#include<iostream>
using namespace std;
int main(){
int N;
cin>>N;
if(N%2==0)
    cout<<"White";
else
    cout<<"Black";
return 0;
}

#include <bits/stdc++.h>
using namespace std;
#define endl "\n"

int main()
{
    ios_base::sync_with_stdio(false); cin.tie(nullptr);

    int N,i=1,save=0;

    cin>>N;
    while(save<N)
    {
        save=save+i;
        i++;
    }
    cout<<i-1<<endl;
    return 0;
}
