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 Scala (2.11.7) (judge verdict: Wrong Answer)

import java.io._
import java.text._
import java.util.regex._

object Main {

    def countingValleys(s: String): Int = {
      val weekDaysMap: Map[String, Int] = Map(
        "SUN" -> 0,
        "MON" -> 6,
        "TUE" -> 5,
        "WED" -> 4,
        "THU" -> 3,
        "FRI" -> 2,
        "SAT" -> 1
      )
      weekDaysMap(s)
    }

    def main(args: Array[String]) {
        val stdin = scala.io.StdIn
        val s: String = stdin.readLine
        println(countingValleys(s))
    }
}