Create a frequency array of numbers (count occurrence of each number).

Difficulty: Medium

Phase: 4 · Basic Arrays

XP Reward: 20 XP

Topics: Basic Arrays, Medium

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

Problem Description

Given N followed by N integers, print the frequency of each element in sorted order of elements, format 'elem: count' per line. 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: 5 1 2 2 3 1

Output: 1: 2 2: 2 3: 1

Explanation: Sample execution for input 5 1 2 2 3 1