Problems
Delete digits
Delete digits
One positive integer n is given. Remove from this number all digits 3 and 9, leaving the order of other digits the same.
For example, the number 539013 will be transformed to 501.
Input data
One positive integer n~(1 \le n \le 10^{18}).
Output data
Remove from the number n all digits 3 and 9, keeping the relative order of other digits.
Examples
Input example #1
539013
Output example #1
501