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;
class Program
{
    static void Main(string[] args)
    {
            // 入力
            string sS = System.Console.ReadLine().Trim();
            List<char> lstcS = sS.ToList();
            sS = System.Console.ReadLine().Trim();
            int iQ = int.Parse(sS);
            Boolean bNom = true;
            List<char> lstaS = new List<char>();                        // 先頭に追加文字
            List<char> lstaE = new List<char>();                        // 末尾に追加文字
            for (int i = 0; i < iQ; i++)
            {
                string[] sQ = System.Console.ReadLine().Trim().Split(' ');
                int iT = int.Parse(sQ[0]);
                switch (iT)
                {
                    case 1:
                        List<char> lstaT = new List<char>();
                        lstaT.AddRange(lstaS);
                        lstaS = new List<char>();
                        lstaS.AddRange(lstaE);
                        lstaE = new List<char>();
                        lstaE.AddRange(lstaT);
                        bNom = !bNom;                                       // 現状反転？
                        break;
                    case 2:
                        int iF = int.Parse(sQ[1]);
                        if (iF == 1) { lstaS.Add(sQ[2][0]); }
                        if (iF == 2) { lstaE.Add(sQ[2][0]); }
                        break;
                }
            }

            System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
            sw.Start();

            // 解析
            if (!bNom) { lstcS.Reverse(); }
            lstaS.Reverse();
            List<char> lstAl = new List<char>();
            lstAl.AddRange(lstaS);
            lstAl.AddRange(lstcS);
            lstAl.AddRange(lstaE);
            string sOut = new string(lstAl.ToArray());                  // char配列string変換

            // 出力
            System.Console.WriteLine("{0}", sOut.ToString().Trim());

            sw.Stop();
#if DEBUG
            Console.WriteLine();
            Console.WriteLine("{0}", sw.Elapsed.ToString());
            Console.WriteLine("続行するには何かキーを押してください．．．");
            Console.ReadKey();
#endif
    }

}