import sys

def solve(lines):
    res = []

    for l in lines:
        numbers = []
        for w in l.split():
            number = ''.join(filter(lambda c: c.isdigit(), w))
            if number:
                numbers.append(number)
        if numbers:
            res.append(' '.join(numbers) + '\n')

    return res

if __name__ == "__main__":
    lines = []
    
    fp = sys.argv[1]
    with open("../TaskA02/polish_wiki_excerpt.in", encoding="utf-8") as f:
        lines = f.readlines()
    sol = solve(lines)
    with open("./polish_wiki_excerpt.out", 'w', encoding="utf-8") as f:
        f.writelines(sol)