using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string str = Console.ReadLine();

            int comandnum = int.Parse(Console.ReadLine());
            List<string> resultoutput = new List<string>();

            for (int i = 0; i < comandnum; i++)
            {
                string[] command = Console.ReadLine().Split(' ');

                switch (command[0])
                {
                    case "print":
                        string output = print(str, int.Parse(command[1]), int.Parse(command[2]));
                        resultoutput.Add(output);
                        break;

                    case "replace":
                        str = replace(str, int.Parse(command[1]), int.Parse(command[2]), command[3]);

                        break;

                    case "reverse":
                        str = reverse(str, int.Parse(command[1]), int.Parse(command[2]));
                        break;
                }

            }

            foreach (var output in resultoutput) Console.WriteLine(output);

        }
    

        private static string print(string str, int first, int end)
        {
            string result = string.Empty;

            char[] onechar = str.ToCharArray();

            for(int i = first; i <= end; i++)
            {
                result += onechar[i];
            }

            return result;

        }

        private static string replace(string str, int first, int end, string replace)
        {
            string result = string.Empty;

            char[] onechar = str.ToCharArray();

            //???????????????char??????????????\??????
            char[] test2 = new char[end];

            test2 = replace.ToCharArray();

            //??????????????????????????£????????????????????????
            int b = 0;

            for(int i = 0; i < str.Length; i++)
            {
                if(i == first)
                {
                    for (int a = first; a <= end; a++)
                    {
                        onechar[a] = test2[b];
                        result += onechar[a];
                        b++;
                    }

                    i += b;
                }


                if (i == str.Length) break;

                result += onechar[i];

            }


            //for (int i = first; i <= end; i++)
            //{
            //    result += onechar[i];
            //}


            //System.Text.StringBuilder replacestr = new System.Text.StringBuilder(str);

            //result = replacestr.Replace(result, replace).ToString();

            return result;
        }

        private static string reverse(string str, int first, int end)
        {
            string original = string.Empty;
            string result = string.Empty;

            char[] onechar = str.ToCharArray();


            for(int i = end; i >= first; i--)
            {
                result += onechar[i];
            }

            for(int j = first; j <= end; j++)
            {
                original += onechar[j];
            }

            System.Text.StringBuilder replacestr = new System.Text.StringBuilder(str);

            result =  replacestr.Replace(original, result).ToString();

            return result;

        }

    }

}

Measured memory_bytes: 9824