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 Go (1.6) (judge verdict: Runtime Error)

package main

import (
	"bufio"
	"fmt"
	"os"
	"strings"
)

func getStdin() []string {
	stdin := bufio.NewScanner(os.Stdin)
	lines := []string{}
	for stdin.Scan() {
		if err := stdin.Err(); err != nil {
			fmt.Fprintln(os.Stderr, err)
		}
		lines = append(lines, stdin.Text())
	}
	return lines
}

func reverse(s string) string {
	rs := []rune(s)
	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
		rs[i], rs[j] = rs[j], rs[i]
	}
	return string(rs)
}

func main() {
	lines := getStdin()
	str := lines[0]

	queries := lines[2:]
	rev := 0
	for _, query := range queries {
		items := strings.Split(query, " ")
		t := items[0]
		if t == "1" {
			rev++
		} else if t == "2" {
			f := items[1]
			c := items[2]
			if (f == "1" && rev%2 == 0) || (f == "2" && rev%2 == 1) {
				str = c + str
			} else if (f == "2" && rev%2 == 0) || (f == "1" && rev%2 == 1) {
				str = str + c
			}
		}
	}
	if rev%2 == 1 {
		fmt.Println(reverse(str))
	} else {
		fmt.Println(str)
	}
}