Find Color

40A1300· pupil2s256 MB⌨ stdin/stdout

#constructive algorithms #geometry #implementation #math

Examples

Sample 1of 3

Input

-2 1

Output

white

Sample 2of 3

Input

2 1

Output

black

Sample 3of 3

Input

4 3

Output

black

40A.cpp

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Ln 11·137 BGNU C++20 (64)