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;
namespace A
{
  class A
  {
    static void Main()
    {
      string day = Console.ReadLine();
      switch (day){
        case "SUN":
          Console.WriteLine("7");
          break;
        case "MON":
          Console.WriteLine("6");
          break;
        case "TUE":
          Console.WriteLine("5");
          break;
        case "WED":
          Console.WriteLine("4");
          break;
        case "THU":
          Console.WriteLine("3");
          break;
        case "FRI":
          Console.WriteLine("2");
          break;
        case "SAT":
          Console.WriteLine("1");
          break;
        default:
          Console.WriteLine("0");
          break;
      }
    }
  }
}