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.*;
class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        String n = sc.nextLine();
        System.out.println(ret(n));
        sc.close();
    }
    static int ret (String n){
        int ret = 7;
        switch (n) {
            case "MON":
                ret = 6;
                break;
            case "TUE":
                ret = 5;
                break;
            case "WED":
                ret = 4;
                break;
            case "THU":
                ret = 3;
                break;
            case "FRI":
                ret = 2;
                break;
            case "SAT":
                ret = 1;
                break;
            default:
                break;
        }
        return ret;
    }
}