import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

H,W = map(int,readline().split())
N = int(readline())
SK = readlines()

x,y = 0,0
for line in SK[::-1]:
    s,k = line.split()
    k = int(k)
    if s == b'R':
        if k != x:
            continue
        y -= 1
        if y == -1:
            y += W
    else:
        if k != y:
            continue
        x -= 1
        if x == -1:
            x += H

answer = 'black' if (x^y)&1 else 'white'
print(answer)