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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String str = scan.nextLine();
        scan.close();
      
      if(str.equals("SAT")){
        System.out.println("1");
      }else if(str.equals("FRI")){
        System.out.println("2");
      }else if(str.equals("THU")){
        System.out.println("3");
      }else if(str.equals("WED")){
        System.out.println("4");
      }else if(str.equals("TUE")){
        System.out.println("5");
      }else if(str.equals("MON")){
        System.out.println("6");
      }else if(str.equals("SUN")){
        System.out.println("7");
    }
    }
}