Submission #73603

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
73603	2018-08-28T13:47:17 Z	zscoder	Triangles (CEOI18_tri)	C++17	100 / 100	45 ms	2208 KB

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include "trilib.h"

using namespace std;
using namespace __gnu_pbds;
 
#define fi first
#define se second
#define mp make_pair
#define pb push_back
 
typedef long long ll;
typedef pair<int,int> ii;
typedef vector<int> vi;
typedef long double ld; 
typedef tree<ii, null_type, less<ii>, rb_tree_tag, tree_order_statistics_node_update> pbds;

int nn; int god;
bool is_cl(int x, int y, int z)
{
	return is_clockwise(x+1,y+1,z+1);
}
bool cmp(int x, int y)
{
	return !is_cl(god,x,y);
}
int ans;

vector<int> ez_convex_hull(vector<int> vec)
{
	vector<int> S;
	for(int i=0;i<vec.size();i++)
	{
		int u=vec[i];
		while(S.size()>=2&&is_cl(S[int(S.size())-2], S[int(S.size())-1], u))
		{
			S.pop_back();
		}
		S.pb(u);
	}
	return S;
}

int main()
{
	nn = get_n();
	vi U, D; god=0;
	for(int i=2;i<nn;i++)
	{
		if(is_cl(0,1,i))
		{
			U.pb(i);
		}
		else
		{
			D.pb(i);
		}
	}
	stable_sort(U.begin(),U.end(),cmp);
	stable_sort(D.begin(),D.end(),cmp);
	D.pb(0); U.pb(1);
	/*
	for(int x:U)
	{
		cerr<<x<<' ';
	}
	cerr<<'\n';
	for(int x:D)
	{
		cerr<<x<<' ';
	}
	cerr<<'\n';
	*/
	U = ez_convex_hull(U); D = ez_convex_hull(D);
	vector<int> combined;
	for(int v:U) combined.pb(v);
	for(int v:D) combined.pb(v);
	/*
	for(int v:combined) 
	{
		cerr<<v<<' ';
	}
	cerr<<'\n';
	*/
	combined = ez_convex_hull(combined);
	deque<int> dq;
	for(int v:combined) 
	{
		dq.pb(v);
	}
	while(1)
	{
		bool quit=1;
		int x = dq.back(); dq.pop_back();
		if(is_cl(dq.back(), x, dq.front()))
		{
			quit=0;
		}
		else dq.pb(x);
		x = dq.front(); dq.pop_front();
		if(!is_cl(dq.front(), x, dq.back()))
		{
			quit=0;
		}
		else dq.push_front(x);
		if(quit) break;
	}
	give_answer(dq.size());
}

Compilation message

tri.cpp: In function 'std::vector<int> ez_convex_hull(std::vector<int>)':
tri.cpp:34:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<vec.size();i++)
              ~^~~~~~~~~~~

Subtask #1
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	3 ms	484 KB	Output is correct
3	Correct	3 ms	528 KB	Output is correct
4	Correct	3 ms	528 KB	Output is correct
5	Correct	3 ms	528 KB	Output is correct
6	Correct	3 ms	528 KB	Output is correct
7	Correct	3 ms	528 KB	Output is correct
8	Correct	3 ms	528 KB	Output is correct
9	Correct	2 ms	528 KB	Output is correct
10	Correct	2 ms	528 KB	Output is correct
11	Correct	3 ms	528 KB	Output is correct
12	Correct	2 ms	528 KB	Output is correct
13	Correct	3 ms	528 KB	Output is correct
14	Correct	4 ms	528 KB	Output is correct
15	Correct	3 ms	528 KB	Output is correct
16	Correct	2 ms	528 KB	Output is correct
17	Correct	3 ms	528 KB	Output is correct
18	Correct	4 ms	528 KB	Output is correct
19	Correct	2 ms	528 KB	Output is correct
20	Correct	3 ms	528 KB	Output is correct
21	Correct	3 ms	528 KB	Output is correct
22	Correct	3 ms	528 KB	Output is correct
23	Correct	5 ms	528 KB	Output is correct
24	Correct	3 ms	528 KB	Output is correct
25	Correct	3 ms	528 KB	Output is correct
26	Correct	3 ms	528 KB	Output is correct

