def main():
    H, W = map(int, input().split())
    N = int(input())
    R = range(N)
    H, W = H-1, W-1
    S = []
    K = []
    c = 0
    while c<N:
        s = input()
        S.append(s[0])
        K.append(int(s[2:]))
        c+=1
    y, x = 0, 0
    c = N
    while c>0:
        c -= 1
        if S[c] == 'C':
            if K[c] == x:
                y += -1 if y else H
        else:
            if K[c] == y:
                x += -1 if x else W
    print('black' if (y+x)%2 else 'white')
if __name__ == '__main__':
    main()