H, W = map(int, input().split())
N = int(input())
SK = [input() for i in range(N)]
r = 0
c = 0
for sk in SK[::-1]:
    s, k = sk.split()
    k = int(k)
    if s == "R":
        if k == r:
            c = (c - 1) % H
    else:
        if k == c:
            r = (r - 1) % W
if (r + c) & 1:
    print("black")
else:
    print("white")