oj.uz

Submission #864744

# Submission time Handle Problem Language Result Execution time Memory
864744 2023-10-23T14:10:25 Z andrei_boaca Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 159 ms 30288 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;

int n;
vector<vector<int>> adj;
vector<int> muchii[1005];
int comp[1005],nrcomp;
vector<int> nodes;
void dfs(int nod)
{
    comp[nod]=nrcomp;
    nodes.push_back(nod);
    for(int i:muchii[nod])
        if(!comp[i])
            dfs(i);
}
int construct(std::vector<std::vector<int>> p)
{
    n=p.size();
    adj.resize(n);
    for(int i=0;i<n;i++)
        adj[i].resize(n);
    bool sub1=1;
    bool sub2=1;
    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
        {
            sub1&=(p[i][j]<=1);
            sub2&=(p[i][j]==0||p[i][j]==2||i==j);
        }
    if(sub1||sub2)
    {
        for(int i=0;i<n;i++)
            for(int j=0;j<n;j++)
                if(p[i][j]==1)
                {
                    muchii[i].push_back(j);
                    muchii[j].push_back(i);
                }
        for(int i=0;i<n;i++)
            if(comp[i]==0)
            {
                nrcomp++;
                nodes.clear();
                dfs(i);
                for(int j=1;j<nodes.size();j++)
                {
                    int a=nodes[j-1];
                    int b=nodes[j];
                    adj[a][b]=adj[b][a]=1;
                }
                if(sub2)
                {
                    int a=nodes[0];
                    int b=nodes.back();
                    if(a!=b)
                    {
                        adj[a][b]=1;
                        adj[b][a]=1;
                    }
                }
            }
        for(int i=0;i<n;i++)
            for(int j=0;j<n;j++)
            {
                if(p[i][j]==0&&comp[i]==comp[j])
                    return 0;
                if(p[i][j]>0&&comp[i]!=comp[j])
                    return 0;
            }
        build(adj);
        return 1;
    }
	return 0;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:49:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |                 for(int j=1;j<nodes.size();j++)
      |                             ~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1624 KB Output is correct
7 Correct 154 ms 30288 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1624 KB Output is correct
7 Correct 154 ms 30288 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 6 ms 1116 KB Output is correct
13 Correct 143 ms 22116 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 1116 KB Output is correct
17 Correct 71 ms 17956 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5972 KB Output is correct
21 Correct 149 ms 23300 KB Output is correct
22 Correct 150 ms 22048 KB Output is correct
23 Correct 159 ms 26572 KB Output is correct
24 Correct 146 ms 22100 KB Output is correct
25 Correct 60 ms 13392 KB Output is correct
26 Correct 59 ms 12112 KB Output is correct
27 Correct 159 ms 28244 KB Output is correct
28 Correct 148 ms 22100 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
6 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1624 KB Output is correct
7 Correct 154 ms 30288 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 6 ms 1116 KB Output is correct
13 Correct 143 ms 22116 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 1116 KB Output is correct
17 Correct 71 ms 17956 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5972 KB Output is correct
21 Correct 149 ms 23300 KB Output is correct
22 Correct 150 ms 22048 KB Output is correct
23 Correct 159 ms 26572 KB Output is correct
24 Correct 146 ms 22100 KB Output is correct
25 Correct 60 ms 13392 KB Output is correct
26 Correct 59 ms 12112 KB Output is correct
27 Correct 159 ms 28244 KB Output is correct
28 Correct 148 ms 22100 KB Output is correct
29 Correct 1 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 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
34 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1624 KB Output is correct
7 Correct 154 ms 30288 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 6 ms 1116 KB Output is correct
13 Correct 143 ms 22116 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 1116 KB Output is correct
17 Correct 71 ms 17956 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5972 KB Output is correct
21 Correct 149 ms 23300 KB Output is correct
22 Correct 150 ms 22048 KB Output is correct
23 Correct 159 ms 26572 KB Output is correct
24 Correct 146 ms 22100 KB Output is correct
25 Correct 60 ms 13392 KB Output is correct
26 Correct 59 ms 12112 KB Output is correct
27 Correct 159 ms 28244 KB Output is correct
28 Correct 148 ms 22100 KB Output is correct
29 Correct 1 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 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
34 Halted 0 ms 0 KB -