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: Runtime Error)

fun main() {
  when (readLine()!!) {
    "MON" -> println(6)
    "TUE" -> println(5)
    "WED" -> println(4)
    "THU" -> println(3)
    "FRI" -> println(2)
    "SAT" -> println(1)
    "SUN" -> println(7)
    else -> println(-1)
  }
}