oj.uz

Submission #1046557

# Submission time Handle Problem Language Result Execution time Memory
1046557 2024-08-06T16:49:12 Z sofijavelkovska Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 127 ms 22400 KB 
#include "supertrees.h"
//#include "grader.cpp"

#include <bits/stdc++.h>
using namespace std;

int construct(vector<vector<int> > adj)
{
	int n=adj.size();
	vector<vector<int> > answer;
	for (int i=0; i<n; i++)
    {
        vector<int> row;
        row.resize(n, 0);
        answer.push_back(row);
    }
    for (int i=0; i<n; i++)
        for (int j=i+1; j<n; j++)
            if (adj[i][j]==3)
                return 0;
	int visited[n]={0};
	queue<int> q;
	vector<int> component;
	vector<vector<int> > subcomponents;
	for (int i=0; i<n; i++)
    {
        if (visited[i])
            continue;
        visited[i]=1;
        q.push(i);
        component.clear();
        while (!q.empty())
        {
            int x=q.front();
            q.pop();
            component.push_back(x);
            for (int j=0; j<n; j++)
                if (adj[x][j]>0 && !visited[j])
                {
                    visited[j]=1;
                    q.push(j);
                }
        }
        subcomponents.clear();
        for (auto x : component)
        {
            if (visited[x]==2)
                continue;
            visited[x]=2;
            q.push(x);
            vector<int> newcomp;
            subcomponents.push_back(newcomp);
            while (!q.empty())
            {
                int y=q.front();
                q.pop();
                subcomponents.back().push_back(y);
                for (auto z : component)
                    if (y!=z && adj[y][z]==1 && visited[z]!=2)
                    {
                        visited[z]=2;
                        q.push(z);
                    }
            }
        }
        for (int j=0; j<subcomponents.size(); j++)
        {
            for (int t=0; t<subcomponents[j].size(); t++)
                for (int k=t+1; k<subcomponents[j].size(); k++)
                    if (adj[subcomponents[j][t]][subcomponents[j][k]]!=1)
                        return 0;
            for (auto x : subcomponents[j])
                for (int t=0; t<subcomponents.size(); t++)
                {
                    if (t==j)
                        continue;
                    for (auto y : subcomponents[t])
                        if (adj[x][y]!=2)
                            return 0;
                }
        }
        if (subcomponents.size()==2)
        {
            for (int j=0; j<component.size(); j++)
                for (int t=j+1; t<component.size(); t++)
                    if (adj[j][t]!=1)
                        return 0;
        }
        for (int j=0; j<subcomponents.size(); j++)
            for (int t=0; t<subcomponents[j].size()-1; t++)
            {
                int x=subcomponents[j][t];
                int y=subcomponents[j][t+1];
                answer[x][y]=1;
                answer[y][x]=1;
            }
        if (subcomponents.size()==1)
            continue;
        if (subcomponents.size()==2)
        {
            int x=subcomponents[0][0];
            int y=subcomponents[1][0];
            answer[x][y]=1;
            answer[y][x]=1;
        }
        for (int j=0; j<subcomponents.size(); j++)
        {
            int x=subcomponents[j][0];
            int y=subcomponents[(j+1)%subcomponents.size()][0];
            answer[x][y]=1;
            answer[y][x]=1;
        }
    }
	build(answer);

	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:17:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   17 |     for (int i=0; i<n; i++)
      |     ^~~
supertrees.cpp:21:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   21 |  int visited[n]={0};
      |  ^~~
supertrees.cpp:66:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |         for (int j=0; j<subcomponents.size(); j++)
      |                       ~^~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:68:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |             for (int t=0; t<subcomponents[j].size(); t++)
      |                           ~^~~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:69:34: 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=t+1; k<subcomponents[j].size(); k++)
      |                                 ~^~~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:73:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |                 for (int t=0; t<subcomponents.size(); t++)
      |                               ~^~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:84:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |             for (int j=0; j<component.size(); j++)
      |                           ~^~~~~~~~~~~~~~~~~
supertrees.cpp:85:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |                 for (int t=j+1; t<component.size(); t++)
      |                                 ~^~~~~~~~~~~~~~~~~
supertrees.cpp:89:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |         for (int j=0; j<subcomponents.size(); j++)
      |                       ~^~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:90:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |             for (int t=0; t<subcomponents[j].size()-1; t++)
      |                           ~^~~~~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:106:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |         for (int j=0; j<subcomponents.size(); j++)
      |                       ~^~~~~~~~~~~~~~~~~~~~~

