H,W=map(int,input().split())
N=int(input())
A=[]
B=[]
for i in range(N):
    x,y=input().split()
    A.append(x)
    B.append(int(y))
list.reverse(A)
list.reverse(B)
x=0
y=0
for i in range(N):
    if A[i]=='R':
        if B[i]==x:
            y=(y-1+W)%W
    else:
        if B[i]==y:
            x=(x-1+H)%H
if (x+y)%2:
    print('black')
else :
    print('white')