#include <iostream>
using namespace std;

void GetCell(short i, char ch)
{
    cout << (((i + ch) & 1) ? "White" : "Black");
}

int main()
{
    short i;
    char ch;
    cin >> i >> ch;
    
    if(!(i >= 1 && i <= 8) || !(ch >= 'a' && ch <= 'h'))
        cout << "Wrong input\n";
    else
        GetCell(i , ch);
    

    return 0;
}