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: Accepted)

object Main extends App {
  val v = readLine match {
    case "SUN" => 0
    case "MON" => 1
    case "TUE" => 2
    case "WED" => 3
    case "THU" => 4
    case "FRI" => 5
    case "SAT" => 6
    case _ => 999999
  }
  
  println(7-v)
}