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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>

#define MODSIZE 300005

char queue[300005];

int main(){
  int head = 0;
  int tail = 0;
  int i,q;
  int com1,com2;
  char t[3];
  int rev = 0;

  scanf("%s", queue);
  scanf("%d", &q);
  tail++;
  for(i = 0;i < q;i++){
    scanf("%d", &com1);

    if(com1 == 1) rev++;

    else if(com1 == 2){
      scanf("%d", &com2);

      if(rev % 2 == 0){
      if(com2 == 1){
        head = (head + MODSIZE - 1) % MODSIZE;
        scanf("%s", t);
        queue[head] = t[0];
      }

      else if(com2 == 2){
        scanf("%s", t);
        queue[tail] = t[0];
        tail = (tail + 1) % MODSIZE;
      }
    }

    else{
      if(com2 == 2){
        head = (head + MODSIZE - 1) % MODSIZE;
        scanf("%s", t);
        queue[head] = t[0];
      }

      else if(com2 == 1){
        scanf("%s", t);
        queue[tail] = t[0];
        tail = (tail + 1) % MODSIZE;
      }
    }
    }
  }

  if(rev % 2 == 0){
    while(head != tail){
      printf("%c", queue[head]);
      head = (head + 1) % MODSIZE;
    }
  }

  else{
    while(head != tail){
      tail = (tail - 1 + MODSIZE) % MODSIZE;
      printf("%c", queue[tail]);
    }
  }

  printf("\n");

  return 0;
}