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++14 (GCC 5.4.1) (judge verdict: Accepted)

#pragma GCC optimize ("O3", "unroll-loops")
#pragma GCC target ("avx")
#include <stdio.h>
#include <algorithm>

constexpr unsigned int N = 2e6;
char buffer[N];
char *ptr = buffer;
constexpr unsigned int S = 5e5;
char Out[2 * S];
char *left = Out + S, *right = Out + S;

int main(void){
    setvbuf(stdout, NULL, _IONBF, S);
    fread(buffer, sizeof(char), N, stdin);
    while('a' <= *ptr) *(right++) = *(ptr++);
    unsigned int q = 0;
    while(*(++ptr) >= '0') q = 10 * q + *ptr - '0';
    bool flag = false;
    while(q--){
        if(*(++ptr) == '1') flag = not flag;
        else{
            if((*(ptr += 2) == '1') ^ flag) *(--left) = *(ptr += 2);
            else *(right++) = *(ptr += 2); 
        }
        ptr++;
    }
    if(flag) std::reverse(left, right);
    fwrite(left, sizeof(char), right - left, stdout);
    return 0;
}