Problem:
Score : 300 points

Problem Statement

You are given an integer sequence of length n, a_1, ..., a_n.
Let us consider performing the following n operations on an empty sequence b.

The i-th operation is as follows:

Append a_i to the end of b.

Reverse the order of the elements in b.

Find the sequence b obtained after these n operations.

Constraints

1 \leq n \leq 2\times 10^5

0 \leq a_i \leq 10^9

n and a_i are integers.

Input

Input is given from Standard Input in the following format:

n
a_1 a_2 ... a_n

Output

Print n integers in a line with spaces in between.
The i-th integer should be b_i.

Sample Input 1

4
1 2 3 4

Sample Output 1

4 2 1 3

After step 1 of the first operation, b becomes: 1.

After step 2 of the first operation, b becomes: 1.

After step 1 of the second operation, b becomes: 1, 2.

After step 2 of the second operation, b becomes: 2, 1.

After step 1 of the third operation, b becomes: 2, 1, 3.

After step 2 of the third operation, b becomes: 3, 1, 2.

After step 1 of the fourth operation, b becomes: 3, 1, 2, 4.

After step 2 of the fourth operation, b becomes: 4, 2, 1, 3.

Thus, the answer is 4 2 1 3.

Sample Input 2

3
1 2 3

Sample Output 2

3 1 2

As shown above in Sample Output 1, b becomes 3, 1, 2 after step 2 of the third operation. Thus, the answer is 3 1 2.

Sample Input 3

1
1000000000

Sample Output 3

1000000000

Sample Input 4

6
0 6 7 6 7 0

Sample Output 4

0 6 6 0 7 7

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>

int main(){
  long n = 0;
  long a[200000] = {};
  long b[500000] = {};
  long i = 0;
  scanf("%ld",&n);
  for(i=0;i<n;i++){
    scanf("%ld",&a[i]);
  }
  for(i=0;i<500000;i++){
    b[i] = -1;
  }
  b[249999]=a[1];
  b[250000]=a[0];
  
  for(i=2;i<n;i++){
    if(i % 2 == 0){
      b[250000 + i/2] = a[i];
    }else{
      b[249999 - i/2] = a[i];
    }
  }
  if(n%2==0){
    for(i=0;i<500000;i++){
      if(b[i] != -1){
        printf("%ld ",b[i]);
      }
    }
  }else{
    for(i=499999;i>0;i--){
      if(b[i] != -1){
        printf("%ld ",b[i]);
      }
    }
  }
  return 0;
}