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 Fortran (gfortran v4.8.4) (judge verdict: Accepted)

program a
    implicit none
    character(len=3) :: S
    character(len=3) :: days(7)
    integer :: i

    read(*, *) S

    days(:) = ["SAT", "FRI", "THU", "WED", "TUE", "MON", "SUN"]

    do i = 1, 7
        if(S == days(i)) then
            print *, i
            exit
        endif
    end do

end program a