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 Kotlin (1.0.0) (judge verdict: Wrong Answer)

fun main(args: Array<String>) {
    val day: String = readLine()!!
    when(day) {
        WeekDay.SUN.toString() -> println(WeekDay.SUN.restDay)
        WeekDay.MON.toString() -> println(WeekDay.MON.restDay)
        WeekDay.TUE.toString() -> println(WeekDay.THU.restDay)
    	WeekDay.WED.toString() -> println(WeekDay.WED.restDay)
        WeekDay.THU.toString() -> println(WeekDay.THU.restDay)
        WeekDay.FRI.toString() -> println(WeekDay.FRI.restDay)
        WeekDay.SAT.toString() -> println(WeekDay.SAT.restDay)
    }
}

enum class WeekDay(val restDay: Int) {
	SUN(7),
    MON(6),
    TUE(5),
    WED(4),
    THU(3),
    FRI(2),
    SAT(1)
}