YuYuanPQ @ 2024-08-13 11:45:49
rt，是 [1,n] 还是 [1,10^9] ？
看到题解区好像都可以，请问是否有稍严谨的说明？
by yukimianyan @ 2024-08-13 11:51:20
by YuYuanPQ @ 2024-08-13 14:44:49
@yukimianyan thx.