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) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);	
		String s = sc.next();
		int num = 0;
		
		if(s.equals("SUN")) {
		 num = 7;
		} else if(s.equals("MON")) {
			 num = 6;
			} else if(s.equals("TUE")) {
				 num = 5;
			} else if(s.equals("WED")) {
				 num = 4;
			} else if(s.equals("THU")) {
				 num = 3;
			} else if(s.equals("FRI")) {
				 num = 2;
			} else if(s.equals("SAT")) {
				 num = 1;
			}
	
		
		System.out.println(num);
		
	
		
		
		
	}
}