#906. Edit distance
You get two words. Find the smallest number of operations (insert, delete or replace a letter) needed to turn one into the other.
### Input
Two lines.
### Output
A number.
Examples
Input
banana flower
Output
6
Input
apple castle
Output
3
💡 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.