#include <bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int y=1;y<n;y++)cout<<" ";
    for(int y=1;y<=n;y++)cout<<"*";
    cout<<"\n";
    for(int y=1;y<n-1;y++){
        for(int u=1;u<n-y;u++)cout<<" ";
        cout<<"*";
        for(int u=1;u<y;u++)cout<<" ";
        for(int u=1;u<=n;u++)cout<<" ";
        for(int u=1;u<y;u++)cout<<" ";
        cout<<"*\n";
    }
    for(int y=n-1;y>0;y--){
        for(int u=1;u<n-y;u++)cout<<" ";
        cout<<"*";
        for(int u=1;u<y;u++)cout<<" ";
        for(int u=1;u<=n;u++)cout<<" ";
        for(int u=1;u<y;u++)cout<<" ";
        cout<<"*\n";
    }
    for(int y=1;y<n;y++)cout<<" ";
    for(int y=1;y<=n;y++)cout<<"*";
    return 0;
}
/**************************************************************
	Problem: 1011
	User: fuyijun
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/