#include<bits/stdc++.h>
using namespace std;
int main(){
    int i,j,n;
    cin>>n;
    for(i=1;i<=n-1;i++){
        cout<<" ";
    }
    cout<<"*"<<endl;
    for(i=2;i<=n-1;i++){
        for(j=1;j<=n-i;j++){
            cout<<" ";
        }
        cout<<"*";
        for(j=1;j<=i*2-3;j++){
            cout<<" ";
        }
        cout<<"*"<<endl;
    } 
    for(i=1;i<=n*2-1;i++){
        cout<<"*";
    }
}
/**************************************************************
	Problem: 1225
	User: chenjiahui
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/