import io


def eatlines(s, n):
    """
    >>> eatlines("1\\n2", 1)
    '2'
    >>> eatlines("1\\n2", 2)
    ''
    >>> eatlines("1\\n2", 3)
    ''
    >>> eatlines("1\\n2\\n3", 1)
    '2\\n3'
    """
    cs = io.StringIO(s)

    for line in cs:
        n -= 1
        if n == 0:
            return cs.read()
    return ''