H_W = list(map(int,input().split()))
N = int(input())
data = [input().split() for l in range(N)]


m = [[0 for i in range(H_W[1])] for j in range(H_W[0])]

s = 0
ss = 0
for i in range(H_W[0]):
        for j in range(H_W[1]):
                m[i][j] = 0 if s%2==0 else 1
                s += 1
        ss += 1
        s = 0 if ss % 2 ==0 else 1


temp = 0
for i in range(N):
        if (data[i][0] == 'R'):
                temp = m[int(data[i][1])][H_W[1]-1]
                for j in range(H_W[1]-2,-1,-1):
                        m[int(data[i][1])][j+1] = m[int(data[i][1])][j]
                m[int(data[i][1])][0] = temp 
                        
        elif (data[i][0] == 'C'):
                temp = m[H_W[0]-1][int(data[i][1])]
                for j in range(H_W[0]-2,-1,-1):
                        m[j+1][int(data[i][1])] = m[j][int(data[i][1])]
                m[0][int(data[i][1])] = temp

print("white") if m[0][0] == 0 else print("black")