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: Time Limit Exceeded)

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        // 入力データの取得
        Scanner scanner = new Scanner(System.in);
        String inputStringData = scanner.nextLine();
        String inputRepeatData = scanner.nextLine();
        int repeatNumber = Integer.parseInt(inputRepeatData);
        String[][] inputOperationRow = new String[repeatNumber][3];
        for (int index = 0; index < repeatNumber; index++) {
            String inputOperationRowBeforeEdit = scanner.nextLine();
            inputOperationRow[index] = inputOperationRowBeforeEdit.split(" ");
        }
        scanner.close();

        // 文字列の加工
        for (String[] editData : inputOperationRow) {
            int operation1 = Integer.parseInt(editData[0]);
            switch (operation1) {
                case 1:
                    char[] inputCharArray = inputStringData.toCharArray();
                    inputStringData = null;
                    char[] reverseCharArray = new char[inputCharArray.length];
                    int reverseIndex = 0;
                    for (int index = inputCharArray.length - 1; index >= 0; index--) {
                        reverseCharArray[reverseIndex] = inputCharArray[index];
                        reverseIndex++;
                    }
                    for (int index = 0; index < reverseCharArray.length; index++) {
                        inputCharArray[index] = reverseCharArray[index];
                    }
                    inputStringData = new String(inputCharArray);
                    inputCharArray = null;
                    reverseCharArray = null;
                    break;
                case 2:
                    int operation2 = Integer.parseInt(editData[1]);
                    switch (operation2) {
                        case 1:
                            inputStringData = editData[2] + inputStringData;
                            break;
                        case 2:
                            inputStringData = inputStringData + editData[2];
                            break;
                        default:
                            break;
                    }
                    break;
                default:
                    break;
            }
            editData = null;
            System.gc();
        }

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

    }

}