#!/usr/bin/env python3
h, w = map(int,input().split())
n = int(input())
ops = [(lambda s, k: (s, int(k)))(*input().split()) for i in range(n)]
y, x = 0, 0
for s, k in reversed(ops):
    if s == 'R':
        if y == k:
            x = (x - 1) % w
    elif s == 'C':
        if x == k:
            y = (y - 1) % h
print(y % 2 == x % 2 and 'white' or 'black')