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) {
        Scanner s = new Scanner(System.in);

        String day = s.next();
        int answer = 0;

        switch (day) {
        case "MON":
            answer = 6;
            break;
        case "TUE":
            answer = 5;
            break;
        case "WED":
            answer = 4;
            break;
        case "THU":
            answer = 3;
            break;
        case "FRI":
            answer = 2;
            break;
        case "SAT":
            answer = 1;
            break;
        case "SUN":
            answer = 7;
            break;
        }

        System.out.println(answer);
    }
}