Subtask #2
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	3 ms	484 KB	Output is correct
3	Correct	3 ms	528 KB	Output is correct
4	Correct	3 ms	528 KB	Output is correct
5	Correct	3 ms	528 KB	Output is correct
6	Correct	3 ms	528 KB	Output is correct
7	Correct	3 ms	528 KB	Output is correct
8	Correct	3 ms	528 KB	Output is correct
9	Correct	2 ms	528 KB	Output is correct
10	Correct	2 ms	528 KB	Output is correct
11	Correct	3 ms	528 KB	Output is correct
12	Correct	2 ms	528 KB	Output is correct
13	Correct	3 ms	528 KB	Output is correct
14	Correct	4 ms	528 KB	Output is correct
15	Correct	3 ms	528 KB	Output is correct
16	Correct	2 ms	528 KB	Output is correct
17	Correct	3 ms	528 KB	Output is correct
18	Correct	4 ms	528 KB	Output is correct
19	Correct	2 ms	528 KB	Output is correct
20	Correct	3 ms	528 KB	Output is correct
21	Correct	3 ms	528 KB	Output is correct
22	Correct	3 ms	528 KB	Output is correct
23	Correct	5 ms	528 KB	Output is correct
24	Correct	3 ms	528 KB	Output is correct
25	Correct	3 ms	528 KB	Output is correct
26	Correct	3 ms	528 KB	Output is correct
27	Correct	2 ms	528 KB	Output is correct
28	Correct	2 ms	528 KB	Output is correct
29	Correct	3 ms	528 KB	Output is correct
30	Correct	3 ms	552 KB	Output is correct
31	Correct	2 ms	552 KB	Output is correct
32	Correct	3 ms	552 KB	Output is correct
33	Correct	2 ms	572 KB	Output is correct
34	Correct	3 ms	748 KB	Output is correct
35	Correct	3 ms	748 KB	Output is correct
36	Correct	3 ms	748 KB	Output is correct
37	Correct	4 ms	748 KB	Output is correct
38	Correct	2 ms	748 KB	Output is correct
39	Correct	3 ms	748 KB	Output is correct
40	Correct	3 ms	748 KB	Output is correct
41	Correct	3 ms	748 KB	Output is correct
42	Correct	3 ms	748 KB	Output is correct
43	Correct	3 ms	748 KB	Output is correct
44	Correct	3 ms	748 KB	Output is correct
45	Correct	3 ms	748 KB	Output is correct
46	Correct	3 ms	748 KB	Output is correct
47	Correct	3 ms	748 KB	Output is correct
48	Correct	3 ms	748 KB	Output is correct
49	Correct	3 ms	748 KB	Output is correct
50	Correct	3 ms	748 KB	Output is correct
51	Correct	2 ms	748 KB	Output is correct
52	Correct	2 ms	748 KB	Output is correct

