import sys
input=lambda: sys.stdin.readline().rstrip()
h,w=map(int,input().split())
n=int(input())
S=[(map(str,input().split())) for _ in range(n)]
cur=[0,0]
for s,k in S[::-1]:
  if s=="R" and cur[0]==int(k):
    cur[1]-=1
    if cur[1]<0:
      cur[1]+=w
  if s=="C" and cur[1]==int(k):
    cur[0]-=1
    if cur[0]<0:
      cur[0]+=h
if sum(cur)%2==0:
  print("white")
else:
  print("black")