Every second ticket

Problem

Support tickets are numbered in the order they arrive. A reviewer checks the 1st, 3rd, 5th ticket and so on. Print those ticket numbers on one line, separated by spaces.

Input, output and limits

Input: The first line has n, the number of values. The second line has the n values separated by spaces.
Output: The tickets at indexes 0, 2, 4, ... on one line, separated by spaces.
Constraints: 1 ≤ n ≤ 1000

Examples

Example

Input

5
11 12 13 14 15

Output

11 13 15

Indexes 0, 2 and 4.

Hints

Try the problem first. Open one hint at a time.

Hint 1

A slice can take a step: the third part of [start:stop:step].

Hint 2

Join the selected values with spaces.

Write your Python code, run it on the examples and submit it to hidden tests.

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