2018-2019 ACM-ICPC Pacific Northwest Regional Contest (Div. 1)
在北美都出不了线啊?
Problem A
Solved by . 00:11 (+)
Problem B
Solved by . 01:06 (+)
Problem C
Solved by . 00:50 (+)
Problem D
Solved by . 00:16 (+)
Problem E
Solved by . 01:52 (+1)
Problem F
Solved by kblack. 02:30 (+3)
题意:给一堆矩形,求面积异或并。
题解:扫描线扫一扫,线段树区间翻转维护。这每次写这种扫描线都能把 i j 写倒也是把自己牛逼坏了。
Problem G
Solved by . 00:34 (+)
Problem H
Solved by . 01:20 (+)
Problem I
Solved by . 04:22 (+2)
Problem J
Solved by . 00:39 (+)
Problem K
Solved by . 02:31 (+1)
Problem L
Solved by kblack. 00:19 (+1)
温暖的签、咳咳、签到。
Problem M
Solved by . 01:10 (+)