#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,i,j;
    cin>>n;
    for(i=0;i<n-1;i++){
        cout<<" ";
    }
    cout<<"*"<<endl;
    for(i=1;i<n-1;i++){
        for(j=0;j<n-i-1;j++){
            cout<<" ";
        }
        cout<<"*";
        for(j=0;j<i*2-1;j++){
            cout<<" ";
        }
        cout<<"*"<<endl;
    }
    for(i=0;i<n*2-1;i++){
        cout<<"*";
    }
    return 0;
}
/**************************************************************
	Problem: 1225
	User: lijinkai
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/