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1A的人真强,列一下易错的地方,再贴几个数据

Posted by a280920481 at 2019-01-25 18:39:00 on Problem 3470 and last updated at 2019-07-14 15:14:55
1.时间复杂度必须是 O(m * logn),不能是O(m * logn * logn)(一开始我用归并树写就超时了)
2.数据类型要用long long
3.如果一个点在某个墙的延长线上,那么这个墙可以被撞上

数据:

Case 1:

4 15
10 0 10 40
0 40 40 40
10 10 50 10
40 50 40 10
15 12
12 35
35 38
38 15
55 9
55 10
55 11
40 55
39 55
41 55
-10000000000 42
-10000000000 40
-10000000000 38
-200000000000 5
-200000000000 50

Answer 1:
4
3
3
5




Case 2:

6 3
0 0 0 100
10 0 10 100
20 0 20 100
30 0 30 100
40 0 40 100
50 0 50 100
32 50
50 101
101 100

Answer 2:

0
0
0
1
0
2





Case 3:

2 2
0 0 0 10
0 0 10 0
15 0
15 1

Answer 3:

1
1





Case 4:

2 2
0 0 0 10
0 0 10 0
0 15
1 15

Answer 4:

1
1







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