#660. Are all different?
If all elements are different, print `Yes`, otherwise print `No`.
### Input
The first line has n, the second line has n integers separated by spaces.
### Output
`Yes` or `No`.
Examples
Input
2 8 2
Output
Yes
Input
4 6 3 5 12
Output
Yes
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.