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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

class  CompetitiveProgrammingProgram
{
    static void Main(string[] args)
    {
        string s=Console.ReadLine();
        string[] s2={"SUN","MON","TUE","WED","THU","FRI","SAT"};
        int ans=7-Array.IndexOf(s2,s);        
        Console.WriteLine(ans.ToString());
    }
}