#475. Remove the digit 4
You get n. Remove every digit 4 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
367072346253316342
Output
3670723625331632
Input
779783704184154544
Output
7797837018155
💡 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.