[C#] 백준 5622번 : 다이얼

[C#] 백준 5622번 : 다이얼

using System;

class Program
{
    static void Main()
    {
        string word = Console.ReadLine();
        int sum = 0;

        for (int i = 0; i < word.Length; i++)
        {
            switch (word[i])
            {
                case 'A': case 'B': case 'C': sum += 3; break;
                case 'D': case 'E': case 'F': sum += 4; break;
                case 'G': case 'H': case 'I': sum += 5; break;
                case 'J': case 'K': case 'L': sum += 6; break;
                case 'M': case 'N': case 'O': sum += 7; break;
                case 'P': case 'Q': case 'R': case 'S': sum += 8; break;
                case 'T': case 'U': case 'V': sum += 9; break;
                case 'W': case 'X': case 'Y': case 'Z': sum += 10; break;
            }
        }

        Console.WriteLine(sum);
    }
}