Introduction to Python

Roulette

We would like to know what is the color of a specific number on the roulette. The colors follow this pattern:

  • 0: green

  • Numbers 1 - 10: odds are red, evens are black

  • Numbers 11 - 18: evens are red, odds are black

  • Numbers 19 - 28: odds are red, evens are black

  • Numbers 29 - 36: evens are red, odds are black

european-roulette-wheel-top-view-vector-20671345.jpg

The input contains a single number. The program should print red if the color of that number on the roulette is red, black if the color is black, or green if the color is green.

Input

Output

0

green

7

red

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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