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 Kotlin (1.0.0) (judge verdict: Time Limit Exceeded)

// Libraries
fun string(): String = readLine()!!
fun int(): Int = readLine()!!.toInt()
fun long(): Long = readLine()!!.toLong()
fun stringList(): List<String> = readLine()!!.split(" ")
fun intList(): List<Int> = readLine()!!.split(" ").map(String::toInt)
fun longList(): List<Long> = readLine()!!.split(" ").map(String::toLong)

// 最大公約数(ユーグリットの互除法)
tailrec fun gcd(a: Int, b: Int): Int = when {
    a < b -> gcd(b, a)
    b == 0 -> a
    else -> gcd(b, a % b)
}

fun min(a: Int, b: Int): Int = if(a < b) a else b
fun min(a: Long, b: Long): Long = if(a < b) a else b
fun max(a: Int, b: Int): Int = if(a > b) a else b
fun max(a: Long, b: Long): Long = if(a > b) a else b

fun main(args: Array<String>) {
    val S = string()
    val Q = int()

    val res = buildString {
        append(S)

        repeat(Q) {
            val query = stringList()
            val T = query[0].toInt()
            if(T == 1) reverse()
            else {
                val F = query[1].toInt()
                if(F == 1) insert(0, query[2])
                else append(query[2])
            }
        }
    }

    println(res)
}