Submission #145885

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
145885	2019-08-21T10:15:25 Z	nvmdava	Triangles (CEOI18_tri)	C++17	75 / 100	46 ms	4232 KB

#include <bits/stdc++.h>
#include "trilib.h"
 
#define ff first
#define ss second
#define ll long long
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
 
int n, root, t;

class Compare{
	public:
		bool operator()(const int& lhs, const int& rhs){
			return is_clockwise(root, lhs, rhs);
		}
};

set<int, Compare> le, ri;
vector<int> hull, hull2;
int main() {
 
	n = get_n();
 
 	root = 1;
 	t = 2;
 	for(int i = 3; i <= n; i++){
 		if(is_clockwise(t, root, i))
 		 	ri.insert(i);
 		else 
 			le.insert(i);
 	}
 	for(int x : le)
 		hull.push_back(x);
 	hull.push_back(root);
 	for(int x : ri)
 		hull.push_back(x);
 	hull.push_back(t);
 	while(true){
 		for(int i = 0; i < hull.size(); i++){
 			int l = i - 1;
 			int r = i + 1;
 			if(l == -1) l = hull.size() - 1;
 			if(r == hull.size()) r = 0;
 			l = hull[l];
 			r = hull[r];

 			if(is_clockwise(l, hull[i], r))
 				hull2.push_back(hull[i]);
 		}
 		swap(hull2, hull);
 		if(hull.size() == hull2.size()) break;
 		hull2.clear();
 	}
 	give_answer(hull.size());
}

Compilation message

tri.cpp: In function 'int main()':
tri.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = 0; i < hull.size(); i++){
                   ~~^~~~~~~~~~~~~
tri.cpp:44:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(r == hull.size()) r = 0;
        ~~^~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	3 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	2 ms	380 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	256 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct

Subtask #2
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	3 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	2 ms	380 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	256 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	256 KB	Output is correct
29	Correct	2 ms	256 KB	Output is correct
30	Correct	2 ms	252 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	3 ms	376 KB	Output is correct
33	Correct	3 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	3 ms	376 KB	Output is correct
36	Correct	2 ms	380 KB	Output is correct
37	Correct	3 ms	376 KB	Output is correct
38	Correct	3 ms	376 KB	Output is correct
39	Correct	3 ms	376 KB	Output is correct
40	Correct	3 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	3 ms	376 KB	Output is correct
43	Correct	3 ms	376 KB	Output is correct
44	Correct	3 ms	376 KB	Output is correct
45	Correct	3 ms	376 KB	Output is correct
46	Correct	3 ms	376 KB	Output is correct
47	Correct	2 ms	376 KB	Output is correct
48	Correct	2 ms	376 KB	Output is correct
49	Correct	2 ms	380 KB	Output is correct
50	Correct	2 ms	380 KB	Output is correct
51	Correct	3 ms	380 KB	Output is correct
52	Correct	2 ms	376 KB	Output is correct

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	3 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	2 ms	380 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	256 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	256 KB	Output is correct
29	Correct	2 ms	256 KB	Output is correct
30	Correct	2 ms	252 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	3 ms	376 KB	Output is correct
33	Correct	3 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	3 ms	376 KB	Output is correct
36	Correct	2 ms	380 KB	Output is correct
37	Correct	3 ms	376 KB	Output is correct
38	Correct	3 ms	376 KB	Output is correct
39	Correct	3 ms	376 KB	Output is correct
40	Correct	3 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	3 ms	376 KB	Output is correct
43	Correct	3 ms	376 KB	Output is correct
44	Correct	3 ms	376 KB	Output is correct
45	Correct	3 ms	376 KB	Output is correct
46	Correct	3 ms	376 KB	Output is correct
47	Correct	2 ms	376 KB	Output is correct
48	Correct	2 ms	376 KB	Output is correct
49	Correct	2 ms	380 KB	Output is correct
50	Correct	2 ms	380 KB	Output is correct
51	Correct	3 ms	380 KB	Output is correct
52	Correct	2 ms	376 KB	Output is correct
53	Correct	2 ms	376 KB	Output is correct
54	Correct	2 ms	256 KB	Output is correct
55	Correct	2 ms	376 KB	Output is correct
56	Correct	2 ms	256 KB	Output is correct
57	Correct	2 ms	376 KB	Output is correct
58	Correct	17 ms	1528 KB	Output is correct
59	Correct	16 ms	1488 KB	Output is correct
60	Correct	15 ms	1400 KB	Output is correct
61	Correct	16 ms	1400 KB	Output is correct
62	Correct	15 ms	1472 KB	Output is correct
63	Correct	16 ms	1784 KB	Output is correct
64	Correct	16 ms	1784 KB	Output is correct
65	Correct	17 ms	1784 KB	Output is correct
66	Correct	17 ms	1784 KB	Output is correct
67	Correct	16 ms	1656 KB	Output is correct
68	Correct	16 ms	1784 KB	Output is correct
69	Correct	16 ms	1784 KB	Output is correct
70	Correct	16 ms	1660 KB	Output is correct
71	Correct	16 ms	1656 KB	Output is correct
72	Correct	15 ms	1704 KB	Output is correct
73	Correct	17 ms	1656 KB	Output is correct
74	Correct	16 ms	1784 KB	Output is correct
75	Correct	16 ms	1656 KB	Output is correct
76	Correct	15 ms	1656 KB	Output is correct
77	Correct	12 ms	1656 KB	Output is correct
78	Correct	12 ms	1656 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	404 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct

