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