#include <bits/stdc++.h>
using namespace std;
int main() {
  long long n, x, y, a, b;
  cin >> n >> x >> y;
  a = max(x - 1, y - 1);
  b = max(n - x, n - y);
  if (b < a)
    cout << "Black";
  else
    cout << "white";
  return 0;
}
