oj.uz

Submission #953631

# Submission time Handle Problem Language Result Execution time Memory
953631 2024-03-26T11:21:29 Z Desh03 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 190 ms 22280 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] != 3)) {
                            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 1 ms 500 KB Output is correct
2 Correct 1 ms 344 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 348 KB Output is correct
6 Correct 7 ms 1316 KB Output is correct
7 Correct 163 ms 21956 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 500 KB Output is correct
2 Correct 1 ms 344 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 348 KB Output is correct
6 Correct 7 ms 1316 KB Output is correct
7 Correct 163 ms 21956 KB Output is correct
8 Correct 1 ms 344 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 160 ms 22044 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 83 ms 13320 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 5796 KB Output is correct
21 Correct 159 ms 22168 KB Output is correct
22 Correct 160 ms 22096 KB Output is correct
23 Correct 168 ms 22052 KB Output is correct
24 Correct 165 ms 22076 KB Output is correct
25 Correct 69 ms 12200 KB Output is correct
26 Correct 64 ms 12112 KB Output is correct
27 Correct 187 ms 22064 KB Output is correct
28 Correct 163 ms 22052 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 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 1 ms 348 KB Output is correct
8 Correct 7 ms 1116 KB Output is correct
9 Correct 159 ms 22112 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1280 KB Output is correct
13 Correct 167 ms 22076 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 78 ms 13288 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 47 ms 5772 KB Output is correct
22 Correct 178 ms 22072 KB Output is correct
23 Correct 160 ms 22020 KB Output is correct
24 Correct 190 ms 22088 KB Output is correct
25 Correct 77 ms 12052 KB Output is correct
26 Correct 67 ms 12292 KB Output is correct
27 Correct 159 ms 21940 KB Output is correct
28 Correct 164 ms 21964 KB Output is correct
29 Correct 66 ms 12116 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 41 ms 5856 KB Output is correct
5 Correct 172 ms 22144 KB Output is correct
6 Correct 160 ms 22280 KB Output is correct
7 Correct 186 ms 21940 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 43 ms 5712 KB Output is correct
10 Correct 161 ms 22096 KB Output is correct
11 Correct 169 ms 22032 KB Output is correct
12 Correct 163 ms 22092 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 43 ms 5924 KB Output is correct
17 Correct 160 ms 22100 KB Output is correct
18 Correct 159 ms 22100 KB Output is correct
19 Correct 159 ms 22096 KB Output is correct
20 Correct 160 ms 22096 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 500 KB Output is correct
2 Correct 1 ms 344 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 348 KB Output is correct
6 Correct 7 ms 1316 KB Output is correct
7 Correct 163 ms 21956 KB Output is correct
8 Correct 1 ms 344 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 160 ms 22044 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 83 ms 13320 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 5796 KB Output is correct
21 Correct 159 ms 22168 KB Output is correct
22 Correct 160 ms 22096 KB Output is correct
23 Correct 168 ms 22052 KB Output is correct
24 Correct 165 ms 22076 KB Output is correct
25 Correct 69 ms 12200 KB Output is correct
26 Correct 64 ms 12112 KB Output is correct
27 Correct 187 ms 22064 KB Output is correct
28 Correct 163 ms 22052 KB Output is correct
29 Correct 0 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 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 7 ms 1116 KB Output is correct
37 Correct 159 ms 22112 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1280 KB Output is correct
41 Correct 167 ms 22076 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 78 ms 13288 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 47 ms 5772 KB Output is correct
50 Correct 178 ms 22072 KB Output is correct
51 Correct 160 ms 22020 KB Output is correct
52 Correct 190 ms 22088 KB Output is correct
53 Correct 77 ms 12052 KB Output is correct
54 Correct 67 ms 12292 KB Output is correct
55 Correct 159 ms 21940 KB Output is correct
56 Correct 164 ms 21964 KB Output is correct
57 Correct 66 ms 12116 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 500 KB Output is correct
60 Correct 5 ms 860 KB Output is correct
61 Correct 81 ms 13392 KB Output is correct
62 Correct 1 ms 504 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 40 ms 5712 KB Output is correct
66 Correct 82 ms 12052 KB Output is correct
67 Correct 68 ms 12300 KB Output is correct
68 Correct 75 ms 12060 KB Output is correct
69 Correct 64 ms 12116 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 500 KB Output is correct
2 Correct 1 ms 344 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 348 KB Output is correct
6 Correct 7 ms 1316 KB Output is correct
7 Correct 163 ms 21956 KB Output is correct
8 Correct 1 ms 344 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 160 ms 22044 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 83 ms 13320 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 5796 KB Output is correct
21 Correct 159 ms 22168 KB Output is correct
22 Correct 160 ms 22096 KB Output is correct
23 Correct 168 ms 22052 KB Output is correct
24 Correct 165 ms 22076 KB Output is correct
25 Correct 69 ms 12200 KB Output is correct
26 Correct 64 ms 12112 KB Output is correct
27 Correct 187 ms 22064 KB Output is correct
28 Correct 163 ms 22052 KB Output is correct
29 Correct 0 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 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 7 ms 1116 KB Output is correct
37 Correct 159 ms 22112 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1280 KB Output is correct
41 Correct 167 ms 22076 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 78 ms 13288 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 47 ms 5772 KB Output is correct
50 Correct 178 ms 22072 KB Output is correct
51 Correct 160 ms 22020 KB Output is correct
52 Correct 190 ms 22088 KB Output is correct
53 Correct 77 ms 12052 KB Output is correct
54 Correct 67 ms 12292 KB Output is correct
55 Correct 159 ms 21940 KB Output is correct
56 Correct 164 ms 21964 KB Output is correct
57 Correct 66 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 1 ms 348 KB Output is correct
61 Correct 41 ms 5856 KB Output is correct
62 Correct 172 ms 22144 KB Output is correct
63 Correct 160 ms 22280 KB Output is correct
64 Correct 186 ms 21940 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 43 ms 5712 KB Output is correct
67 Correct 161 ms 22096 KB Output is correct
68 Correct 169 ms 22032 KB Output is correct
69 Correct 163 ms 22092 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 43 ms 5924 KB Output is correct
74 Correct 160 ms 22100 KB Output is correct
75 Correct 159 ms 22100 KB Output is correct
76 Correct 159 ms 22096 KB Output is correct
77 Correct 160 ms 22096 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 1 ms 500 KB Output is correct
80 Correct 5 ms 860 KB Output is correct
81 Correct 81 ms 13392 KB Output is correct
82 Correct 1 ms 504 KB Output is correct
83 Correct 1 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 40 ms 5712 KB Output is correct
86 Correct 82 ms 12052 KB Output is correct
87 Correct 68 ms 12300 KB Output is correct
88 Correct 75 ms 12060 KB Output is correct
89 Correct 64 ms 12116 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 1 ms 348 KB Output is correct
92 Correct 4 ms 860 KB Output is correct
93 Correct 80 ms 13592 KB Output is correct
94 Correct 0 ms 344 KB Output is correct
95 Correct 1 ms 376 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Correct 18 ms 3420 KB Output is correct
98 Correct 67 ms 12116 KB Output is correct
99 Correct 73 ms 12296 KB Output is correct
100 Correct 82 ms 12268 KB Output is correct
101 Correct 66 ms 12056 KB Output is correct
102 Incorrect 161 ms 22208 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -