H,W = map(int,raw_input().split())
N = int(raw_input())
SK = [raw_input().split() for i in xrange(N)]
hx = hy = 0
for i in xrange(N-1,-1,-1):
    s,k = SK[i]
    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"