H, W = map(int,input().split())
N = int(input())
SK = [input().split() for _ in range(N)]
I = J = 0
for S, K in SK[::-1]:
    K = int(K)
    if S == "R" and I == K:
        J = (J - 1) % W
    if S == "C" and J == K:
        I = (I - 1) % H
if (I + J) & 1:
    print("black")
else:
    print("white")