H,W=[int(i) for i in input().split()]
N=int(input())
sousas=[]
for i in range(N):
    sousa=input().split()
    sousas.append(sousa)

#init
black=[[False for i in range(W)] for j in range(H)]
for i in range(H):
    offset=(i+1)%2
    for j in range(offset,W,2):
        black[i][j]=True

for sousa in sousas:
    if sousa[0]=='R':
        row=int(sousa[1])
        tmp=black[row][W-1]
        for i in reversed(range(1,W)):
            black[row][i]=black[row][i-1]
        black[row][0]=tmp
    else:
        col=int(sousa[1])
        tmp=black[H-1][col]
        for i in reversed(range(1,H)):
            black[i][col]=black[i-1][col]
        black[0][col]=tmp
    # for i in range(H):
    #     print(black[i])
    # print('\n')
ans='black' if black[0][0]==True else 'white'
print(ans)