import sys

def main():
    H, W = map(int, input().split())
    if H == W == 1:
        print('white')
        return
    N = int(input())
    S = sys.stdin.read().splitlines()

    wb = '01' * (W // 2 + 2)
    even = int(wb[:W], 2)
    odd = int(wb[1:W+1], 2)

    col, row = 0, 0
    for s in S[::-1]:
        if s == 'R ' + str(row):
            col = col - 1 if col > 0 else W - 1
        elif s == 'C ' + str(col):
            row = row - 1 if row > 0 else H - 1

    n = W - 1 - col
    color = ('white', 'black')
    if row % 2:
        i = bool(odd & (2 ** n))
    else:
        i = bool(even & (2 ** n))
    print(color[i])

main()