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	3 ms	484 KB	Output is correct
3	Correct	3 ms	528 KB	Output is correct
4	Correct	3 ms	528 KB	Output is correct
5	Correct	3 ms	528 KB	Output is correct
6	Correct	3 ms	528 KB	Output is correct
7	Correct	3 ms	528 KB	Output is correct
8	Correct	3 ms	528 KB	Output is correct
9	Correct	2 ms	528 KB	Output is correct
10	Correct	2 ms	528 KB	Output is correct
11	Correct	3 ms	528 KB	Output is correct
12	Correct	2 ms	528 KB	Output is correct
13	Correct	3 ms	528 KB	Output is correct
14	Correct	4 ms	528 KB	Output is correct
15	Correct	3 ms	528 KB	Output is correct
16	Correct	2 ms	528 KB	Output is correct
17	Correct	3 ms	528 KB	Output is correct
18	Correct	4 ms	528 KB	Output is correct
19	Correct	2 ms	528 KB	Output is correct
20	Correct	3 ms	528 KB	Output is correct
21	Correct	3 ms	528 KB	Output is correct
22	Correct	3 ms	528 KB	Output is correct
23	Correct	5 ms	528 KB	Output is correct
24	Correct	3 ms	528 KB	Output is correct
25	Correct	3 ms	528 KB	Output is correct
26	Correct	3 ms	528 KB	Output is correct
27	Correct	2 ms	528 KB	Output is correct
28	Correct	2 ms	528 KB	Output is correct
29	Correct	3 ms	528 KB	Output is correct
30	Correct	3 ms	552 KB	Output is correct
31	Correct	2 ms	552 KB	Output is correct
32	Correct	3 ms	552 KB	Output is correct
33	Correct	2 ms	572 KB	Output is correct
34	Correct	3 ms	748 KB	Output is correct
35	Correct	3 ms	748 KB	Output is correct
36	Correct	3 ms	748 KB	Output is correct
37	Correct	4 ms	748 KB	Output is correct
38	Correct	2 ms	748 KB	Output is correct
39	Correct	3 ms	748 KB	Output is correct
40	Correct	3 ms	748 KB	Output is correct
41	Correct	3 ms	748 KB	Output is correct
42	Correct	3 ms	748 KB	Output is correct
43	Correct	3 ms	748 KB	Output is correct
44	Correct	3 ms	748 KB	Output is correct
45	Correct	3 ms	748 KB	Output is correct
46	Correct	3 ms	748 KB	Output is correct
47	Correct	3 ms	748 KB	Output is correct
48	Correct	3 ms	748 KB	Output is correct
49	Correct	3 ms	748 KB	Output is correct
50	Correct	3 ms	748 KB	Output is correct
51	Correct	2 ms	748 KB	Output is correct
52	Correct	2 ms	748 KB	Output is correct
53	Correct	3 ms	748 KB	Output is correct
54	Correct	3 ms	748 KB	Output is correct
55	Correct	3 ms	748 KB	Output is correct
56	Correct	2 ms	748 KB	Output is correct
57	Correct	4 ms	748 KB	Output is correct
58	Correct	13 ms	976 KB	Output is correct
59	Correct	13 ms	976 KB	Output is correct
60	Correct	18 ms	976 KB	Output is correct
61	Correct	13 ms	976 KB	Output is correct
62	Correct	13 ms	1148 KB	Output is correct
63	Correct	13 ms	1148 KB	Output is correct
64	Correct	12 ms	1148 KB	Output is correct
65	Correct	12 ms	1248 KB	Output is correct
66	Correct	12 ms	1248 KB	Output is correct
67	Correct	11 ms	1248 KB	Output is correct
68	Correct	14 ms	1248 KB	Output is correct
69	Correct	14 ms	1248 KB	Output is correct
70	Correct	14 ms	1248 KB	Output is correct
71	Correct	13 ms	1248 KB	Output is correct
72	Correct	13 ms	1248 KB	Output is correct
73	Correct	12 ms	1248 KB	Output is correct
74	Correct	12 ms	1248 KB	Output is correct
75	Correct	13 ms	1248 KB	Output is correct
76	Correct	19 ms	1248 KB	Output is correct
77	Correct	9 ms	1248 KB	Output is correct
78	Correct	8 ms	1248 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	1248 KB	Output is correct
2	Correct	2 ms	1248 KB	Output is correct
3	Correct	2 ms	1248 KB	Output is correct
4	Correct	2 ms	1248 KB	Output is correct
5	Correct	3 ms	1248 KB	Output is correct
6	Correct	3 ms	1248 KB	Output is correct
7	Correct	3 ms	1248 KB	Output is correct
8	Correct	3 ms	1248 KB	Output is correct
9	Correct	3 ms	1248 KB	Output is correct
10	Correct	3 ms	1248 KB	Output is correct
11	Correct	3 ms	1248 KB	Output is correct
12	Correct	3 ms	1248 KB	Output is correct
13	Correct	2 ms	1248 KB	Output is correct
14	Correct	3 ms	1248 KB	Output is correct
15	Correct	2 ms	1248 KB	Output is correct
16	Correct	2 ms	1248 KB	Output is correct
17	Correct	2 ms	1248 KB	Output is correct
18	Correct	3 ms	1248 KB	Output is correct
19	Correct	2 ms	1248 KB	Output is correct
20	Correct	2 ms	1248 KB	Output is correct
21	Correct	2 ms	1248 KB	Output is correct
22	Correct	1 ms	1248 KB	Output is correct
23	Correct	2 ms	1248 KB	Output is correct
24	Correct	2 ms	1248 KB	Output is correct
25	Correct	3 ms	1248 KB	Output is correct
26	Correct	3 ms	1248 KB	Output is correct

