#include<bits/stdc++.h>
using namespace std;
int n,i,j; 
int main(){
    cin>>n;
    for(i=1;i<=n;i++){
        for(j=1;j<=n-i;j++){
            cout<<" ";
        }
        cout<<"*";
        for(j=1;j<=n+(i-1)*2-2;j++){
            if(i==1) cout<<"*";
            else cout<<" ";
        }
        cout<<"*";
        cout<<endl;
    }
    for(i=n-1;i>=1;i--){
        for(j=1;j<=n-i;j++){
            cout<<" ";
        }
        cout<<"*";
        for(j=1;j<=n+(i-1)*2-2;j++){
            if(i==1) cout<<"*";
            else cout<<" ";
        }
        cout<<"*";
        cout<<endl;
    }
    return 0;
}
/**************************************************************
	Problem: 1011
	User: chenmingyu
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/