Cat Training Attendance

start_hours = int(input())
check_hours = int(input())
check_minutes = int(input())
day_of_week = input()

bonus_points = 0

if check_hours < start_hours and check_hours <= (start_hours - 1):
    bonus_points = 1.5
elif check_hours == start_hours and check_minutes <= 30:
    bonus_points = 1
elif (check_hours == start_hours and check_minutes > 30) or check_hours <= (start_hours + 4):
    bonus_points = 0.5

if day_of_week == "Monday" or day_of_week == "Wednesday" or day_of_week == "Friday":
    bonus_points += 0.6
elif day_of_week == "Tuesday" or day_of_week == "Thursday" or day_of_week == "Saturday":
    bonus_points += 0.8
elif day_of_week == "Sunday":
    bonus_points += 2

print(f'{bonus_points:.2f}')