• 강의실 배정과 같은 유형. 풀이는 그쪽 참고.

"""Solution code for "BOJ 1689. 겹치는 선분".

- Problem link: https://www.acmicpc.net/problem/1689
- Solution link: http://www.teferi.net/ps/problems/boj/1689

Tags: [Sweeping]
"""


import sys


RIGHT = 0
LEFT = 1


def main():
    N = int(sys.stdin.readline())
    coord = []
    for _ in range(N):
        s, e = [int(x) for x in sys.stdin.readline().split()]
        coord.append((s, LEFT))
        coord.append((e, RIGHT))

    count = 0
    answer = max(
        (count := count + (1 if type_ == LEFT else -1))
        for _, type_ in sorted(coord)
    )

    print(answer)


if __name__ == '__main__':
    main()