#808. The n-th prime
You get n. Find the n-th prime number (the 1st one is 2).
### Input
One integer n (1 ≤ n ≤ 2000).
### Output
A number.
Examples
Input
1425
Output
11897
Input
147
Output
853
💡 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.