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Problem
Given an array, replace every even element (except the first) with the previous element. Print the modified array.
Input format
Input
input.txt
- An integer N (1 ≤ N ≤ 100) - N integers
Output format
Output
output.txt
- The modified array.
Example
input
6 1 2 3 4 5 6
output
1 1 3 3 5 5
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Sample cases (from the problem)
Sample Case 1
Input
6 1 2 3 4 5 6
Expected output
1 1 3 3 5 5
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