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 Java7 (OpenJDK 1.7.0) (judge verdict: Accepted)

import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        String weeksday[]={"MON","TUE","WED","THU","FRI","SAT","SUN"};
        Scanner sc = new Scanner(System.in);
        String todays=sc.next();
        int i=0;
        int result=0;
        boolean x= false;
        if(todays.equals("SUN")){
            result=7;
        }else{
            while(x==false){
                if(todays.equals(weeksday[i])){
                    x=true;
                }
                i++;
            }
            result=7-i;
        }
        System.out.print(result);
    }
}