Subtask #5
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	3 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	2 ms	256 KB	Output is correct
15	Correct	2 ms	380 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	2 ms	256 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	256 KB	Output is correct
29	Correct	2 ms	256 KB	Output is correct
30	Correct	2 ms	252 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	3 ms	376 KB	Output is correct
33	Correct	3 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	3 ms	376 KB	Output is correct
36	Correct	2 ms	380 KB	Output is correct
37	Correct	3 ms	376 KB	Output is correct
38	Correct	3 ms	376 KB	Output is correct
39	Correct	3 ms	376 KB	Output is correct
40	Correct	3 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	3 ms	376 KB	Output is correct
43	Correct	3 ms	376 KB	Output is correct
44	Correct	3 ms	376 KB	Output is correct
45	Correct	3 ms	376 KB	Output is correct
46	Correct	3 ms	376 KB	Output is correct
47	Correct	2 ms	376 KB	Output is correct
48	Correct	2 ms	376 KB	Output is correct
49	Correct	2 ms	380 KB	Output is correct
50	Correct	2 ms	380 KB	Output is correct
51	Correct	3 ms	380 KB	Output is correct
52	Correct	2 ms	376 KB	Output is correct
53	Correct	2 ms	376 KB	Output is correct
54	Correct	2 ms	256 KB	Output is correct
55	Correct	2 ms	376 KB	Output is correct
56	Correct	2 ms	256 KB	Output is correct
57	Correct	2 ms	376 KB	Output is correct
58	Correct	17 ms	1528 KB	Output is correct
59	Correct	16 ms	1488 KB	Output is correct
60	Correct	15 ms	1400 KB	Output is correct
61	Correct	16 ms	1400 KB	Output is correct
62	Correct	15 ms	1472 KB	Output is correct
63	Correct	16 ms	1784 KB	Output is correct
64	Correct	16 ms	1784 KB	Output is correct
65	Correct	17 ms	1784 KB	Output is correct
66	Correct	17 ms	1784 KB	Output is correct
67	Correct	16 ms	1656 KB	Output is correct
68	Correct	16 ms	1784 KB	Output is correct
69	Correct	16 ms	1784 KB	Output is correct
70	Correct	16 ms	1660 KB	Output is correct
71	Correct	16 ms	1656 KB	Output is correct
72	Correct	15 ms	1704 KB	Output is correct
73	Correct	17 ms	1656 KB	Output is correct
74	Correct	16 ms	1784 KB	Output is correct
75	Correct	16 ms	1656 KB	Output is correct
76	Correct	15 ms	1656 KB	Output is correct
77	Correct	12 ms	1656 KB	Output is correct
78	Correct	12 ms	1656 KB	Output is correct
79	Correct	2 ms	376 KB	Output is correct
80	Correct	2 ms	376 KB	Output is correct
81	Correct	2 ms	256 KB	Output is correct
82	Correct	2 ms	256 KB	Output is correct
83	Correct	2 ms	256 KB	Output is correct
84	Correct	2 ms	256 KB	Output is correct
85	Correct	2 ms	376 KB	Output is correct
86	Correct	2 ms	376 KB	Output is correct
87	Correct	2 ms	404 KB	Output is correct
88	Correct	2 ms	376 KB	Output is correct
89	Correct	2 ms	376 KB	Output is correct
90	Correct	2 ms	256 KB	Output is correct
91	Correct	2 ms	376 KB	Output is correct
92	Correct	2 ms	256 KB	Output is correct
93	Correct	2 ms	376 KB	Output is correct
94	Correct	2 ms	376 KB	Output is correct
95	Correct	2 ms	376 KB	Output is correct
96	Correct	2 ms	376 KB	Output is correct
97	Correct	2 ms	376 KB	Output is correct
98	Correct	2 ms	376 KB	Output is correct
99	Correct	2 ms	376 KB	Output is correct
100	Correct	2 ms	376 KB	Output is correct
101	Correct	2 ms	376 KB	Output is correct
102	Correct	2 ms	376 KB	Output is correct
103	Correct	2 ms	376 KB	Output is correct
104	Correct	2 ms	376 KB	Output is correct
105	Correct	2 ms	376 KB	Output is correct
106	Correct	2 ms	256 KB	Output is correct
107	Correct	3 ms	376 KB	Output is correct
108	Correct	2 ms	256 KB	Output is correct
109	Correct	2 ms	256 KB	Output is correct
110	Correct	43 ms	4080 KB	Output is correct
111	Correct	43 ms	4088 KB	Output is correct
112	Correct	43 ms	4088 KB	Output is correct
113	Correct	44 ms	4088 KB	Output is correct
114	Correct	42 ms	4212 KB	Output is correct
115	Correct	41 ms	4212 KB	Output is correct
116	Correct	42 ms	4232 KB	Output is correct
117	Correct	43 ms	4212 KB	Output is correct
118	Correct	42 ms	4088 KB	Output is correct
119	Correct	44 ms	3960 KB	Output is correct
120	Correct	42 ms	4088 KB	Output is correct
121	Correct	42 ms	4088 KB	Output is correct
122	Correct	41 ms	4088 KB	Output is correct
123	Correct	43 ms	4088 KB	Output is correct
124	Correct	44 ms	4000 KB	Output is correct
125	Correct	43 ms	3960 KB	Output is correct
126	Correct	46 ms	4088 KB	Output is correct
127	Correct	41 ms	4088 KB	Output is correct
128	Correct	43 ms	4088 KB	Output is correct
129	Incorrect	28 ms	4084 KB	Output isn't correct
130	Halted	0 ms	0 KB	-

Submission #145885

Compilation message

Subtask #1 15.0 / 15.0

Subtask #2 20.0 / 20.0

Subtask #3 20.0 / 20.0

Subtask #4 20.0 / 20.0

Subtask #5 0 / 25.0

Subtask #1
15.0 / 15.0

Subtask #2
20.0 / 20.0

Subtask #3
20.0 / 20.0

Subtask #4
20.0 / 20.0

Subtask #5
0 / 25.0