oj.uz

Submission #953509

# Submission time Handle Problem Language Result Execution time Memory
953509 2024-03-26T04:58:38 Z Desh03 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 170 ms 24284 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 (p[i][j] == 2) two = 1;
                if (p[i][j] == 3) three = 1;
                if (!vis[j] && p[i][j]) {    
                    q.push(j);
                }
            }
        }
        for (int u : nodes) {
            for (int j = 0; j < n; j++) {
                if (!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;
                    }
                }
            }
        } 
        for (int j = 0; j < nodes.size(); j++) {
            for (int k = j + 1; k < nodes.size(); k++) {
                if (!p[nodes[j]][nodes[k]]) {
                    return 0;
                }
            }
        }
        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:45:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for (int j = 0; j < nodes.size(); j++) {
      |                         ~~^~~~~~~~~~~~~~
supertrees.cpp:46:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |             for (int k = j + 1; k < nodes.size(); k++) {
      |                                 ~~^~~~~~~~~~~~~~
supertrees.cpp:77:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |             for (int k = 0; k < trees[j].size(); k++) {
      |                             ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:78:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |                 for (int l = k + 1; l < trees[j].size(); l++) {
      |                                     ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:90:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |             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 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1356 KB Output is correct
7 Correct 162 ms 24024 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1356 KB Output is correct
7 Correct 162 ms 24024 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1188 KB Output is correct
13 Correct 160 ms 23948 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 72 ms 14712 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 408 KB Output is correct
20 Correct 40 ms 6228 KB Output is correct
21 Correct 164 ms 24144 KB Output is correct
22 Correct 161 ms 24144 KB Output is correct
23 Correct 168 ms 23984 KB Output is correct
24 Correct 162 ms 24188 KB Output is correct
25 Correct 69 ms 14164 KB Output is correct
26 Correct 65 ms 14212 KB Output is correct
27 Correct 168 ms 24120 KB Output is correct
28 Correct 160 ms 23892 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1372 KB Output is correct
9 Correct 159 ms 23892 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 600 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 161 ms 24124 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 932 KB Output is correct
17 Correct 70 ms 14580 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 41 ms 6168 KB Output is correct
22 Correct 162 ms 24120 KB Output is correct
23 Correct 166 ms 24260 KB Output is correct
24 Correct 166 ms 23976 KB Output is correct
25 Correct 67 ms 14160 KB Output is correct
26 Correct 69 ms 14196 KB Output is correct
27 Correct 161 ms 23892 KB Output is correct
28 Correct 166 ms 24088 KB Output is correct
29 Correct 73 ms 14160 KB Output is correct

Subtask #4
35.0 / 35.0

# 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 40 ms 6272 KB Output is correct
5 Correct 170 ms 24284 KB Output is correct
6 Correct 161 ms 23892 KB Output is correct
7 Correct 167 ms 24120 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 40 ms 6388 KB Output is correct
10 Correct 162 ms 24148 KB Output is correct
11 Correct 167 ms 24040 KB Output is correct
12 Correct 165 ms 24092 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 41 ms 6200 KB Output is correct
17 Correct 162 ms 24144 KB Output is correct
18 Correct 165 ms 24272 KB Output is correct
19 Correct 160 ms 24144 KB Output is correct
20 Correct 158 ms 23892 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1356 KB Output is correct
7 Correct 162 ms 24024 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1188 KB Output is correct
13 Correct 160 ms 23948 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 72 ms 14712 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 408 KB Output is correct
20 Correct 40 ms 6228 KB Output is correct
21 Correct 164 ms 24144 KB Output is correct
22 Correct 161 ms 24144 KB Output is correct
23 Correct 168 ms 23984 KB Output is correct
24 Correct 162 ms 24188 KB Output is correct
25 Correct 69 ms 14164 KB Output is correct
26 Correct 65 ms 14212 KB Output is correct
27 Correct 168 ms 24120 KB Output is correct
28 Correct 160 ms 23892 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 159 ms 23892 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 600 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 161 ms 24124 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 932 KB Output is correct
45 Correct 70 ms 14580 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 41 ms 6168 KB Output is correct
50 Correct 162 ms 24120 KB Output is correct
51 Correct 166 ms 24260 KB Output is correct
52 Correct 166 ms 23976 KB Output is correct
53 Correct 67 ms 14160 KB Output is correct
54 Correct 69 ms 14196 KB Output is correct
55 Correct 161 ms 23892 KB Output is correct
56 Correct 166 ms 24088 KB Output is correct
57 Correct 73 ms 14160 KB Output is correct
58 Correct 1 ms 500 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 956 KB Output is correct
61 Correct 70 ms 14968 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 436 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 40 ms 6216 KB Output is correct
66 Correct 68 ms 14164 KB Output is correct
67 Correct 69 ms 14160 KB Output is correct
68 Correct 66 ms 14076 KB Output is correct
69 Correct 64 ms 14084 KB Output is correct

Subtask #6
0 / 4.0

# 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 436 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1356 KB Output is correct
7 Correct 162 ms 24024 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1188 KB Output is correct
13 Correct 160 ms 23948 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 72 ms 14712 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 408 KB Output is correct
20 Correct 40 ms 6228 KB Output is correct
21 Correct 164 ms 24144 KB Output is correct
22 Correct 161 ms 24144 KB Output is correct
23 Correct 168 ms 23984 KB Output is correct
24 Correct 162 ms 24188 KB Output is correct
25 Correct 69 ms 14164 KB Output is correct
26 Correct 65 ms 14212 KB Output is correct
27 Correct 168 ms 24120 KB Output is correct
28 Correct 160 ms 23892 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 159 ms 23892 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 600 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 161 ms 24124 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 932 KB Output is correct
45 Correct 70 ms 14580 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 41 ms 6168 KB Output is correct
50 Correct 162 ms 24120 KB Output is correct
51 Correct 166 ms 24260 KB Output is correct
52 Correct 166 ms 23976 KB Output is correct
53 Correct 67 ms 14160 KB Output is correct
54 Correct 69 ms 14196 KB Output is correct
55 Correct 161 ms 23892 KB Output is correct
56 Correct 166 ms 24088 KB Output is correct
57 Correct 73 ms 14160 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 40 ms 6272 KB Output is correct
62 Correct 170 ms 24284 KB Output is correct
63 Correct 161 ms 23892 KB Output is correct
64 Correct 167 ms 24120 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 40 ms 6388 KB Output is correct
67 Correct 162 ms 24148 KB Output is correct
68 Correct 167 ms 24040 KB Output is correct
69 Correct 165 ms 24092 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 344 KB Output is correct
73 Correct 41 ms 6200 KB Output is correct
74 Correct 162 ms 24144 KB Output is correct
75 Correct 165 ms 24272 KB Output is correct
76 Correct 160 ms 24144 KB Output is correct
77 Correct 158 ms 23892 KB Output is correct
78 Correct 1 ms 500 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 956 KB Output is correct
81 Correct 70 ms 14968 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 436 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 40 ms 6216 KB Output is correct
86 Correct 68 ms 14164 KB Output is correct
87 Correct 69 ms 14160 KB Output is correct
88 Correct 66 ms 14076 KB Output is correct
89 Correct 64 ms 14084 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct
92 Correct 3 ms 856 KB Output is correct
93 Correct 69 ms 15352 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 344 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 17 ms 3716 KB Output is correct
98 Correct 66 ms 14160 KB Output is correct
99 Correct 69 ms 14164 KB Output is correct
100 Correct 68 ms 14160 KB Output is correct
101 Correct 69 ms 13992 KB Output is correct
102 Incorrect 163 ms 24036 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -