#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n-i;j++)cout<<" ";
        for(int m=1;m<=2*i-1;m++)cout<<"*";
        cout<<"\n";
    }
    for(int i=n-1;i>=1;i--){
        for(int j=1;j<=n-i;j++)cout<<" ";
        for(int m=1;m<=2*i-1;m++)cout<<"*";
        cout<<"\n";
           }
    return 0;
}