/**
 * This file is part of the 1st Solidity Gas Golfing Contest.
 *
 * This work is licensed under Creative Commons Attribution ShareAlike 3.0.
 * https://creativecommons.org/licenses/by-sa/3.0/
 */

pragma solidity 0.4.24;

contract Unique {
    /**
     * @dev Removes all but the first occurrence of each element from a list of
     *      integers, preserving the order of original elements, and returns the list.
     *
     * The input list may be of any length.
     *
     * @param input The list of integers to uniquify.
     * @return The input list, with any duplicate elements removed.
     */
    function uniquify(uint[] input) public pure returns(uint[] ret) {
    }
}