import datetime

def book_fee(due_date: datetime.date, return_date: datetime.date) -> int:
    if return_date < due_date:
        return 0

    if (return_date.month, return_date.year) == (due_date.month, due_date.year):
        return 15 * (return_date.day - due_date.day)

    if due_date.year == return_date.year:
        return 500 * (return_date.month - due_date.month)

    return 10000


return_date = datetime.date(
    **dict(
        zip(["day", "month", "year"], [int(_) for _ in input().split(" ")])
    )
)
due_date = datetime.date(
    **dict(
        zip(["day", "month", "year"], [int(_) for _ in input().split(" ")])
    )
)

print(book_fee(due_date, return_date))

from datetime import datetime
def fine(returned,due):
    if int(returned[2])<1000:
        returned[2] = returned[2].zfill(4)
    if int(due[2])<1000:
        due[2] = due[2].zfill(4)
    
    due = datetime.strptime(" ".join(due),"%d %m %Y").date()
    returned = datetime.strptime(" ".join(returned),"%d %m %Y").date()
    if returned > due:
       if returned.year > due.year:
           return 10000
       if returned.month > due.month:

           return 500*(returned.month - due.month)
       if returned.day > due.day:
           return 15 * (returned.day - due.day)
    else:
       return 0
       
print(fine(input().split(" "),input().split(" ")))

from datetime import datetime
import math

zwrocona = input().split()
doKiedy = input().split()

def kara(zwrocona, doKiedy):
    Dz = int(zwrocona[0])
    Mz = int(zwrocona[1])
    Rz = int(zwrocona[2])
    Dk = int(doKiedy[0])
    Mk = int(doKiedy[1])
    Rk = int(doKiedy[2])
    
    date1 = datetime(Rk, Mk, Dk)
    date2 = datetime(Rz, Mz, Dz)
    
    diff1 = date2 - date1
    
    diff = diff1.days
    
    if diff <= 0:
        return 0
    elif Mz == Mk and Rz == Rk:
        return diff * 15
    elif Rz == Rk and Mz != Mk:
        return math.floor(diff/30) * 500
    elif Rz != Rk:
        return 10000
    
if len(zwrocona) == 3 and len(doKiedy) == 3:
    print(kara(zwrocona, doKiedy))


    

dr, mr, yr = map(int, input().split())
dd, md, yd = map(int, input().split())
fine = 0
if yr > yd:
    fine = 10000
elif yr == yd:
    if mr > md:
        fine = 500 * (mr-md)
    elif mr == md:
        if dr > dd:
            fine = 15 * (dr-dd)
print(fine)

#python

date_returned = str(input()).split()
date_due = str(input()).split()
delta = [
    int(date_returned[2]) - int(date_due[2]),
    int(date_returned[1]) - int(date_due[1]),
    int(date_returned[0]) - int(date_due[0])
]

if delta[0] > 0:
    print(10000)
elif delta[1] > 0 and delta[0] == 0:
    print(500*(delta[1]))
elif delta[2] > 0 and delta[1] == 0:
    print(15*delta[2])
else:
    print(0)