**麻烦大家帮我讲一下，我不想右转题解去 ~~QAQ~~**
by dhm0211 @ 2023-08-15 11:13:51
A会不会开小了?(不懂)
by 李翊辰2012 @ 2023-08-15 20:24:46
@[Eason201212](/user/1018996)
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### n<=1000呀
by dhm0211 @ 2023-08-17 15:35:43
@[dhm0211](/user/691433) 啊？你看清楚点
by wizard（偷开O2 @ 2023-08-30 00:08:17
@[dhm0211](/user/691433) n<=2e5，而且要开long long
by wizard（偷开O2 @ 2023-08-30 00:10:00
@[dhm0211](/user/691433) 数据这么大，你这方法绝对会T啊，这题二分做。
by wizard（偷开O2 @ 2023-08-30 00:11:25