#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,i,j,e,k;
    cin>>n;
    j=n-2;
    for(i=1;i<=n-1;i++){
        cout<<" ";
    }
    for(i=1;i<=n;i++){
        cout<<"*";
    }
    printf("\n"); 
    k=n;
    for(i=1;i<=n-1;i++){
        for(e=1;e<=j;e++){
        cout<<" ";
        }
        j--;
        cout<<"*";
        for(e=1;e<=k;e++){
        cout<<" ";
        }
        k+=2;
        cout<<"*";
        printf("\n"); 
    }
    j=1; 
    k=n+(n-2)*2;
    for(i=1;i<=n-2;i++){
        for(e=1;e<=j;e++){
        cout<<" ";
        }
        j++;
        cout<<"*";
        for(e=1;e<=k;e++){
        cout<<" ";
        }
        k-=2;
        cout<<"*";
        printf("\n"); 
    } 
    for(i=1;i<=n-1;i++){
        cout<<" ";
    }
    for(i=1;i<=n;i++){
        cout<<"*";
    }
return 0;
/**************************************************************
	Problem: 1011
	User: zzz
	Language: C++
	Result: Compile Error
****************************************************************/