#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,y;
    cin>>x>>y;
    if(x==0||y==0)
    {
        cout<<"black";
        return 0;
    }
    if((x>0&&y>0)||(x<0&&y<0))
    {
        if(x%2==0)
        {
            if(y%2==0) cout<<"black";
            else cout<<"white";
        }
        else
        {
            if(y%2!=0) cout<<"black";
            else cout<<"white";
        }
    }
    if((x>0&&y<0)||(x<0&&y>0))
    {
        if(x%2==0)
        {
            if(y%2!=0) cout<<"black";
            else cout<<"white";
        }
        else
        {
            if(y%2==0) cout<<"black";
            else cout<<"white";
        }
    }
}