Problem:
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Transformation

Write a program which performs a sequence of commands to a given string $str$. The command is one of:

print a b: print from the a-th character to the b-th character of $str$

reverse a b: reverse from the a-th character to the b-th character of $str$

replace a b p: replace from the a-th character to the b-th character of $str$ with p

Note that the indices of $str$ start with 0.

Input

In the first line, a string $str$ is given. $str$ consists of lowercase letters. In the second line, the number of commands q is given. In the next q lines, each command is given in the above mentioned format.

Output

For each print command, print a string in a line.

Constraints

$1 \leq $ length of $str \leq 1000$

$1 \leq q \leq 100$

$0 \leq a \leq b < $ length of $str$

for replace command, $b - a + 1 = $ length of $p$

Sample Input 1

abcde
3
replace 1 3 xyz
reverse 0 2
print 1 4

Sample Output 1

xaze

Sample Input 2

xyz
3
print 0 2
replace 0 2 abc
print 0 2

Sample Output 2

xyz
abc

Solution in C# (judge verdict: Accepted)

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

class Program {
    static int Main(string[] args) {
        List<string> list = new List<string>();

        string str = Console.ReadLine();

        int q = int.Parse(Console.ReadLine());

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

            int a = int.Parse(s[1]);
            int b = int.Parse(s[2]);

            if (s[0] == "print") {
                list.Add(str.Substring(a, b - a + 1));
            }
            else if (s[0] == "reverse") {
                str = StrReverse(str, a, b);
            }
            else if (s[0] == "replace") {
                str = StrReplace(str, a, b, s[3]);
            }
        }

        for (int i = 0; i < list.Count; i++) {
            Console.WriteLine(list[i]);
        }
        return 0;
    }

    static string StrReplace(string str, int a, int b, string p) {
        string v = string.Empty;

        if (a > 0) {
            v = str.Substring(0, a);
        }
        v += p;
        v += str.Substring(b + 1);
        return v;
    }

    static string StrReverse(string str, int a, int b) {
        string v = string.Empty;
        if (a > 0) {
            v = str.Substring(0, a);
        }

        for (int i = b; i >= a; i--) {
            v += str.Substring(i, 1);
        }

        v += str.Substring(b + 1);

        return v;
    }
}