Find the two non-repeating elements in an array where every other element appears twice.

Difficulty: Hard

Phase: 6 · Mixed Logical Challenges

XP Reward: 30 XP

Topics: Mixed Logical Challenges, Hard

Supported Languages: Python, JavaScript, C, C++, Java

Problem Description

Given array where all elements appear twice except two numbers, find those two numbers in ascending order separated by space. Input Format: Read input from standard input (stdin). Output Format: Print the result to standard output (stdout).

Constraints

-10^9 <= N <= 10^9

Examples

Example 1

Input: 6 1 2 3 2 1 4

Output: 3 4

Explanation: Sample execution for input 6 1 2 3 2 1 4