답안 #95997 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
95997	2019-02-05T03:54:28 Z	youngyojun	Triangles (CEOI18_tri)	C++11	100 / 100	29 ms	2372 KB

#include "trilib.h"
#include <bits/stdc++.h>
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define befv(V) ((V)[sz(V)-2])
#define allv(V) ((V).begin()),((V).end())
#define sorv(V) sort(allv(V))
#define univ(V) (V).erase(unique(allv(V)),(V).end())
using namespace std;

int ccw(int a, int b, int c) {
	if(a == b || b == c || c == a) return 0;
	return is_clockwise(a, b, c) ? 1 : -1;
}

vector<int> LV, RV;

int N;

void f(vector<int> &V) {
	sort(V.begin()+1, V.end(), [&](int a, int b) {
		return 0 < ccw(V[0], a, b);
	});
	vector<int> T;
	for(int v : V) {
		for(; 1 < sz(T) && ccw(befv(T), T.back(), v) <= 0; T.pop_back());
		T.eb(v);
	}
	swap(V, T);
}

int main() {
	N = get_n();

	LV.eb(1); RV.eb(2);
	for(int i = 3; i <= N; i++)
		(0 < ccw(1, 2, i) ? LV : RV).eb(i);
	f(LV); f(RV);

	int al = 0, ar = 0, bl = 0, br = 0, ln = sz(LV), rn = sz(RV);
	for(bool flag;;) {
		flag = false;
		for(; 0 < ccw(LV[al], RV[ar], LV[(al+1)%ln]); al=(al+1)%ln) flag = true;
		for(; 0 < ccw(LV[al], RV[ar], RV[(ar-1+rn)%rn]); ar=(ar-1+rn)%rn) flag = true;
		if(!flag) break;
	}
	for(bool flag;;) {
		flag = false;
		for(; ccw(LV[bl], RV[br], LV[(bl-1+ln)%ln]) < 0; bl=(bl-1+ln)%ln) flag = true;
		for(; ccw(LV[bl], RV[br], RV[(br+1)%rn]) < 0; br=(br+1)%rn) flag = true;
		if(!flag) break;
	}

	vector<int> Ans;
	for(int i = br;; i = (i+1)%rn) {
		Ans.eb(RV[i]);
		if(i == ar) break;
	}
	for(int i = al;; i = (i+1)%ln) {
		Ans.eb(LV[i]);
		if(i == bl) break;
	}

	sorv(Ans); univ(Ans);
	give_answer(sz(Ans));
	return 0;
}

Subtask #1
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	504 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 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	380 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	380 KB	Output is correct
17	Correct	2 ms	256 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	360 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	256 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	256 KB	Output is correct
26	Correct	2 ms	256 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	504 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 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	380 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	380 KB	Output is correct
17	Correct	2 ms	256 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	360 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	256 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	256 KB	Output is correct
26	Correct	2 ms	256 KB	Output is correct
27	Correct	2 ms	252 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	2 ms	376 KB	Output is correct
36	Correct	2 ms	376 KB	Output is correct
37	Correct	2 ms	376 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	2 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	2 ms	376 KB	Output is correct
43	Correct	2 ms	376 KB	Output is correct
44	Correct	2 ms	376 KB	Output is correct
45	Correct	2 ms	376 KB	Output is correct
46	Correct	2 ms	376 KB	Output is correct
47	Correct	2 ms	376 KB	Output is correct
48	Correct	1 ms	376 KB	Output is correct
49	Correct	2 ms	376 KB	Output is correct
50	Correct	2 ms	376 KB	Output is correct
51	Correct	2 ms	376 KB	Output is correct
52	Correct	2 ms	376 KB	Output is correct

Subtask #3
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	504 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 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	380 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	380 KB	Output is correct
17	Correct	2 ms	256 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	360 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	256 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	256 KB	Output is correct
26	Correct	2 ms	256 KB	Output is correct
27	Correct	2 ms	252 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	2 ms	376 KB	Output is correct
36	Correct	2 ms	376 KB	Output is correct
37	Correct	2 ms	376 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	2 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	2 ms	376 KB	Output is correct
43	Correct	2 ms	376 KB	Output is correct
44	Correct	2 ms	376 KB	Output is correct
45	Correct	2 ms	376 KB	Output is correct
46	Correct	2 ms	376 KB	Output is correct
47	Correct	2 ms	376 KB	Output is correct
48	Correct	1 ms	376 KB	Output is correct
49	Correct	2 ms	376 KB	Output is correct
50	Correct	2 ms	376 KB	Output is correct
51	Correct	2 ms	376 KB	Output is correct
52	Correct	2 ms	376 KB	Output is correct
53	Correct	2 ms	256 KB	Output is correct
54	Correct	2 ms	376 KB	Output is correct
55	Correct	2 ms	376 KB	Output is correct
56	Correct	2 ms	376 KB	Output is correct
57	Correct	2 ms	376 KB	Output is correct
58	Correct	11 ms	1020 KB	Output is correct
59	Correct	10 ms	1016 KB	Output is correct
60	Correct	10 ms	1016 KB	Output is correct
61	Correct	11 ms	1016 KB	Output is correct
62	Correct	11 ms	1144 KB	Output is correct
63	Correct	11 ms	1116 KB	Output is correct
64	Correct	11 ms	1016 KB	Output is correct
65	Correct	11 ms	1144 KB	Output is correct
66	Correct	10 ms	1016 KB	Output is correct
67	Correct	10 ms	1020 KB	Output is correct
68	Correct	11 ms	1016 KB	Output is correct
69	Correct	11 ms	1016 KB	Output is correct
70	Correct	10 ms	1016 KB	Output is correct
71	Correct	10 ms	1016 KB	Output is correct
72	Correct	11 ms	888 KB	Output is correct
73	Correct	10 ms	1016 KB	Output is correct
74	Correct	10 ms	1016 KB	Output is correct
75	Correct	10 ms	1016 KB	Output is correct
76	Correct	10 ms	1016 KB	Output is correct
77	Correct	8 ms	1016 KB	Output is correct
78	Correct	9 ms	1016 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	252 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 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	376 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	376 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	380 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	256 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	252 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	256 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct

Subtask #5
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	504 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 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	380 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	380 KB	Output is correct
17	Correct	2 ms	256 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	360 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	256 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	256 KB	Output is correct
26	Correct	2 ms	256 KB	Output is correct
27	Correct	2 ms	252 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	2 ms	376 KB	Output is correct
36	Correct	2 ms	376 KB	Output is correct
37	Correct	2 ms	376 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	2 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	2 ms	376 KB	Output is correct
43	Correct	2 ms	376 KB	Output is correct
44	Correct	2 ms	376 KB	Output is correct
45	Correct	2 ms	376 KB	Output is correct
46	Correct	2 ms	376 KB	Output is correct
47	Correct	2 ms	376 KB	Output is correct
48	Correct	1 ms	376 KB	Output is correct
49	Correct	2 ms	376 KB	Output is correct
50	Correct	2 ms	376 KB	Output is correct
51	Correct	2 ms	376 KB	Output is correct
52	Correct	2 ms	376 KB	Output is correct
53	Correct	2 ms	256 KB	Output is correct
54	Correct	2 ms	376 KB	Output is correct
55	Correct	2 ms	376 KB	Output is correct
56	Correct	2 ms	376 KB	Output is correct
57	Correct	2 ms	376 KB	Output is correct
58	Correct	11 ms	1020 KB	Output is correct
59	Correct	10 ms	1016 KB	Output is correct
60	Correct	10 ms	1016 KB	Output is correct
61	Correct	11 ms	1016 KB	Output is correct
62	Correct	11 ms	1144 KB	Output is correct
63	Correct	11 ms	1116 KB	Output is correct
64	Correct	11 ms	1016 KB	Output is correct
65	Correct	11 ms	1144 KB	Output is correct
66	Correct	10 ms	1016 KB	Output is correct
67	Correct	10 ms	1020 KB	Output is correct
68	Correct	11 ms	1016 KB	Output is correct
69	Correct	11 ms	1016 KB	Output is correct
70	Correct	10 ms	1016 KB	Output is correct
71	Correct	10 ms	1016 KB	Output is correct
72	Correct	11 ms	888 KB	Output is correct
73	Correct	10 ms	1016 KB	Output is correct
74	Correct	10 ms	1016 KB	Output is correct
75	Correct	10 ms	1016 KB	Output is correct
76	Correct	10 ms	1016 KB	Output is correct
77	Correct	8 ms	1016 KB	Output is correct
78	Correct	9 ms	1016 KB	Output is correct
79	Correct	2 ms	256 KB	Output is correct
80	Correct	2 ms	376 KB	Output is correct
81	Correct	2 ms	252 KB	Output is correct
82	Correct	2 ms	256 KB	Output is correct
83	Correct	2 ms	376 KB	Output is correct
84	Correct	2 ms	376 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	376 KB	Output is correct
88	Correct	2 ms	376 KB	Output is correct
89	Correct	2 ms	256 KB	Output is correct
90	Correct	2 ms	376 KB	Output is correct
91	Correct	2 ms	256 KB	Output is correct
92	Correct	2 ms	376 KB	Output is correct
93	Correct	2 ms	256 KB	Output is correct
94	Correct	2 ms	256 KB	Output is correct
95	Correct	2 ms	380 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	256 KB	Output is correct
100	Correct	2 ms	376 KB	Output is correct
101	Correct	2 ms	252 KB	Output is correct
102	Correct	2 ms	376 KB	Output is correct
103	Correct	2 ms	256 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	376 KB	Output is correct
107	Correct	2 ms	376 KB	Output is correct
108	Correct	2 ms	256 KB	Output is correct
109	Correct	2 ms	376 KB	Output is correct
110	Correct	26 ms	2144 KB	Output is correct
111	Correct	27 ms	2040 KB	Output is correct
112	Correct	27 ms	2040 KB	Output is correct
113	Correct	26 ms	2172 KB	Output is correct
114	Correct	29 ms	2348 KB	Output is correct
115	Correct	29 ms	2324 KB	Output is correct
116	Correct	29 ms	2312 KB	Output is correct
117	Correct	29 ms	2372 KB	Output is correct
118	Correct	26 ms	2040 KB	Output is correct
119	Correct	27 ms	2040 KB	Output is correct
120	Correct	27 ms	2040 KB	Output is correct
121	Correct	26 ms	2040 KB	Output is correct
122	Correct	26 ms	2040 KB	Output is correct
123	Correct	27 ms	2168 KB	Output is correct
124	Correct	26 ms	2168 KB	Output is correct
125	Correct	27 ms	2040 KB	Output is correct
126	Correct	27 ms	2168 KB	Output is correct
127	Correct	26 ms	2040 KB	Output is correct
128	Correct	27 ms	2040 KB	Output is correct
129	Correct	19 ms	2260 KB	Output is correct
130	Correct	22 ms	2164 KB	Output is correct

답안 #95997

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 25.0 / 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
25.0 / 25.0