摘要: "1004传送门" 题意:求$\sum_{i=1}^n$ $\mid$a[i] x+b[i]$\mid$=C(其中1=1,所以$\mid$a[i] x+b[i]$\mid$的值在x= b[i]/a[i]左边时== a[i] x b[i],在x= b[i]/a[i]右边时==a[i] x+b[i],所 阅读全文
posted @ 2019-08-07 19:43 MekakuCityActor 阅读(257) 评论(1) 推荐(1) 编辑