import sys

M = [[False for _ in range(1000)] for _ in range(1000)]

for l in sys.stdin.readlines():
    I = l[:-1].split(' ')
    xf,yf = list(map(int,I[-3].split(',')))
    xt,yt = list(map(int,I[-1].split(',')))
    for x in range(xf,xt+1):
        for y in range(yf,yt+1):
            if I[-4] == 'on':
                M[x][y] = True
            elif I[-4] == 'off':
                M[x][y] = False
            else:
                M[x][y] = not M[x][y]

print(sum(x for C in M for x in C))