oj.uz

Submission #953604

# Submission time Handle Problem Language Result Execution time Memory
953604 2024-03-26T10:10:44 Z Desh03 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 171 ms 22352 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
 
using namespace std;
 
int construct(vector<vector<int>> p) {
    int n = p.size();
    vector<bool> vis(n);
    vector<vector<int>> b(n, vector<int> (n));
    for (int i = 0; i < n; i++) {
        if (vis[i]) continue;
        queue<int> q;
        q.push(i);
        vector<int> nodes;
        bool two = 0, three = 0;
        vector<bool> vis_(n);
        while (q.size()) {
            int u = q.front();
            q.pop();
            if (vis_[u]) continue;
            vis[u] = vis_[u] = 1;
            nodes.push_back(u);
            for (int j = 0; j < n; j++) {
                if (!vis_[j] && p[u][j]) {
                    if (vis[j]) return 0;    
                    q.push(j);
                }
            }
        }
        for (int u : nodes) {
            for (int j = 0; j < n; j++) {
                if ((!vis_[j] && p[u][j]) || (vis_[j] && !p[u][j])) {
                    return 0;
                } else if (vis_[j]) {
                    if (p[u][j] == 3) {
                        three = 1;
                    }
                    if (p[u][j] == 2) {
                        two = 1;
                    }
                }
            }
        }
        if (two && three) return 0;
        vector<vector<int>> trees;
        vector<bool> vis2(n);
        for (int u : nodes) {
            if (vis2[u]) continue;
            trees.push_back({});
            queue<int> q2;
            q2.push(u);
            while (q2.size()) {
                int v = q2.front();
                q2.pop();
                if (vis2[v]) continue;
                vis2[v] = 1;
                trees.back().push_back(v);
                for (int j = 0; j < n; j++) {
                    if (!vis2[j] && p[v][j] == 1) {
                        q2.push(j);
                    }
                }
            }
        }
        int sz = trees.size();
        if (two && sz < 3) return 0;
        if (three && sz < 4) return 0;
        for (int j = 0; j < sz; j++) {
            for (int k = 0; k < trees[j].size(); k++) {
                for (int l = k + 1; l < trees[j].size(); l++) {
                    if (p[trees[j][k]][trees[j][l]] != 1) {
                        return 0;
                    }
                }
            }
        }
        for (int j = 0; j < sz; j++) {
            int u = trees[j].back(), v = trees[(j + 1) % sz].back();
            if (u != v) {
                b[u][v] = b[v][u] = 1;
            }
            for (int k = 0; k < trees[j].size() - 1; k++) {
                u = trees[j][k], v = trees[j][k + 1];
                b[u][v] = b[v][u] = 1;
            }
        }
        if (three) {
            b[trees[0].back()][trees[2].back()] = b[trees[2].back()][trees[0].back()] = 1;
        }
    }
    build(b);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:69:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |             for (int k = 0; k < trees[j].size(); k++) {
      |                             ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:70:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |                 for (int l = k + 1; l < trees[j].size(); l++) {
      |                                     ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:82:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |             for (int k = 0; k < trees[j].size() - 1; k++) {
      |                             ~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 156 ms 22192 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 156 ms 22192 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 150 ms 22096 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 70 ms 13084 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5788 KB Output is correct
21 Correct 153 ms 22032 KB Output is correct
22 Correct 171 ms 22068 KB Output is correct
23 Correct 154 ms 22076 KB Output is correct
24 Correct 154 ms 22096 KB Output is correct
25 Correct 63 ms 12112 KB Output is correct
26 Correct 63 ms 12044 KB Output is correct
27 Correct 159 ms 21964 KB Output is correct
28 Correct 159 ms 22020 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1116 KB Output is correct
9 Correct 152 ms 22236 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 155 ms 22120 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 89 ms 13076 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 39 ms 5736 KB Output is correct
22 Correct 157 ms 22240 KB Output is correct
23 Correct 152 ms 22100 KB Output is correct
24 Correct 156 ms 22004 KB Output is correct
25 Correct 71 ms 12040 KB Output is correct
26 Correct 61 ms 12052 KB Output is correct
27 Correct 154 ms 22352 KB Output is correct
28 Correct 155 ms 22068 KB Output is correct
29 Correct 61 ms 12116 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 41 ms 5968 KB Output is correct
5 Correct 153 ms 21984 KB Output is correct
