#include <bits/stdc++.h>
int main() {
  long long int k, a, b;
  scanf("%lld", &k);
  scanf("%lld %lld", &a, &b);
  if ((a + b) <= k + 1) {
    printf("White\n");
  } else {
    printf("Black\n");
  }
  return 0;
}
