Char Multiply

using System;
using System.Linq;

class CharachterMultiplier
{
    static void Main(string[] args)
    {
        string[] input = Console.ReadLine()
            .Split()
            .ToArray();

        string firstText = input[0];
        string secondText = input[1];
        int result = Multiply(firstText, secondText);

        Console.WriteLine(result);
    }

    static int Multiply(string firstText, string secondText)
    {
        int minLength = Math.Min(firstText.Length, secondText.Length);
        int maxLength = Math.Max(firstText.Length, secondText.Length);
        int result = 0;

        for (int index = 0; index < minLength; index++)
        {
            result += firstText[index] * secondText[index];
        }

        for (int index = minLength; index < maxLength; index++)
        {
            result += firstText.Length > secondText.Length ? firstText[index] : secondText[index];
        }

        return result;
    }
}