你刚学OI就学这个！？
by si_zhong @ 2019-02-16 21:57:03
已AC..
tree.updated(tmpx, 1, n, 1, tmpy);应该改为tree.updated(id\[tmpx\], 1, n, 1, tmpy);
by Ciyang @ 2019-02-16 22:00:04
刚学OI就学树剖tql
by mcyqwq @ 2019-02-16 22:04:00
# 吓得我一激灵
by 李金埔 @ 2019-02-17 07:57:13
刚学OI的都是怪物
by Chiyoda_Momo @ 2019-02-17 12:11:37