oj.uz

Submission #953611

# Submission time Handle Problem Language Result Execution time Memory
953611 2024-03-26T10:25:54 Z Desh03 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 189 ms 22436 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;
        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]) {    
                    q.push(j);
                }
            }
        }
        bool two = 0, three = 0;
        for (int u : nodes) {
            for (int v : nodes) {
                if (p[u][v] == 3) {
                    three = 1;
                }
                if (p[u][v] == 2) {
                    two = 1;
                }
            }
        }
        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 k = j + 1; k < sz; k++) {
                for (int u : trees[j]) {
                    for (int v : trees[k]) {
                        if ((two && p[u][v] != 2) || (three && p[u][v] != three)) {
                            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:63:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |             for (int k = 0; k < trees[j].size(); k++) {
      |                             ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:64:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |                 for (int l = k + 1; l < trees[j].size(); l++) {
      |                                     ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:85:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |             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 0 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 0 ms 344 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 164 ms 22116 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 0 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 0 ms 344 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 164 ms 22116 KB Output is correct
8 Correct 0 ms 348 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 348 KB Output is correct
12 Correct 7 ms 1112 KB Output is correct
13 Correct 174 ms 22024 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1112 KB Output is correct
17 Correct 85 ms 13316 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 5676 KB Output is correct
21 Correct 167 ms 22188 KB Output is correct
22 Correct 159 ms 22096 KB Output is correct
23 Correct 167 ms 22008 KB Output is correct
24 Correct 165 ms 22020 KB Output is correct
25 Correct 69 ms 12116 KB Output is correct
26 Correct 65 ms 12116 KB Output is correct
27 Correct 174 ms 22196 KB Output is correct
28 Correct 167 ms 22100 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 0 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 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1112 KB Output is correct
9 Correct 189 ms 22016 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 164 ms 22136 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 92 ms 13076 KB Output is correct
18 Correct 1 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 40 ms 5724 KB Output is correct
22 Correct 160 ms 22164 KB Output is correct
23 Correct 161 ms 21936 KB Output is correct
24 Correct 169 ms 22004 KB Output is correct
25 Correct 67 ms 12112 KB Output is correct
26 Correct 72 ms 12372 KB Output is correct
27 Correct 163 ms 22020 KB Output is correct
28 Correct 166 ms 21968 KB Output is correct
29 Correct 67 ms 12056 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 40 ms 5772 KB Output is correct
5 Correct 165 ms 22020 KB Output is correct
6 Correct 158 ms 22096 KB Output is correct
7 Correct 170 ms 22436 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 40 ms 5768 KB Output is correct
10 Correct 163 ms 22024 KB Output is correct
11 Correct 160 ms 22096 KB Output is correct
12 Correct 170 ms 21996 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 41 ms 5788 KB Output is correct
17 Correct 160 ms 22100 KB Output is correct
18 Correct 160 ms 22100 KB Output is correct
19 Correct 160 ms 22096 KB Output is correct
20 Correct 160 ms 22156 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 0 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 0 ms 344 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 164 ms 22116 KB Output is correct
8 Correct 0 ms 348 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 348 KB Output is correct
12 Correct 7 ms 1112 KB Output is correct
13 Correct 174 ms 22024 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1112 KB Output is correct
17 Correct 85 ms 13316 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 5676 KB Output is correct
21 Correct 167 ms 22188 KB Output is correct
22 Correct 159 ms 22096 KB Output is correct
23 Correct 167 ms 22008 KB Output is correct
24 Correct 165 ms 22020 KB Output is correct
25 Correct 69 ms 12116 KB Output is correct
26 Correct 65 ms 12116 KB Output is correct
27 Correct 174 ms 22196 KB Output is correct
28 Correct 167 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 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 1112 KB Output is correct
37 Correct 189 ms 22016 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1116 KB Output is correct
41 Correct 164 ms 22136 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 92 ms 13076 KB Output is correct
46 Correct 1 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 40 ms 5724 KB Output is correct
50 Correct 160 ms 22164 KB Output is correct
51 Correct 161 ms 21936 KB Output is correct
52 Correct 169 ms 22004 KB Output is correct
53 Correct 67 ms 12112 KB Output is correct
54 Correct 72 ms 12372 KB Output is correct
55 Correct 163 ms 22020 KB Output is correct
56 Correct 166 ms 21968 KB Output is correct
57 Correct 67 ms 12056 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 1 ms 544 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 85 ms 13576 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 1 ms 344 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 43 ms 5972 KB Output is correct
66 Correct 71 ms 12300 KB Output is correct
67 Correct 74 ms 12300 KB Output is correct
68 Correct 67 ms 12052 KB Output is correct
69 Correct 75 ms 12112 KB Output is correct