6 Correct 153 ms 22040 KB Output is correct
7 Correct 162 ms 22192 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 38 ms 5712 KB Output is correct
10 Correct 153 ms 22024 KB Output is correct
11 Correct 152 ms 22108 KB Output is correct
12 Correct 157 ms 21996 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 38 ms 5716 KB Output is correct
17 Correct 151 ms 22028 KB Output is correct
18 Correct 155 ms 22260 KB Output is correct
19 Correct 150 ms 22096 KB Output is correct
20 Correct 149 ms 22160 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 156 ms 22192 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 150 ms 22096 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 70 ms 13084 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5788 KB Output is correct
21 Correct 153 ms 22032 KB Output is correct
22 Correct 171 ms 22068 KB Output is correct
23 Correct 154 ms 22076 KB Output is correct
24 Correct 154 ms 22096 KB Output is correct
25 Correct 63 ms 12112 KB Output is correct
26 Correct 63 ms 12044 KB Output is correct
27 Correct 159 ms 21964 KB Output is correct
28 Correct 159 ms 22020 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1116 KB Output is correct
37 Correct 152 ms 22236 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1116 KB Output is correct
41 Correct 155 ms 22120 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 89 ms 13076 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 39 ms 5736 KB Output is correct
50 Correct 157 ms 22240 KB Output is correct
51 Correct 152 ms 22100 KB Output is correct
52 Correct 156 ms 22004 KB Output is correct
53 Correct 71 ms 12040 KB Output is correct
54 Correct 61 ms 12052 KB Output is correct
55 Correct 154 ms 22352 KB Output is correct
56 Correct 155 ms 22068 KB Output is correct
57 Correct 61 ms 12116 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 4 ms 860 KB Output is correct
61 Correct 69 ms 13596 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 38 ms 5716 KB Output is correct
66 Correct 61 ms 12296 KB Output is correct
67 Correct 64 ms 12060 KB Output is correct
68 Correct 61 ms 12116 KB Output is correct
69 Correct 59 ms 12112 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 156 ms 22192 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 150 ms 22096 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 70 ms 13084 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 5788 KB Output is correct
21 Correct 153 ms 22032 KB Output is correct
22 Correct 171 ms 22068 KB Output is correct
23 Correct 154 ms 22076 KB Output is correct
24 Correct 154 ms 22096 KB Output is correct
25 Correct 63 ms 12112 KB Output is correct
26 Correct 63 ms 12044 KB Output is correct
27 Correct 159 ms 21964 KB Output is correct
28 Correct 159 ms 22020 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1116 KB Output is correct
37 Correct 152 ms 22236 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1116 KB Output is correct
41 Correct 155 ms 22120 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 89 ms 13076 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 39 ms 5736 KB Output is correct
50 Correct 157 ms 22240 KB Output is correct
51 Correct 152 ms 22100 KB Output is correct
52 Correct 156 ms 22004 KB Output is correct
53 Correct 71 ms 12040 KB Output is correct
54 Correct 61 ms 12052 KB Output is correct
55 Correct 154 ms 22352 KB Output is correct
56 Correct 155 ms 22068 KB Output is correct
57 Correct 61 ms 12116 KB Output is correct
58 Correct 1 ms 600 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 41 ms 5968 KB Output is correct
62 Correct 153 ms 21984 KB Output is correct
63 Correct 153 ms 22040 KB Output is correct
64 Correct 162 ms 22192 KB Output is correct
65 Correct 1 ms 344 KB Output is correct
66 Correct 38 ms 5712 KB Output is correct
67 Correct 153 ms 22024 KB Output is correct
68 Correct 152 ms 22108 KB Output is correct
69 Correct 157 ms 21996 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 38 ms 5716 KB Output is correct
74 Correct 151 ms 22028 KB Output is correct
75 Correct 155 ms 22260 KB Output is correct
76 Correct 150 ms 22096 KB Output is correct
77 Correct 149 ms 22160 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 4 ms 860 KB Output is correct
81 Correct 69 ms 13596 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 38 ms 5716 KB Output is correct
86 Correct 61 ms 12296 KB Output is correct
87 Correct 64 ms 12060 KB Output is correct
88 Correct 61 ms 12116 KB Output is correct
89 Correct 59 ms 12112 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 344 KB Output is correct
92 Correct 3 ms 860 KB Output is correct
93 Correct 68 ms 13652 KB Output is correct
94 Correct 0 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 344 KB Output is correct
97 Correct 18 ms 3420 KB Output is correct
98 Correct 60 ms 12056 KB Output is correct
99 Correct 63 ms 12116 KB Output is correct
100 Correct 61 ms 12112 KB Output is correct
101 Correct 63 ms 12116 KB Output is correct
102 Incorrect 154 ms 22184 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -