import sys
input = sys.stdin.readline

H,W=map(int,input().split())
N=int(input())
Q=[input().split() for i in range(N)]

x=0
y=0

for c,ind in Q[::-1]:
    if c=="R":
        if int(ind)==x:
            y=(y-1)%W
    if c=="C":
        if int(ind)==y:
            x=(x-1)%H

if (x+y)%2==1:
    print("black")
else:
    print("white")