#yuki351

H,W=map(int,raw_input().split())
n=int(raw_input())
s=[];k=[]
for i in xrange(n):
 s1,k1=map(str,raw_input().split())
 s.append(s1)
 k.append(int(k1))
r=0;c=0
for i in xrange(n-1,-1,-1):
 if s[i]=='R':
  if k[i]==r:
   c=(c+W-1)%W
 else:
  if k[i]==c:
   r=(r+H-1)%H
if (r+c)%2:
 print 'black'
else:
 print 'white'