Question: There are two friends who want to send short secret messages to each other. They found a special coding system which can be solved only by these two boys.

The system: There is a string of characters. There is a special role of "*" sign which removes the previous letter in the string, k "*" signs remove k previous letters.

Solution: There are two strings 'E' and 'D'.'E' is the given encrypted text line. The program should check 'E' so that if next element of 'E' is not '*' then writes the element into decrypted 'D', if not than remove the last element of 'E' without adding the '*' sign.

Input specification
There is one line of text which can contain any letters and symbols. Maximum length of text can be 255 characters.

Output specification
Print the secret message without any '*' characters.