Taco Sorted Unique Numbers

You are given a single line of space-separated integers. Your task is to remove duplicate integers and sort the remaining unique numbers in ascending order. If the input is an empty string, output an empty line.

Example:

• Input: "4 7 2 8 7 3 2" → Output: "2 3 4 7 8"
• Input: "1 1 1 1 1" → Output: "1"
• Input: "" → Output: ""

Read the input from standard input (stdin) and print the result to standard output (stdout).

inputFormat

The input consists of a single line containing space-separated integers. The line may be empty.

outputFormat

Output the sorted unique integers separated by a single space on one line. If the input is empty, output an empty line.

4 7 2 8 7 3 2

2 3 4 7 8