Missing Numbers

You are given a list of whole numbers in ascending order. You need to find which numbers are missing in the sequence.

Task

Create a program that takes in a list of numbers and outputs the missing numbers in the sequence separated by spaces.

Input Format

The first input denotes the length of the list (N). The next N lines contain the list elements as integers.

Output Format

A string containing a space-separated list of the missing numbers.

Sample Input

5
2
4
5
7
8

Sample Output

3 6

Explanation

The input list is missing the numbers 3 and 6.

Solutions

Language	Solution
C	not available
CPP	not available
C#	not available
Python	available
Java	not available
Ruby	not available
Swift	not available