#! /usr/bin/env python3

# --------------------------------------------------------------------
import sys, os, re, StringIO as sio

# --------------------------------------------------------------------
def _main():
    contents = sys.stdin.read()
    output   = sio.StringIO()
    depth    = 0

    while contents:
        m = re.search(r'^(.*?)(\(\*|\*\))', contents, re.S)
        if m is None: break
        if depth == 0:
            output.write(m.group(1))
        if m.group(2) == '(*':
            depth += 1
        else:
            if depth > 0:
                depth -= 1
            else:
                output.write(m.group(2))
        contents = contents[len(m.group(0)):]

    if depth == 0:
        output.write(contents)
    output = [x.rstrip() for x in output.getvalue().splitlines()]
    while output and not output[0]:
        output.pop(0)
    while output and not output[-1]:
        output.pop()
    i = 0
    while i < len(output):
        if not output[i]:
            while i+1 < len(output) and not output[i+1]:
                output.pop(i+1)
        i += 1

    print('\n'.join(output) + '\n')

# --------------------------------------------------------------------
if __name__ == '__main__':
    _main()