H, W = map(int, input().split())
N = int(input())
SK = []
for _ in range(N):
    s, k = input().split()
    k = int(k)
    SK.append((s, k))
x, y = 0, 0
for s, k in reversed(SK):
    if s == "R":
        if x == k:
            y -= 1
            y %= W
    else:
        if y == k:
            x -= 1
            x %= H
if (x & 1) ^ (y & 1) == 0:
    print("white")
else:
    print("black")