#include <iostream>
int main() 
{
    int x, y;
    scanf("%d %d",&x,&y);
    if(x<1||x>8||y<1||y>8){
        printf("invalid input");
    }
    else
    {
        if(x+y)%2==0
        printf("black");
        else
        printf("white");
    }
    return 0;
}