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.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        
        if (str.equals("SUN")) {
            System.out.println(7);
        } else if (str.equals("MON")) {
            System.out.println(6);
        } else if (str.equals("TUE")) {
            System.out.println(5);
        } else if (str.equals("WED")) {
            System.out.println(4);
        } else if (str.equals("THU")) {
            System.out.println(3);
        } else if (str.equals("FRI")) {
            System.out.println(2);
        } else {
            System.out.println(1);
        }
    }
}