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()

    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

    puzzle = '01' * (W // 2 + 1)
    color = ('white', 'black')
    i = int(puzzle[col])
    if row % 2:
        i = not i
    print(color[i])

main()