import sys
ARR = sys.stdin.read().splitlines()
H,W = ARR[0].split()
H = int(H)
W = int(W)
N = ARR[1]
N = int(N)
hx = hy = 0
for i in xrange(N-1,-1,-1):
    s,k = ARR[i+2].split()
    k = int(k)
    if s == "R":
        if k == hy:
            hx = hx - 1
            if hx == -1:
                hx = W - 1
    else:
        if k == hx:
            hy = hy - 1
            if hy == -1:
                hy = H - 1
print "white" if (hx + hy) % 2 == 0 else "black"