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 Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;
import java.util.ArrayList;

public class Main {

    public static void main(String[] args) {

        // 入力データの取得
        Scanner scanner = new Scanner(System.in);
        StringBuilder inputStringData = new StringBuilder(scanner.nextLine());
        int repeatNum = scanner.nextInt();
        boolean reverseFlag = false;
        int frontCount = 0;
        int backCount = 0;
        ArrayList<String> addFrontList = new ArrayList<>();
        ArrayList<String> addBackList = new ArrayList<>();
        for (int count = 0; count < repeatNum; count++) {
            if (scanner.nextInt() == 1) {
                reverseFlag = !reverseFlag;
            } else {
                int judgmentNum = scanner.nextInt();
                if (!reverseFlag) {
                    if (judgmentNum == 1) {
                        addFrontList.add(scanner.next());
                        frontCount++;
                    } else {
                        addBackList.add(scanner.next());
                        backCount++;
                    }
                } else {
                    if (judgmentNum == 1) {
                        addBackList.add(scanner.next());
                        backCount++;
                    } else {
                        addFrontList.add(scanner.next());
                        frontCount++;
                    }
                }
            }
        }
        scanner.close();

        // 結果の処理
        StringBuilder displayStringBuilder = new StringBuilder();
        if (reverseFlag) {
            for (int index = backCount - 1; index >= 0; index--) {
                displayStringBuilder.append(addBackList.get(index));
            }
            displayStringBuilder.append(inputStringData.toString());
            for (int index = 0; index < addFrontList.size(); index++) {
                displayStringBuilder.append(addFrontList.get(index));
            }
        } else {
            for (int index = frontCount - 1; index >= 0; index--) {
                displayStringBuilder.append(addFrontList.get(index));
            }
            displayStringBuilder.append(inputStringData.toString());
            for (int index = 0; index < addBackList.size(); index++) {
                displayStringBuilder.append(addBackList.get(index));
            }
        }

        // 結果の出力
        System.out.println(displayStringBuilder.toString());

    }

}