#500. Remove the digit 7
You get n. Remove every digit 7 from n and print the number that is left. If nothing is left, print 0. (Leading zeros are dropped.)
### Input
One integer n (1 ≤ n ≤ 10¹⁸).
### Output
One integer.
Examples
Input
271077548283174200
Output
21054828314200
Input
596295186953748706
Output
5962951869534806
💡 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.