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#5946

Number triangle 2 1s 32MB

Problems

Given the height 𝑛 of a triangle, write a program that prints the triangle in the specified numeric pattern.


Input

The triangle height 𝑛 is given.

𝑛 is an odd integer not exceeding 50.


Output

Print the triangle with height n. Numbers in each row are separated by a space.

If the input value is outside the specified range, output INPUT ERROR!.


Example #1

3
0 0 0 0 0
  1 1 1
    2

Example #2

7
0 0 0 0 0 0 0 0 0 0 0 0 0 
  1 1 1 1 1 1 1 1 1 1 1 
    2 2 2 2 2 2 2 2 2 
      3 3 3 3 3 3 3 
        4 4 4 4 4 
          5 5 5 
            6


Source

JUNGOL

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