H, W = map(int, input().split())
N = int(input())
moves = []
for _ in range(N):
    ss = input().split()
    S, K = ss[0], int(ss[1])
    moves.append((S, K))

r = 0
c = 0
for s, k in reversed(moves):
    match s:
        case 'R':
            if r == k:
                c = (c - 1) % W
        case 'C':
            if c == k:
                r = (r - 1) % H

if (r + c) % 2 == 0:
    print('white')
else:
    print('black')