import java.util.*;
class A_Color {
public static void main
(String[] args
) { Scanner s
= new Scanner
(System.
in); double x = s.nextInt(), y = s.nextInt();
double d
= Math.
sqrt(x
* x
+ y
* y
) % 2; if (d == (int) d) {
} else if (Math.
signum(x
* y
) < 0) { System.
out.
println(d
< 1 ? "white" : "black"); } else {
System.
out.
println(d
> 1 ? "white" : "black"); }
}
}
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