Subtask #5
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	3 ms	484 KB	Output is correct
3	Correct	3 ms	528 KB	Output is correct
4	Correct	3 ms	528 KB	Output is correct
5	Correct	3 ms	528 KB	Output is correct
6	Correct	3 ms	528 KB	Output is correct
7	Correct	3 ms	528 KB	Output is correct
8	Correct	3 ms	528 KB	Output is correct
9	Correct	2 ms	528 KB	Output is correct
10	Correct	2 ms	528 KB	Output is correct
11	Correct	3 ms	528 KB	Output is correct
12	Correct	2 ms	528 KB	Output is correct
13	Correct	3 ms	528 KB	Output is correct
14	Correct	4 ms	528 KB	Output is correct
15	Correct	3 ms	528 KB	Output is correct
16	Correct	2 ms	528 KB	Output is correct
17	Correct	3 ms	528 KB	Output is correct
18	Correct	4 ms	528 KB	Output is correct
19	Correct	2 ms	528 KB	Output is correct
20	Correct	3 ms	528 KB	Output is correct
21	Correct	3 ms	528 KB	Output is correct
22	Correct	3 ms	528 KB	Output is correct
23	Correct	5 ms	528 KB	Output is correct
24	Correct	3 ms	528 KB	Output is correct
25	Correct	3 ms	528 KB	Output is correct
26	Correct	3 ms	528 KB	Output is correct
27	Correct	2 ms	528 KB	Output is correct
28	Correct	2 ms	528 KB	Output is correct
29	Correct	3 ms	528 KB	Output is correct
30	Correct	3 ms	552 KB	Output is correct
31	Correct	2 ms	552 KB	Output is correct
32	Correct	3 ms	552 KB	Output is correct
33	Correct	2 ms	572 KB	Output is correct
34	Correct	3 ms	748 KB	Output is correct
35	Correct	3 ms	748 KB	Output is correct
36	Correct	3 ms	748 KB	Output is correct
37	Correct	4 ms	748 KB	Output is correct
38	Correct	2 ms	748 KB	Output is correct
39	Correct	3 ms	748 KB	Output is correct
40	Correct	3 ms	748 KB	Output is correct
41	Correct	3 ms	748 KB	Output is correct
42	Correct	3 ms	748 KB	Output is correct
43	Correct	3 ms	748 KB	Output is correct
44	Correct	3 ms	748 KB	Output is correct
45	Correct	3 ms	748 KB	Output is correct
46	Correct	3 ms	748 KB	Output is correct
47	Correct	3 ms	748 KB	Output is correct
48	Correct	3 ms	748 KB	Output is correct
49	Correct	3 ms	748 KB	Output is correct
50	Correct	3 ms	748 KB	Output is correct
51	Correct	2 ms	748 KB	Output is correct
52	Correct	2 ms	748 KB	Output is correct
53	Correct	3 ms	748 KB	Output is correct
54	Correct	3 ms	748 KB	Output is correct
55	Correct	3 ms	748 KB	Output is correct
56	Correct	2 ms	748 KB	Output is correct
57	Correct	4 ms	748 KB	Output is correct
58	Correct	13 ms	976 KB	Output is correct
59	Correct	13 ms	976 KB	Output is correct
60	Correct	18 ms	976 KB	Output is correct
61	Correct	13 ms	976 KB	Output is correct
62	Correct	13 ms	1148 KB	Output is correct
63	Correct	13 ms	1148 KB	Output is correct
64	Correct	12 ms	1148 KB	Output is correct
65	Correct	12 ms	1248 KB	Output is correct
66	Correct	12 ms	1248 KB	Output is correct
67	Correct	11 ms	1248 KB	Output is correct
