#include<bits/stdc++.h>
using namespace std;
int main()
{
  int i,j,n;
  cin>>n;
  int x=n-1;
  for(i=0;i<n;i++){
  if(i==0||i==n-1)
  for(j=0;j<n;j++) cout<<"*";
  else{
  for(j=0;j<x;j++) cout<<" ";
  cout<<"*";
  }
  cout<<endl;
  x--; 
  }
}
/**************************************************************
	Problem: 1493
	User: chenjiahui
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/