Subtask #6
4.0 / 4.0

# 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 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 164 ms 22116 KB Output is correct
8 Correct 0 ms 348 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 348 KB Output is correct
12 Correct 7 ms 1112 KB Output is correct
13 Correct 174 ms 22024 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1112 KB Output is correct
17 Correct 85 ms 13316 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 5676 KB Output is correct
21 Correct 167 ms 22188 KB Output is correct
22 Correct 159 ms 22096 KB Output is correct
23 Correct 167 ms 22008 KB Output is correct
24 Correct 165 ms 22020 KB Output is correct
25 Correct 69 ms 12116 KB Output is correct
26 Correct 65 ms 12116 KB Output is correct
27 Correct 174 ms 22196 KB Output is correct
28 Correct 167 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 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 1112 KB Output is correct
37 Correct 189 ms 22016 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1116 KB Output is correct
41 Correct 164 ms 22136 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 92 ms 13076 KB Output is correct
46 Correct 1 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 40 ms 5724 KB Output is correct
50 Correct 160 ms 22164 KB Output is correct
51 Correct 161 ms 21936 KB Output is correct
52 Correct 169 ms 22004 KB Output is correct
53 Correct 67 ms 12112 KB Output is correct
54 Correct 72 ms 12372 KB Output is correct
55 Correct 163 ms 22020 KB Output is correct
56 Correct 166 ms 21968 KB Output is correct
57 Correct 67 ms 12056 KB Output is correct
58 Correct 0 ms 600 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 40 ms 5772 KB Output is correct
62 Correct 165 ms 22020 KB Output is correct
63 Correct 158 ms 22096 KB Output is correct
64 Correct 170 ms 22436 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 40 ms 5768 KB Output is correct
67 Correct 163 ms 22024 KB Output is correct
68 Correct 160 ms 22096 KB Output is correct
69 Correct 170 ms 21996 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 41 ms 5788 KB Output is correct
74 Correct 160 ms 22100 KB Output is correct
75 Correct 160 ms 22100 KB Output is correct
76 Correct 160 ms 22096 KB Output is correct
77 Correct 160 ms 22156 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 1 ms 544 KB Output is correct
80 Correct 4 ms 852 KB Output is correct
81 Correct 85 ms 13576 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 1 ms 344 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 43 ms 5972 KB Output is correct
86 Correct 71 ms 12300 KB Output is correct
87 Correct 74 ms 12300 KB Output is correct
88 Correct 67 ms 12052 KB Output is correct
89 Correct 75 ms 12112 KB Output is correct
90 Correct 2 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 4 ms 968 KB Output is correct
93 Correct 82 ms 13652 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 1 ms 344 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 17 ms 3420 KB Output is correct
98 Correct 70 ms 12116 KB Output is correct
99 Correct 77 ms 12312 KB Output is correct
100 Correct 68 ms 12116 KB Output is correct
101 Correct 70 ms 12044 KB Output is correct
102 Correct 75 ms 14108 KB Output is correct
103 Correct 81 ms 14080 KB Output is correct
104 Correct 87 ms 14088 KB Output is correct
105 Correct 88 ms 13320 KB Output is correct