#include<stdio.h>
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{
            print("white");
        }
    }
    return 0;
}