68	Correct	14 ms	1248 KB	Output is correct
69	Correct	14 ms	1248 KB	Output is correct
70	Correct	14 ms	1248 KB	Output is correct
71	Correct	13 ms	1248 KB	Output is correct
72	Correct	13 ms	1248 KB	Output is correct
73	Correct	12 ms	1248 KB	Output is correct
74	Correct	12 ms	1248 KB	Output is correct
75	Correct	13 ms	1248 KB	Output is correct
76	Correct	19 ms	1248 KB	Output is correct
77	Correct	9 ms	1248 KB	Output is correct
78	Correct	8 ms	1248 KB	Output is correct
79	Correct	2 ms	1248 KB	Output is correct
80	Correct	2 ms	1248 KB	Output is correct
81	Correct	2 ms	1248 KB	Output is correct
82	Correct	2 ms	1248 KB	Output is correct
83	Correct	3 ms	1248 KB	Output is correct
84	Correct	3 ms	1248 KB	Output is correct
85	Correct	3 ms	1248 KB	Output is correct
86	Correct	3 ms	1248 KB	Output is correct
87	Correct	3 ms	1248 KB	Output is correct
88	Correct	3 ms	1248 KB	Output is correct
89	Correct	3 ms	1248 KB	Output is correct
90	Correct	3 ms	1248 KB	Output is correct
91	Correct	2 ms	1248 KB	Output is correct
92	Correct	3 ms	1248 KB	Output is correct
93	Correct	2 ms	1248 KB	Output is correct
94	Correct	2 ms	1248 KB	Output is correct
95	Correct	2 ms	1248 KB	Output is correct
96	Correct	3 ms	1248 KB	Output is correct
97	Correct	2 ms	1248 KB	Output is correct
98	Correct	2 ms	1248 KB	Output is correct
99	Correct	2 ms	1248 KB	Output is correct
100	Correct	1 ms	1248 KB	Output is correct
101	Correct	2 ms	1248 KB	Output is correct
102	Correct	2 ms	1248 KB	Output is correct
103	Correct	3 ms	1248 KB	Output is correct
104	Correct	3 ms	1248 KB	Output is correct
105	Correct	2 ms	1248 KB	Output is correct
106	Correct	2 ms	1248 KB	Output is correct
107	Correct	2 ms	1248 KB	Output is correct
108	Correct	2 ms	1248 KB	Output is correct
109	Correct	2 ms	1248 KB	Output is correct
110	Correct	33 ms	1532 KB	Output is correct
111	Correct	31 ms	1532 KB	Output is correct
112	Correct	30 ms	1532 KB	Output is correct
113	Correct	36 ms	1532 KB	Output is correct
114	Correct	38 ms	2208 KB	Output is correct
115	Correct	36 ms	2208 KB	Output is correct
116	Correct	31 ms	2208 KB	Output is correct
117	Correct	42 ms	2208 KB	Output is correct
118	Correct	37 ms	2208 KB	Output is correct
119	Correct	45 ms	2208 KB	Output is correct
120	Correct	35 ms	2208 KB	Output is correct
121	Correct	34 ms	2208 KB	Output is correct
122	Correct	37 ms	2208 KB	Output is correct
123	Correct	33 ms	2208 KB	Output is correct
124	Correct	33 ms	2208 KB	Output is correct
125	Correct	32 ms	2208 KB	Output is correct
126	Correct	37 ms	2208 KB	Output is correct
127	Correct	33 ms	2208 KB	Output is correct
128	Correct	34 ms	2208 KB	Output is correct
129	Correct	19 ms	2208 KB	Output is correct
130	Correct	18 ms	2208 KB	Output is correct

Submission #73603

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