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 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 4 ms 1116 KB Output is correct
7 Correct 97 ms 22124 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 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 4 ms 1116 KB Output is correct
7 Correct 97 ms 22124 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 4 ms 1112 KB Output is correct
13 Correct 103 ms 21964 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 57 ms 12116 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 24 ms 5900 KB Output is correct
21 Correct 102 ms 22112 KB Output is correct
22 Correct 97 ms 22004 KB Output is correct
23 Correct 104 ms 22100 KB Output is correct
24 Correct 101 ms 22036 KB Output is correct
25 Correct 43 ms 12116 KB Output is correct
26 Correct 41 ms 12124 KB Output is correct
27 Correct 99 ms 22148 KB Output is correct
28 Correct 97 ms 22116 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 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 344 KB Output is correct
8 Correct 4 ms 1144 KB Output is correct
9 Correct 95 ms 21944 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 98 ms 22100 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 59 ms 12312 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 24 ms 5780 KB Output is correct
22 Correct 97 ms 22100 KB Output is correct
23 Correct 97 ms 22040 KB Output is correct
24 Correct 106 ms 22088 KB Output is correct
25 Correct 41 ms 12040 KB Output is correct
26 Correct 61 ms 12052 KB Output is correct
27 Correct 96 ms 21956 KB Output is correct
28 Correct 107 ms 22400 KB Output is correct
29 Correct 43 ms 12368 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 0 ms 348 KB Output is correct
4 Correct 24 ms 5924 KB Output is correct
5 Correct 99 ms 21968 KB Output is correct
6 Correct 95 ms 22188 KB Output is correct
7 Correct 107 ms 22032 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 25 ms 5876 KB Output is correct
10 Correct 108 ms 22100 KB Output is correct
11 Correct 96 ms 22040 KB Output is correct
12 Correct 103 ms 22040 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 33 ms 5716 KB Output is correct
17 Correct 101 ms 22100 KB Output is correct
18 Correct 97 ms 22156 KB Output is correct
19 Correct 127 ms 22100 KB Output is correct
20 Correct 95 ms 22096 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 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 4 ms 1116 KB Output is correct
7 Correct 97 ms 22124 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 4 ms 1112 KB Output is correct
13 Correct 103 ms 21964 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 57 ms 12116 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 24 ms 5900 KB Output is correct
21 Correct 102 ms 22112 KB Output is correct
22 Correct 97 ms 22004 KB Output is correct
23 Correct 104 ms 22100 KB Output is correct
24 Correct 101 ms 22036 KB Output is correct
25 Correct 43 ms 12116 KB Output is correct
26 Correct 41 ms 12124 KB Output is correct
27 Correct 99 ms 22148 KB Output is correct
28 Correct 97 ms 22116 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 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 0 ms 344 KB Output is correct
36 Correct 4 ms 1144 KB Output is correct
37 Correct 95 ms 21944 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1116 KB Output is correct
41 Correct 98 ms 22100 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 856 KB Output is correct
45 Correct 59 ms 12312 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 24 ms 5780 KB Output is correct
50 Correct 97 ms 22100 KB Output is correct
51 Correct 97 ms 22040 KB Output is correct
52 Correct 106 ms 22088 KB Output is correct
53 Correct 41 ms 12040 KB Output is correct
54 Correct 61 ms 12052 KB Output is correct
55 Correct 96 ms 21956 KB Output is correct
56 Correct 107 ms 22400 KB Output is correct
57 Correct 43 ms 12368 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 856 KB Output is correct
61 Correct 52 ms 12052 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 24 ms 5724 KB Output is correct
66 Correct 44 ms 12052 KB Output is correct
67 Correct 46 ms 12116 KB Output is correct
68 Correct 42 ms 12116 KB Output is correct
69 Correct 42 ms 12056 KB Output is correct

Subtask #6
4.0 / 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 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 4 ms 1116 KB Output is correct
7 Correct 97 ms 22124 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 4 ms 1112 KB Output is correct
13 Correct 103 ms 21964 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 57 ms 12116 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 24 ms 5900 KB Output is correct
21 Correct 102 ms 22112 KB Output is correct
22 Correct 97 ms 22004 KB Output is correct
23 Correct 104 ms 22100 KB Output is correct
24 Correct 101 ms 22036 KB Output is correct
25 Correct 43 ms 12116 KB Output is correct
26 Correct 41 ms 12124 KB Output is correct
27 Correct 99 ms 22148 KB Output is correct
28 Correct 97 ms 22116 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 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 0 ms 344 KB Output is correct
36 Correct 4 ms 1144 KB Output is correct
37 Correct 95 ms 21944 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1116 KB Output is correct
41 Correct 98 ms 22100 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 856 KB Output is correct
45 Correct 59 ms 12312 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 24 ms 5780 KB Output is correct
50 Correct 97 ms 22100 KB Output is correct
51 Correct 97 ms 22040 KB Output is correct
52 Correct 106 ms 22088 KB Output is correct
53 Correct 41 ms 12040 KB Output is correct
54 Correct 61 ms 12052 KB Output is correct
55 Correct 96 ms 21956 KB Output is correct
56 Correct 107 ms 22400 KB Output is correct
57 Correct 43 ms 12368 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 24 ms 5924 KB Output is correct
62 Correct 99 ms 21968 KB Output is correct
63 Correct 95 ms 22188 KB Output is correct
64 Correct 107 ms 22032 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 25 ms 5876 KB Output is correct
67 Correct 108 ms 22100 KB Output is correct
68 Correct 96 ms 22040 KB Output is correct
69 Correct 103 ms 22040 KB Output is correct
70 Correct 1 ms 600 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 33 ms 5716 KB Output is correct
74 Correct 101 ms 22100 KB Output is correct
75 Correct 97 ms 22156 KB Output is correct
76 Correct 127 ms 22100 KB Output is correct
77 Correct 95 ms 22096 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 856 KB Output is correct
81 Correct 52 ms 12052 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 24 ms 5724 KB Output is correct
86 Correct 44 ms 12052 KB Output is correct
87 Correct 46 ms 12116 KB Output is correct
88 Correct 42 ms 12116 KB Output is correct
89 Correct 42 ms 12056 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct
92 Correct 2 ms 860 KB Output is correct
93 Correct 44 ms 12056 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 11 ms 3420 KB Output is correct
98 Correct 46 ms 12060 KB Output is correct
99 Correct 42 ms 12112 KB Output is correct
100 Correct 42 ms 12120 KB Output is correct
101 Correct 41 ms 12116 KB Output is correct
102 Correct 40 ms 12116 KB Output is correct
103 Correct 41 ms 12120 KB Output is correct
104 Correct 42 ms 12116 KB Output is correct
105 Correct 46 ms 12112 KB Output is correct