#560. Every 3th character
You are given a text. Starting from the first character, join every 3th character (indexes 0, 3, 2·3, ...) and print the result.
### Input
One line of text.
### Output
One line.
Examples
Input
planet list madam kayak input
Output
pn smakaiu
Input
kayak keyboard school loop robot banana
Output
kakbrso oroba
💡 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.