02. Character Multiplier

using System;
using System.Collections.Generic;
using System.Linq;

namespace  02. Character Multiplier
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] word = Console.ReadLine().Split().ToArray();
            string firstWord = word[1];
            string secondWord = word[0];
            if (word[0].Length >= word[1].Length)
            {
                firstWord = word[0];
                secondWord = word[1];
            }

            int minWordLenght = Math.Min(word[0].Length, word[1].Length);
            int maxWordLenght = Math.Max(word[0].Length, word[1].Length);
            int sum = 0;
            for (int i = 0; i < minWordLenght; i++)
            {
                char firstLetter = firstWord[i];
                char secondLetter = secondWord[i];
                sum += firstLetter * secondLetter;
            }
            for (int i = minWordLenght; i < maxWordLenght; i++)
            {
                char firstLetter = firstWord[i];
                sum += firstLetter;
            }
            Console.WriteLine(sum);
        }
    }
}