Check if all elements in an array are unique.

Difficulty: Medium

Phase: 4 · Basic Arrays

XP Reward: 20 XP

Topics: Basic Arrays, Medium

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

Problem Description

Check whether all elements in the array are unique (no duplicates). Print 'Yes' or 'No'. 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: 4 1 2 3 4

Output: Yes

Explanation: Sample execution for input 4 1 2 3 4