#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int i=n/2+1;i>=2;i--){
        for(int j=1;j<=n/2+1-i;j++)cout<<" ";
        for(int j=1;j<=2*i-1;j++)cout<<"*";
            cout<<endl;
        }
         
    for(int i=1;i<=n/2+1;i++){
        for(int j=1;j<=n/2+1-i;j++)cout<<" ";
        for(int j=1;j<=2*i-1;j++)cout<<"*";
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1073
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/