01.04.Bulls and Cows-решение с if - oве

using System;
class BullsAndCows
{
    static void Main()
    {
        int input = int.Parse(Console.ReadLine());
        int bullsCount = int.Parse(Console.ReadLine());
        int cowsCount = int.Parse(Console.ReadLine());
        int result = 0;

        for (int guessNumber = 1111; guessNumber < 10000; guessNumber++)
        {
            int bulls = 0, cows = 0;
            int currentGuessA = guessNumber / 1000 % 10;
            int currentGuessB = guessNumber / 100 % 10;
            int currentGuessC = guessNumber / 10 % 10;
            int currentGuessD = guessNumber / 1 % 10;

            if(currentGuessA == 0 || currentGuessB == 0
                || currentGuessC == 0 || currentGuessD == 0)
            {
                continue;
            }

            int currentSecA = input / 1000 % 10;
            int currentSecB = input / 100 % 10;
            int currentSecC = input / 10 % 10;
            int currentSecD = input / 1 % 10;

            if (currentGuessA == currentSecA)
            {
                currentGuessA = -1;
                currentSecA = -2;
                bulls++;
            }
            if (currentGuessB == currentSecB)
            {
                currentGuessB = -1;
                currentSecB = -2;
                bulls++;
            }
            if (currentGuessC == currentSecC)
            {
                currentGuessC = -1;
                currentSecC = -2;
                bulls++;
            }
            if (currentGuessD == currentSecD)
            {
                currentGuessD = -1;
                currentSecD = -2;
                bulls++;
            }

            if (currentGuessA == currentSecB)
            {
                currentGuessA = -1;
                currentSecB = -2;
                cows++;
            }
            if (currentGuessA == currentSecD)
            {
                currentGuessA = -1;
                currentSecD = -2;
                cows++;
            }
            if (currentGuessA == currentSecC)
            {
                currentGuessA = -1;
                currentSecC = -2;
                cows++;
            }
            if (currentGuessB == currentSecA)
            {
                currentGuessB = -1;
                currentSecA = -2;
                cows++;
            }
            if (currentGuessB == currentSecC)
            {
                currentGuessB = -1;
                currentSecC = -2;
                cows++;
            }
            if (currentGuessB == currentSecD)
            {
                currentGuessB = -1;
                currentSecD = -2;
                cows++;
            }
            if (currentGuessD == currentSecA)
            {
                currentGuessD = -1;
                currentSecA = -2;
                cows++;
            }
            if (currentGuessD == currentSecB)
            {
                currentGuessD = -1;
                currentSecB = -2;
                cows++;
            }
            if (currentGuessD == currentSecC)
            {
                currentGuessB = -1;
                currentSecC = -2;
                cows++;
            }
            if (currentGuessC == currentSecA)
            {
                currentGuessC = -1;
                currentSecA = -2;
                cows++;
            }
            if (currentGuessC == currentSecB)
            {
                currentGuessC = -1;
                currentSecB = -2;
                cows++;
            }
            if (currentGuessC == currentSecD)
            {
                currentGuessC = -1;
                currentSecD = -2;
                cows++;
            }
            if (cows == cowsCount && bulls == bullsCount)
            {
                result = 1;
                Console.Write(guessNumber + " ");
            }

        }
        if (result == 0)
        {
            Console.WriteLine("No");
        }
        Console.WriteLine();
    }
}