#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 
        printf("white");
    }