Print all elements that appear more than once.

Difficulty: Hard

Phase: 4 · Basic Arrays

XP Reward: 30 XP

Topics: Basic Arrays, Hard

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

Problem Description

Given N followed by N integers, print all elements that appear more than once 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 4 1

Output: 1 2

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