Problem:
Score : 100 points

Problem Statement

Given is a string S representing the day of the week today.

S is SUN, MON, TUE, WED, THU, FRI, or SAT, for Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday, respectively.

After how many days is the next Sunday (tomorrow or later)?

Constraints

S is SUN, MON, TUE, WED, THU, FRI, or SAT.

Input

Input is given from Standard Input in the following format:

S

Output

Print the number of days before the next Sunday.

Sample Input 1

SAT

Sample Output 1

1

It is Saturday today, and tomorrow will be Sunday.

Sample Input 2

SUN

Sample Output 2

7

It is Sunday today, and seven days later, it will be Sunday again.

Solution in Python (3.4.3) (judge verdict: Accepted)

day = input()
if day == 'SUN':
  day = 0
elif day == 'MON':
  day = 1
elif day == 'TUE':
  day = 2
elif day == 'WED':
  day = 3
elif day == 'THU':
  day = 4
elif day == 'FRI':
  day = 5
elif day == 'SAT':
  day = 6
print(7 - day)