oj.uz

Submission #145898

# Submission time Handle Problem Language Result Execution time Memory
145898 2019-08-21T10:42:05 Z nvmdava Triangles (CEOI18_tri) C++17
75 / 100
 415 ms 66548 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;

map<ll, bool> lol;

bool get(ll a, ll b, ll c){
	ll en = a * 40001 * 40001 + b * 40001 + c;
	if(lol.find(en) != lol.end())
		return lol[en];
	return lol[en] = is_clockwise(a, b, c);
}

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


set<int, Compare> le, ri;
vector<int> hull, hull2;
int main() {
 
	n = get_n();
 
 	root = rng() % n + 1;
 	t = rng() % n + 1;
 	while(root == t){
 		root = rng() % n + 1;
 		t = rng() % n + 1;
 	}
 	
 	for(int i = 1; i <= n; i++){
 		if(root == i || t == i) continue;
 		if(get(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(get(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:57:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = 0; i < hull.size(); i++){
                   ~~^~~~~~~~~~~~~
tri.cpp:61:10: 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 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 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 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 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 372 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 #2
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 376 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 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 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 372 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
27 Correct 2 ms 256 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 3 ms 256 KB Output is correct
32 Correct 4 ms 760 KB Output is correct
33 Correct 4 ms 632 KB Output is correct
34 Correct 4 ms 632 KB Output is correct
35 Correct 4 ms 760 KB Output is correct
36 Correct 4 ms 632 KB Output is correct
37 Correct 4 ms 632 KB Output is correct
38 Correct 4 ms 632 KB Output is correct
39 Correct 4 ms 632 KB Output is correct
40 Correct 4 ms 632 KB Output is correct
41 Correct 4 ms 632 KB Output is correct
42 Correct 4 ms 632 KB Output is correct
43 Correct 4 ms 632 KB Output is correct
44 Correct 4 ms 632 KB Output is correct
45 Correct 4 ms 632 KB Output is correct
46 Correct 4 ms 632 KB Output is correct
47 Correct 4 ms 760 KB Output is correct
48 Correct 4 ms 760 KB Output is correct
49 Correct 4 ms 680 KB Output is correct
50 Correct 4 ms 760 KB Output is correct
51 Correct 4 ms 764 KB Output is correct
52 Correct 4 ms 760 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 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 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 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 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 372 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
27 Correct 2 ms 256 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 3 ms 256 KB Output is correct
32 Correct 4 ms 760 KB Output is correct
33 Correct 4 ms 632 KB Output is correct
34 Correct 4 ms 632 KB Output is correct
35 Correct 4 ms 760 KB Output is correct
36 Correct 4 ms 632 KB Output is correct
37 Correct 4 ms 632 KB Output is correct
38 Correct 4 ms 632 KB Output is correct
39 Correct 4 ms 632 KB Output is correct
40 Correct 4 ms 632 KB Output is correct
41 Correct 4 ms 632 KB Output is correct
42 Correct 4 ms 632 KB Output is correct
43 Correct 4 ms 632 KB Output is correct
44 Correct 4 ms 632 KB Output is correct
45 Correct 4 ms 632 KB Output is correct
46 Correct 4 ms 632 KB Output is correct
47 Correct 4 ms 760 KB Output is correct
48 Correct 4 ms 760 KB Output is correct
49 Correct 4 ms 680 KB Output is correct
50 Correct 4 ms 760 KB Output is correct
51 Correct 4 ms 764 KB Output is correct
52 Correct 4 ms 760 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 2 ms 376 KB Output is correct
55 Correct 2 ms 256 KB Output is correct
56 Correct 2 ms 376 KB Output is correct
57 Correct 2 ms 256 KB Output is correct
58 Correct 115 ms 16632 KB Output is correct
59 Correct 116 ms 16348 KB Output is correct
60 Correct 121 ms 16644 KB Output is correct
61 Correct 113 ms 16248 KB Output is correct
62 Correct 105 ms 15352 KB Output is correct
63 Correct 106 ms 15352 KB Output is correct
64 Correct 108 ms 15736 KB Output is correct
65 Correct 109 ms 15548 KB Output is correct
66 Correct 112 ms 16248 KB Output is correct
67 Correct 113 ms 16248 KB Output is correct
68 Correct 113 ms 16292 KB Output is correct
69 Correct 112 ms 16396 KB Output is correct
70 Correct 117 ms 16324 KB Output is correct
