#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N=1e5+1e4,M=1e3+1e2;
const ll Maxn=0x3ffffff,Minm=-0x3ffffff;
ll n;
signed main()
{
    cin>>n;
    ll cnt=n/2;
    for(ll i=1;i<=n;i+=2)
    {
        for(ll j=1;j<=cnt;j++)cout<<" ";
        for(ll j=1;j<=i;j++)cout<<"*";
        cnt--;
        cout<<"\n";
    }
    cnt=0;
    for(ll i=n-2;i>=1;i-=2)
    {
        cnt++;
        for(ll j=1;j<=cnt;j++)cout<<" ";
        for(ll j=1;j<=i;j++)cout<<"*";
        cout<<"\n";
    }
}