using System;

class Program {
    public static void Main (string[] args) 
    {
      Console.WriteLine("Menu: n 1. Square n 2. Rectangle n 3. Triangle n 4. Rhombus n 5. Christmas Tree");
      int a = int.Parse(Console.ReadLine());
      
      switch(a)
      {
        case 1:
        Console.Write("a = ");
        int l = int.Parse(Console.ReadLine());

        for(int i = 1; i <= l;i++)
      {
        for(int j = 1; j <= l; j++)
        {
          Console.Write("* ");
        }
        Console.WriteLine("");
      }
      break;

        case 2:
        Console.WriteLine("a = ");
        int x = int.Parse(Console.ReadLine());
        Console.WriteLine("b = ");
        int y = int.Parse(Console.ReadLine());
        for(int i = 0; i<=3;i++)
        {
          for(int j = 0; j<=5;j++)
          {
            Console.Write("* ");
          }
          Console.WriteLine("");
        }
        break;
          case 3:
          for (int i = 1; i <= 5; i++)  
         {  
            for (int j = 1; j <= 5-i; j++)  
            {  
               Console.Write(" ");  
            }  
            for (int k = 1; k <= i+i-1; k++)  
            {  
               Console.Write("*");  
            }  
            Console.WriteLine("");  
         }  
        break;
          case 4:
         for (int i = -1; i >= -4; i--)  
         {  
            for (int j = -1; j >= -4-i; j--)  
            {  
               Console.Write(" ");  
            }  
            for (int k = 4; k >= 1; k-=1)  
            {  
               Console.Write("* ");  
            }  
            Console.WriteLine("");  
         }
          break;
          case 5:
          for (int i = 1; i <= 5; i++)  
         {  
            for (int j = 1; j <= 7-i; j++)  
            {  
               Console.Write(" ");  
            }  
            for (int k = 1; k <= i+i-1; k++)  
            {  
               Console.Write("*");  
            }  
            Console.WriteLine("");  
         }
         for (int i = 3; i <= 7; i++)  
         {  
            for (int j = 1; j <= 8-i; j++)  
            {  
               Console.Write(" ");  
            }  
            for (int k = 3; k <= i+i-1; k++)  
            {  
               Console.Write("*");  
            }  
            Console.WriteLine("");  
         }
         for (int i = 5; i <= 9; i++)  
         {  
            for (int j = 1; j <= 9-i; j++)  
            {  
               Console.Write(" ");  
            }  
            for (int k = 5; k <= i+i-1; k++)  
            {  
               Console.Write("*");  
            }  
            Console.WriteLine("");  
         }
         for(int i = 1; i <= 4; i++)
        {
          for(int j = 3; j <= 6; j++)
          {
            Console.Write(" ");
          }
          for(int k = 0; k <= 3; k++)
          {
          Console.Write("*");
          }
          Console.WriteLine("");
        }  
          break;
      }

      
    }
}