using System;

public class Program

{

    public static void Main()

    {

        int Value;

        string Operation;

        Console.WriteLine("Enter integer (0-99): ");

        Value= Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Calculate additive or multiplicative persistence (a or m)");

        Operation = Console.ReadLine();

        int count = 0;

        while (Value > 9)

        {

            if (Operation == "a")

            {

                Value = (Value / 10) + (Value % 10);

            }

            else

            {

                Value = (Value / 10) * (Value % 10);

            }

            count = count + 1;

        }   

        Console.WriteLine("The persistence is:");

        Console.WriteLine(count);

    }

}