lines = []
ch_i = ' '

for i in range(5):
    line = input()
    lines.append(line)


def get_from_range(s: str):
    temp = s.split('(')[1]
    temp = temp.split(')')[0]
    temp = temp.split(',')
    if len(temp) < 3:
        temp.append('1')
    return temp


def fuck(ch: str, num_i: int):
    if ch == ch_i:
        return num_i
    return int(ch)


def div1(a, b):
    if a % b == 0:
        return a // b - 1
    else:
        return a // b


def div2(a, b):
    if a % b == 0:
        return a // b + 1
    else:
        return a // b + 1


def get_sum(d, e, f):
    if f > 0:
        if d >= e:
            return 0
        st = d
        max_k = div1(e - d, f)
        ed = st + max_k * f
        return int((st + ed) * (max_k + 1) // 2)
    else:
        if d <= e:
            return 0
        st = d
        max_k = div1(e - d, f)
        ed = st + max_k * f
        return int((st + ed) * (max_k + 1) // 2)


line1_list = lines[1].split(' ')
line2_list = lines[2].split(' ')
ch_i = line1_list[1]
vals1 = get_from_range(line1_list[3])
vals2 = get_from_range(line2_list[3])
# print(vals1)
# print(vals2)
ans = 0
for i in range(int(vals1[0]), int(vals1[1]), int(vals1[2])):
    ans += get_sum(fuck(vals2[0], i), fuck(vals2[1], i), fuck(vals2[2], i))

print(ans)