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.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;

internal static class CR
{
    public static string GetText() { return Console.ReadLine(); }
    public static List<string> GetTexts() { return Console.ReadLine().Split(' ').ToList(); }
    public static long GetLong() { return long.Parse(Console.ReadLine()); }
    public static List<long> GetLongs() { return Console.ReadLine().Split(' ').Select(x => long.Parse(x)).ToList(); }
}

namespace AtCoder.D
{
    public class Program
    {
        public static string S { get; private set; }
        public static long Q { get; private set; }

        public static void Main() { var r = GetResult(); Debug.WriteLine(r); Console.Write(r); }

        private static object GetResult()
        {
            S = CR.GetText();
            Q = CR.GetLong();

            var sbPrefix = new StringBuilder();
            var sbSuffix = new StringBuilder();

            var isReverse = false;
            for (int i = 0; i < Q; i++)
            {
                var q = CR.GetTexts();
                if (q[0] == "1")
                {
                    isReverse = !isReverse;
                    var temp = sbPrefix;
                    sbPrefix = sbSuffix;
                    sbSuffix = temp;
                    continue;
                }

                if (q[1] == "1")
                {
                    sbPrefix.Append(q[2]);
                }
                else
                {
                    sbSuffix.Append(q[2]);
                }
            }
            return new string(sbPrefix.ToString().Reverse().ToArray())
                + (isReverse ? new string(S.Reverse().ToArray()) : S)
                + sbSuffix.ToString();
        }
    }
}