#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 2e5 + 5;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ll n, x, y, flag;
  cin >> n >> x >> y;
  flag = (n - x) + (n - y);
  if (flag + 2 > n) {
    cout << "WHITE" << endl;
  } else {
    cout << "BLACK" << endl;
  }
  return 0;
}
