PYTHON

def is_leap(y):
    return (y % 4 == 0 and y % 100 != 0) or (y % 400 == 0)

def days_in_month(y, m):
    if m in {1, 3, 5, 7, 8, 10, 12}:
        return 31
    if m in {4, 6, 9, 11}:
        return 30
    if m == 2:
        return 29 if is_leap(y) else 28
    return 0

def digit_sum(n):
    s = 0
    while n > 0:
        s += n % 10
        n = n // 10
    return s

def date_digit_sum(y, m, d):
    return digit_sum(y) + digit_sum(m) + digit_sum(d)

def next_date(y, m, d):
    d += 1
    max_d = days_in_month(y, m)
    if d > max_d:
        d = 1
        m += 1
        if m > 12:
            m = 1
            y += 1
    return y, m, d

y1, m1, d1 = map(int, input().split())
y2, m2, d2 = map(int, input().split())

current_y, current_m, current_d = y1, m1, d1
target_y, target_m, target_d = y2, m2, d2

s = set()

while True:
    s.add(date_digit_sum(current_y, current_m, current_d))
    if current_y == target_y and current_m == target_m and current_d == target_d:
        break
    current_y, current_m, current_d = next_date(current_y, current_m, current_d)

print(len(s))