Problem:
Score : 400 points

Problem Statement

Takahashi has a string S consisting of lowercase English letters.

Starting with this string, he will produce a new one in the procedure given as follows.

The procedure consists of Q operations. In Operation i (1 \leq i \leq Q), an integer T_i is provided, which means the following:

If T_i = 1: reverse the string S.

If T_i = 2: An integer F_i and a lowercase English letter C_i are additionally provided.

If F_i = 1 : Add C_i to the beginning of the string S.

If F_i = 2 : Add C_i to the end of the string S.

Help Takahashi by finding the final string that results from the procedure.

Constraints

1 \leq |S| \leq 10^5

S consists of lowercase English letters.

1 \leq Q \leq 2 \times 10^5

T_i = 1 or 2.

F_i = 1 or 2, if provided.

C_i is a lowercase English letter, if provided.

Input

Input is given from Standard Input in the following format:

S
Q
Query_1
:
Query_Q

In the 3-rd through the (Q+2)-th lines, Query_i is one of the following:

1

which means T_i = 1, and:

2 F_i C_i

which means T_i = 2.

Output

Print the resulting string.

Sample Input 1

a
4
2 1 p
1
2 2 c
1

Sample Output 1

cpa

There will be Q = 4 operations. Initially, S is a.

Operation 1: Add p at the beginning of S. S becomes pa.

Operation 2: Reverse S. S becomes ap.

Operation 3: Add c at the end of S. S becomes apc.

Operation 4: Reverse S. S becomes cpa.

Thus, the resulting string is cpa.

Sample Input 2

a
6
2 2 a
2 1 b
1
2 2 c
1
1

Sample Output 2

aabc

There will be Q = 6 operations. Initially, S is a.

Operation 1: S becomes aa.

Operation 2: S becomes baa.

Operation 3: S becomes aab.

Operation 4: S becomes aabc.

Operation 5: S becomes cbaa.

Operation 6: S becomes aabc.

Thus, the resulting string is aabc.

Sample Input 3

y
1
2 1 x

Sample Output 3

xy

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using Console = System.Console;

    namespace Atcoder
    {
        class Program
        {
            static void Main(string[] args)
            {
                LinkedList<char> s = new LinkedList<char>();
                var firstS = Read();
                s.AddLast('1');
                var N = ReadLong();
                bool isReverse = false;
                for (int i = 0; i < N; i++)
                {
                    var r = Console.ReadLine().Split();
                    if (r.Length == 1)
                    {
                        isReverse = !isReverse;
                        continue;
                    }

                    var putFirst = int.Parse(r[1]) == 1;
                    if (putFirst)
                    {
                        if (isReverse)
                        {
                            s.AddLast(r[2][0]);
                        }
                        else
                        {
                            s.AddFirst(r[2][0]);
                        }
                        
                    }
                    else
                    {
                        if (isReverse)
                        {
                            s.AddFirst(r[2][0]);
                        }
                        else
                        {
                            s.AddLast(r[2][0]);
                        }
                    }
                }

                var ts = new string(s.ToArray());
                ts = ts.Replace("1", firstS);
                var ret = isReverse ? new string(ts.Reverse().ToArray()) : ts;
                Console.WriteLine(ret);
            }
            private static readonly Func<string> Read = () => Console.ReadLine();
            private static readonly Func<string[]> ReadStringArray = () => Console.ReadLine().Split();
            private static readonly Func<int> ReadInt = () => int.Parse(Console.ReadLine());
            private static readonly Func<long> ReadLong = () => long.Parse(Console.ReadLine());
            private static readonly Func<int[]> ReadIntArray = () => Console.ReadLine().Split().Select(int.Parse).ToArray();
            private static readonly Func<long[]> ReadLongArray = () => Console.ReadLine().Split().Select(long.Parse).ToArray();
            private static readonly Action<string> Cw = str => Console.WriteLine(str);
        }
    }