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 (3.8.2) (judge verdict: Runtime Error)

def main():
    a, b, x = map(int, input().split())
    print(bi(a, b, x))


def f(a, b, n):
    return a * n + b * len(str(n))


def bi(a: int, b: int, x: int) -> int:
    i = 1
    j = min(10 ** 9, x)

    if f(a, b, i) > x:
        return 0
    if f(a, b, j) <= x:
        return j

    ret = 0
    while True:
        p = (i + j) // 2
        if f(a, b, p) < x:
            i = p
        else:
            j = p

        if i + 1 == j:
            if f(a, b, j) <= x:
                ret = j
            else:
                ret = i
            break

    return ret


if __name__ == '__main__':
    main()