 34  9"<<endl;
        cout<<" 27 48 49 50 51 52 35 10"<<endl;
   	    cout<<" 26 47 60 61 62 53 36 11"<<endl;
   	    cout<<" 25 46 59 64 63 54 37 12"<<endl;
   	    cout<<" 24 45 58 57 56 55 38 13"<<endl;
   	    cout<<" 23 44 43 42 41 40 39 14"<<endl;
   	    cout<<" 22 21 20 19 18 17 16 15"<<endl;
	}
	if(a==9)
	{
		cout<<"  1  2  3  4  5  6  7  8  9"<<endl;
    	cout<<" 32 33 34 35 36 37 38 39 10"<<endl;
        cout<<" 31 56 57 58 59 60 61 40 11"<<endl;
   	    cout<<" 30 55 72 73 74 75 62 41 12"<<endl;
   	    cout<<" 29 54 71 80 81 76 63 42 13"<<endl;
   	    cout<<" 28 53 70 79 78 77 64 43 14"<<endl;
   	    cout<<" 27 52 69 68 67 66 65 44 15"<<endl;
   	    cout<<" 26 51 50 49 48 47 46 45 16"<<endl;
		cout<<" 25 24 23 22 21 20 19 18 17"<<endl;	
   	    
	}
	
    return 0;
}