oj.uz

Submission #954949

# Submission time Handle Problem Language Result Execution time Memory
954949 2024-03-29T00:21:34 Z ThegeekKnight16 Triangles (CEOI18_tri) C++17
100 / 100
 65 ms 2200 KB 
#include <bits/stdc++.h>
using namespace std;
#include "trilib.h"
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void ordena(vector<int> &v)
{
    if (v.size() <= 1) return;
    vector<int> l, r;
    for (int i = 1; i < v.size(); i++)
    {
        // cerr << "||1 " << v[0] << " " << v[i] << '\n';
        if (is_clockwise(1, v[0], v[i])) l.push_back(v[i]);
        else r.push_back(v[i]);
    }
    ordena(l); ordena(r);
    l.push_back(v[0]);
    v = l;
    for (auto x : r) v.push_back(x);
}

int main()
{
    int N = get_n();
    vector<int> points(N-1);
    iota(points.begin(), points.end(), 2);
    shuffle(points.begin(), points.end(), rng);
    ordena(points);
    vector<int> hull; bool putOne = 0;
    for (int i = 0; i < N-1; i++)
    {
        hull.push_back(points[i]);
        // cerr << "i: " << i << "||1 " << points[i] << " " << points[(i+1)%(N-1)] << '\n';
        if (!putOne && is_clockwise(1, points[i], points[(i+1)%(N-1)])) {putOne = 1; hull.push_back(1);}
    }

    bool removedSome = 1;
    for (int t = 0; t <= N && removedSome; t++)
    {
        removedSome = 0;
        for (int i = 0; i < hull.size(); i++)
        {
            int tam = hull.size();
            int ant = hull[(i+tam-1)%tam];
            int prox = hull[(i+1)%tam];
            if (!is_clockwise(hull[i], ant, prox)) {hull.erase(hull.begin()+i); --i; removedSome = 1;}
        }
    }

    give_answer((int)hull.size());
}

Compilation message

tri.cpp: In function 'void ordena(std::vector<int>&)':
tri.cpp:10:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for (int i = 1; i < v.size(); i++)
      |                     ~~^~~~~~~~~~
tri.cpp: In function 'int main()':
tri.cpp:41:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for (int i = 0; i < hull.size(); i++)
      |                         ~~^~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 600 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 12 ms 860 KB Output is correct
59 Correct 12 ms 860 KB Output is correct
60 Correct 12 ms 984 KB Output is correct
61 Correct 12 ms 856 KB Output is correct
62 Correct 8 ms 856 KB Output is correct
63 Correct 7 ms 860 KB Output is correct
64 Correct 7 ms 860 KB Output is correct
65 Correct 7 ms 1116 KB Output is correct
66 Correct 11 ms 860 KB Output is correct
67 Correct 12 ms 980 KB Output is correct
68 Correct 11 ms 860 KB Output is correct
69 Correct 12 ms 860 KB Output is correct
70 Correct 12 ms 860 KB Output is correct
71 Correct 12 ms 860 KB Output is correct
72 Correct 12 ms 1028 KB Output is correct
73 Correct 12 ms 860 KB Output is correct
74 Correct 16 ms 1112 KB Output is correct
75 Correct 12 ms 856 KB Output is correct
76 Correct 11 ms 860 KB Output is correct
77 Correct 7 ms 860 KB Output is correct
78 Correct 8 ms 860 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 0 ms 408 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 352 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 600 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 12 ms 860 KB Output is correct
59 Correct 12 ms 860 KB Output is correct
60 Correct 12 ms 984 KB Output is correct
61 Correct 12 ms 856 KB Output is correct
62 Correct 8 ms 856 KB Output is correct
63 Correct 7 ms 860 KB Output is correct
64 Correct 7 ms 860 KB Output is correct
65 Correct 7 ms 1116 KB Output is correct
66 Correct 11 ms 860 KB Output is correct
67 Correct 12 ms 980 KB Output is correct
68 Correct 11 ms 860 KB Output is correct
69 Correct 12 ms 860 KB Output is correct
70 Correct 12 ms 860 KB Output is correct
71 Correct 12 ms 860 KB Output is correct
72 Correct 12 ms 1028 KB Output is correct
73 Correct 12 ms 860 KB Output is correct
74 Correct 16 ms 1112 KB Output is correct
75 Correct 12 ms 856 KB Output is correct
76 Correct 11 ms 860 KB Output is correct
77 Correct 7 ms 860 KB Output is correct
78 Correct 8 ms 860 KB Output is correct
79 Correct 0 ms 344 KB Output is correct
80 Correct 0 ms 348 KB Output is correct
81 Correct 1 ms 348 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 1 ms 344 KB Output is correct
87 Correct 1 ms 348 KB Output is correct
88 Correct 0 ms 348 KB Output is correct
89 Correct 0 ms 348 KB Output is correct
90 Correct 1 ms 348 KB Output is correct
91 Correct 1 ms 348 KB Output is correct
92 Correct 0 ms 348 KB Output is correct
93 Correct 0 ms 348 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 1 ms 348 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Correct 0 ms 348 KB Output is correct
98 Correct 1 ms 344 KB Output is correct
99 Correct 0 ms 408 KB Output is correct
100 Correct 1 ms 348 KB Output is correct
101 Correct 0 ms 348 KB Output is correct
102 Correct 0 ms 348 KB Output is correct
103 Correct 1 ms 348 KB Output is correct
104 Correct 1 ms 352 KB Output is correct
105 Correct 1 ms 360 KB Output is correct
106 Correct 1 ms 356 KB Output is correct
107 Correct 1 ms 568 KB Output is correct
108 Correct 0 ms 360 KB Output is correct
109 Correct 0 ms 348 KB Output is correct
110 Correct 55 ms 1884 KB Output is correct
111 Correct 65 ms 1884 KB Output is correct
112 Correct 56 ms 2200 KB Output is correct
113 Correct 55 ms 1884 KB Output is correct
114 Correct 26 ms 1776 KB Output is correct
115 Correct 20 ms 1872 KB Output is correct
116 Correct 21 ms 2008 KB Output is correct
117 Correct 20 ms 1916 KB Output is correct
118 Correct 64 ms 1920 KB Output is correct
119 Correct 54 ms 1880 KB Output is correct
120 Correct 56 ms 1800 KB Output is correct
121 Correct 59 ms 1796 KB Output is correct
122 Correct 64 ms 1832 KB Output is correct
123 Correct 59 ms 2004 KB Output is correct
124 Correct 55 ms 1884 KB Output is correct
125 Correct 54 ms 1884 KB Output is correct
126 Correct 56 ms 1884 KB Output is correct
127 Correct 55 ms 1800 KB Output is correct
128 Correct 55 ms 2008 KB Output is correct
129 Correct 19 ms 1912 KB Output is correct
130 Correct 18 ms 1948 KB Output is correct