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.Collections.Generic;

class Prog{
    static void Main(string[] args){
        var a = Console.ReadLine();
        var list = new List<string>();
        list.Add("SUN");
        list.Add("MON");
        list.Add("TUE");
        list.Add("WED");
        list.Add("THU");
        list.Add("FRI");
        list.Add("SAT");
        for(int i = 0;i < 7;i++){
            if(list[i]　== a ){
                Console.WriteLine(7-i);
            }
        }
    }
}