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.Linq;

class Program
{
    static void Main(string[] args)
    {
        string S = Console.ReadLine();
        byte O = 0;

        switch (S)
        {
            case "SUN": O = 7; break;
            case "MON": O = 6; break;
            case "TUE": O = 5; break;
            case "WED": O = 4; break;
            case "THU": O = 3; break;
            case "FRI": O = 2; break;
            case "SAT": O = 1; break;
        }
        Console.WriteLine(O);
    }
}