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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include <iostream>
#include <string>
#include <algorithm>

int main() 
{
    std::string s_initial;
    std::string extend_init;
    std::string extend_tail;

    std::cin >> s_initial;
    size_t n_q;
    std::cin >> n_q;
    bool flip = true;
    for (size_t i = 0; i < n_q; i++) {
        size_t type;
        std::cin >> type;
        if (type == 1) {
            flip = !flip;
        } else {
            size_t end;
            char c;
            std::cin >> end >> c ;
            if ((!flip && end == 1) || (flip && end == 2)) {
                extend_init.push_back(c);
            } else {
                extend_tail.push_back(c);
            }
        }
        
    }

    if (!flip) {
        std::reverse(extend_init.begin(), extend_init.end());
        std::cout << extend_init << s_initial << extend_tail << std::endl; 
    } else {
        std::reverse(s_initial.begin(), s_initial.end());
        std::reverse(extend_tail.begin(), extend_tail.end());
        std::cout << extend_tail << s_initial << extend_init << std::endl;
    }
    return 0;
}