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: Time Limit Exceeded)

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

namespace AC
{
    class Program
    {
        static void Main(string[] args)
        {
            var S = Read();
            var Q = ReadInt();
            var qL = new string[Q][];
            var revCnt = 0;
            for (int i = 0; i < Q; i++)
            {
                qL[i] = Read().Split(' ');
                if (qL[i].Count() == 1) revCnt++;
            }
            if (revCnt % 2 == 0)
            {
                StringBuilder sb = new StringBuilder(S);
                var right = true;
                for (int i = 0; i < Q; i++)
                {
                    var qry = qL[i];
                    if (qry.Count() == 1)
                    {
                        if (right) right = false;
                        else right = true;
                    }
                    else
                    {
                        var F = int.Parse(qry[1]);
                        var C = qry[2];
                        if (F == 1)
                        {
                            if (right)
                            {
                                sb.Insert(0, C);
                            }
                            else
                            {
                                sb.Append(C);
                            }
                        }
                        else
                        {
                            if (right)
                            {
                                sb.Append(C);
                            }
                            else
                            {
                                sb.Insert(0, C);
                            }
                        }
                    }
                }
                S = sb.ToString();
            }
            else
            {
                StringBuilder sb = new StringBuilder();
                for (int i = S.Count() - 1; i >= 0; i--)
                {
                    sb.Append(S[i]);
                }
                var right = true;
                StringBuilder L = new StringBuilder();
                StringBuilder R = new StringBuilder();
                for (int i = 0; i < Q; i++)
                {
                    var qry = qL[i];
                    if (qry.Count() == 1)
                    {
                        if (right) right = false;
                        else right = true;
                    }
                    else
                    {
                        var F = int.Parse(qry[1]);
                        var C = qry[2];
                        if (F == 1)
                        {
                            if (right)
                            {
                                R.Append(C);
                            }
                            else
                            {
                                L.Insert(0, C);
                            }
                        }
                        else
                        {
                            if (right)
                            {
                                L.Insert(0, C);
                            }
                            else
                            {
                                R.Append(C);
                            }
                        }
                    }
                }
                S = L.ToString() + sb.ToString() + R.ToString();
            }

            Console.WriteLine(S);
            Console.ReadKey();
        }

        static string Read() { return Console.ReadLine(); }
        static int ReadInt() { return int.Parse(Read()); }
        static long ReadLong() { return long.Parse(Read()); }
        static int[] ReadArrayInt() { return Read().Split(' ').Select(s => int.Parse(s)).ToArray(); }
        static long[] ReadArrayLong() { return Read().Split(' ').Select(s => long.Parse(s)).ToArray(); }
    }
}