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: Runtime Error)

import math as ma
inputs = input().split(" ")
A = int(inputs[0])
B = int(inputs[1])
X = int(inputs[2])

# １桁
max_num = 0
for x in range(1, 19):
    k = ma.floor((X - x*B) / A)
    # print(x, k)
    if len(list(str(k))) == x:
        max_num = k
        break
    elif len(list(str(k))) < x:
        break
    elif len(list(str(k))) > x:
        pass
if max_num > 1000000000:
    max_num = 1000000000
print(max_num)