71 Correct 126 ms 16248 KB Output is correct
72 Correct 113 ms 16632 KB Output is correct
73 Correct 122 ms 16256 KB Output is correct
74 Correct 112 ms 16504 KB Output is correct
75 Correct 119 ms 16348 KB Output is correct
76 Correct 117 ms 16760 KB Output is correct
77 Correct 121 ms 22904 KB Output is correct
78 Correct 127 ms 23160 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 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 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 256 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 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 252 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 256 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 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 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 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 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 372 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
27 Correct 2 ms 256 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 3 ms 256 KB Output is correct
32 Correct 4 ms 760 KB Output is correct
33 Correct 4 ms 632 KB Output is correct
34 Correct 4 ms 632 KB Output is correct
35 Correct 4 ms 760 KB Output is correct
36 Correct 4 ms 632 KB Output is correct
37 Correct 4 ms 632 KB Output is correct
38 Correct 4 ms 632 KB Output is correct
39 Correct 4 ms 632 KB Output is correct
40 Correct 4 ms 632 KB Output is correct
41 Correct 4 ms 632 KB Output is correct
42 Correct 4 ms 632 KB Output is correct
43 Correct 4 ms 632 KB Output is correct
44 Correct 4 ms 632 KB Output is correct
45 Correct 4 ms 632 KB Output is correct
46 Correct 4 ms 632 KB Output is correct
47 Correct 4 ms 760 KB Output is correct
48 Correct 4 ms 760 KB Output is correct
49 Correct 4 ms 680 KB Output is correct
50 Correct 4 ms 760 KB Output is correct
51 Correct 4 ms 764 KB Output is correct
52 Correct 4 ms 760 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 2 ms 376 KB Output is correct
55 Correct 2 ms 256 KB Output is correct
56 Correct 2 ms 376 KB Output is correct
57 Correct 2 ms 256 KB Output is correct
58 Correct 115 ms 16632 KB Output is correct
59 Correct 116 ms 16348 KB Output is correct
60 Correct 121 ms 16644 KB Output is correct
61 Correct 113 ms 16248 KB Output is correct
62 Correct 105 ms 15352 KB Output is correct
63 Correct 106 ms 15352 KB Output is correct
64 Correct 108 ms 15736 KB Output is correct
65 Correct 109 ms 15548 KB Output is correct
66 Correct 112 ms 16248 KB Output is correct
67 Correct 113 ms 16248 KB Output is correct
68 Correct 113 ms 16292 KB Output is correct
69 Correct 112 ms 16396 KB Output is correct
70 Correct 117 ms 16324 KB Output is correct
71 Correct 126 ms 16248 KB Output is correct
72 Correct 113 ms 16632 KB Output is correct
73 Correct 122 ms 16256 KB Output is correct
74 Correct 112 ms 16504 KB Output is correct
75 Correct 119 ms 16348 KB Output is correct
76 Correct 117 ms 16760 KB Output is correct
77 Correct 121 ms 22904 KB Output is correct
78 Correct 127 ms 23160 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 256 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 256 KB Output is correct
86 Correct 2 ms 256 KB Output is correct
87 Correct 2 ms 256 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 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 252 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 256 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 376 KB Output is correct
107 Correct 2 ms 376 KB Output is correct
108 Correct 2 ms 376 KB Output is correct
109 Correct 2 ms 376 KB Output is correct
110 Correct 386 ms 46652 KB Output is correct
111 Correct 382 ms 46580 KB Output is correct
112 Correct 395 ms 47912 KB Output is correct
113 Correct 415 ms 46840 KB Output is correct
114 Correct 372 ms 45808 KB Output is correct
115 Correct 338 ms 45424 KB Output is correct
116 Correct 356 ms 45172 KB Output is correct
117 Correct 397 ms 45808 KB Output is correct
118 Correct 386 ms 47996 KB Output is correct
119 Correct 375 ms 47216 KB Output is correct
120 Correct 375 ms 46492 KB Output is correct
121 Correct 398 ms 48216 KB Output is correct
122 Correct 373 ms 46580 KB Output is correct
123 Correct 412 ms 46584 KB Output is correct
124 Correct 389 ms 46804 KB Output is correct
125 Correct 376 ms 46504 KB Output is correct
126 Correct 373 ms 47384 KB Output is correct
127 Correct 371 ms 46676 KB Output is correct
128 Correct 395 ms 47356 KB Output is correct
129 Incorrect 378 ms 66548 KB Output isn't correct
130 Halted 0 ms 0 KB -