h, w = map(int,input().split())
l = '01' * ((w+1)//2)

l2 = []
for i in range(h):
    if i % 2 == 0:
        l2.append(list(l[0:w]))
    else:
        l2.append(list(l[1:w+1]))

n = int(input())
for _ in range(n):
    s, k = input().split()
    k = int(k)
    if s == 'R':
        x = l2[k].pop() 
        l2[k].insert(0, x)
    else:
        l3 = []
        for i in range(h):
            l3.append(l2[i][k])
            x = l3.pop()
            l3.insert(0, x)
        for i in range(h):
            l2[i][k] = l3[i]

print('black' if l2[0][0] == '1' else 'white')