//04. Printing Triangle----100ot100-----c+++ FUND

#include<iostream>
#include<string>
int n=0;

int printTriangle1( int  n)
{
    for (int row=1; row <= n; ++row)
    {
    for (int col=1; col <= row; ++col)
    {
        std::cout<< col << " " ;
    }
      std::cout<<std::endl;
    }
    return 0;
}
    int printTriangle2(int n)
{
    for (int row=n;row>=1;--row)
    {
    for (int col=1;col<row;++col)
    {
        std::cout<<col<< " "  ;
    }
     std::cout<<std::endl;
    }
    return 0;
}


int main()
{
  int n;
  std::cin>>n;
  printTriangle1( n);
  printTriangle2( n);
  return 0;

    }