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: Wrong Answer)

import java.util.Scanner;

public class Main {

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String n = sc.nextLine();

		if(n.equals("SUN")){
			System.out.println("MON");
		}else if(n.equals("MON")){
			System.out.println("TUE");
		}else if(n.equals("TUE")){
			System.out.println("WED");
		}else if(n.equals("WED")){
			System.out.println("THU");
		}else if(n.equals("THU")){
			System.out.println("FRI");
		}else if(n.equals("FRI")){
			System.out.println("SAT");
		}else if(n.equals("SAT")){
			System.out.println("SUN");
		}
	}
}