import sys

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

    if W == 1:
        even = 0
        odd = 1
    else:
        n = W // 2
        if W % 2:
            even = int('01' * n + '0', 2)
            odd = int('10' * n + '1', 2)
        else:
            even = int('01' * n, 2)
            odd = int('10' * n, 2)

    col, row = 0, 0
    for n in S[::-1]:
        n = n.rstrip()
        if n == 'R ' + str(row):
            col += 1
        elif n == 'C ' + str(col):
            row += 1
    col = col % (W - 1) if W > 1 else col
    row = row % (H - 1) if H > 1 else row
    n = W - 1 - col
    if row % 2:
        i = odd & (2 ** n)
    else:
        i = even & (2 ** n)
    i = 1 if i else 0
    color = ('white', 'black')
    print(color[i])

main()