SGJP / Kuznia

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import sys


def get_lines():
    first = True
    lines = []
    for line in sys.stdin:
        if first:
            lines.append(line)
            first = False
        if line == '\n':
            first = True
    return lines


if __name__ == '__main__':
    lines = get_lines()
    sys.stdout.write(''.join(lines))