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# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
using System.Linq;

namespace testing
{
    class Program
    {

        static void Main(string[] args)
        {
            //int[] d = Console.ReadLine().Split().Select(int.Parse).ToArray();
            string a = Console.ReadLine();
            if (a == "SAT") Console.WriteLine("1");
            if (a == "FRI") Console.WriteLine("2");
            if (a == "THU") Console.WriteLine("3");
            if (a == "WED") Console.WriteLine("4");
            if (a == "TUE") Console.WriteLine("5");
            if (a == "MON") Console.WriteLine("6");
            if (a == "SUN") Console.WriteLine("7");
        }
    }
}