cubes = process_input('test2.txt')
X, Y, Z = [], [], []
for cube in cubes:
    x0, x1, y0, y1, z0, z1 = cube.coords
    X.append(x0)
    X.append(x1 + 1)
    Y.append(y0)
    Y.append(y1 + 1)
    Z.append(z0)
    Z.append(z1 + 1)
X = list(set(X))
Y = list(set(Y))
Z = list(set(Z))
X.sort()
Y.sort()
Z.sort()
N = len(X)
grid = defaultdict(lambda: 0)
for cube in cubes:
    x0 = X.index(cube.x0)
    x1 = X.index(cube.x1 + 1)
    y0 = Y.index(cube.y0)
    y1 = Y.index(cube.y1 + 1)
    z0 = Z.index(cube.z0)
    z1 = Z.index(cube.z1 + 1)
    value = int(cube.state == 'on')
    for x in range(x0, x1):
        for y in range(y0, y1):
            for z in range(z0, z1):
                grid[(x, y, z)] = value

total = 0
for x in range(N-1):
    for y in range(N-1):
        for z in range(N-1):
            total += grid[(x, y, z)] * (X[x+1] - X[x])  * (Y[y+1] - Y[y]) * (Z[z+1] - Z[z])

print(total)