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;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Competition
{
    public class Program
    {
        
        static void Main(string[] args)
        {
            var S = Console.ReadLine();
            var res = 0;
            if (S == "SUN") res = 7;
            if (S == "MON") res = 6;
            if (S == "TUE") res = 5;
            if (S == "WED") res = 4;
            if (S == "THU") res = 3;
            if (S == "FRI") res = 2;
            if (S == "SAT") res = 1;
            Console.WriteLine(res);
        }

    }
}