oj.uz

Submission #755064

# Submission time Handle Problem Language Result Execution time Memory
755064 2023-06-09T11:23:05 Z sofija6 Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 219 ms 25252 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define MAXN 1010
using namespace std;
int d[MAXN];
int Root(int p)
{
    while (d[p]!=p)
    {
        d[p]=d[d[p]];
        p=d[p];
    }
    return p;
}
void Join(int p,int q)
{
    d[Root(p)]=d[Root(q)];
}
int construct(std::vector<std::vector<int>> p) {
    int n=p.size();
    for (int i=0;i<n;i++)
    {
        d[i]=i;
        for (int j=0;j<n;j++)
        {
            if (p[i][j]==3 || p[i][j]!=p[j][i])
                return 0;
        }
    }
    vector<int> v[n+2];
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
        {
            if (p[i][j]==1)
                Join(i,j);
        }
    }
    vector<vector<int> > b;
    b.resize(n);
    for (int i=0;i<n;i++)
        b[i].resize(n);
    for (int i=0;i<n;i++)
    {
        if (i==Root(i))
            continue;
        b[i][Root(i)]=1;
        b[Root(i)][i]=1;
    }
    bool cyc[n+2][n+2];
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
            cyc[i][j]=false;
    }
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
        {
            if (p[i][j]==2)
                cyc[Root(i)][Root(j)]=true;
        }
    }
    vector<int> root[n+2];
    for (int i=0;i<n;i++)
    {
        root[Root(i)].push_back(i);
        for (int j=0;j<n;j++)
        {
            if ((!p[i][j] && (Root(i)==Root(j) || cyc[Root(i)][Root(j)])) || (p[i][j]==1 && cyc[Root(i)][Root(j)]))
                return 0;
        }
    }
    bool vis[n+2]={false};
    for (int i=0;i<n;i++)
    {
        if (vis[i] || Root(i)!=i)
            continue;
        set<int> s;
        vector<int> v;
        int cur=i;
        while (true)
        {
            s.insert(cur);
            v.push_back(cur);
            vis[cur]=true;
            bool next=false;
            for (int j=cur+1;j<n;j++)
            {
                if (cyc[cur][j])
                {
                    cur=j;
                    next=true;
                    break;
                }
            }
            if (!next)
                break;
        }
        if (s.size()==2)
            return 0;
        if (s.size()==1)
        {
            if (cyc[cur][cur])
                return 0;
            continue;
        }
        for (int j=0;j<v.size();j++)
        {
            for (int k=0;k<v.size();k++)
            {
                for (auto U : root[v[j]])
                {
                    for (auto V : root[v[k]])
                    {
                        if (Root(U)==Root(V))
                        {
                            if (p[U][V]==2)
                                return 0;
                            continue;
                        }
                        if (p[U][V]!=2)
                            return 0;
                    }
                }
            }
        }
        for (int j=0;j<v.size()-1;j++)
        {
            b[v[j]][v[j+1]]=1;
            b[v[j+1]][v[j]]=1;
        }
        b[v[v.size()-1]][v[0]]=1;
        b[v[0]][v[v.size()-1]]=1;
    }
    build(b);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:108:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |         for (int j=0;j<v.size();j++)
      |                      ~^~~~~~~~~
supertrees.cpp:110:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |             for (int k=0;k<v.size();k++)
      |                          ~^~~~~~~~~
supertrees.cpp:128:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |         for (int j=0;j<v.size()-1;j++)
      |                      ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 9 ms 1236 KB Output is correct
7 Correct 194 ms 23080 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 9 ms 1236 KB Output is correct
7 Correct 194 ms 23080 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1236 KB Output is correct
13 Correct 190 ms 23020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 92 ms 13068 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 51 ms 5964 KB Output is correct
21 Correct 189 ms 23096 KB Output is correct
22 Correct 185 ms 23040 KB Output is correct
23 Correct 219 ms 23044 KB Output is correct
24 Correct 185 ms 22988 KB Output is correct
25 Correct 77 ms 13064 KB Output is correct
26 Correct 80 ms 13068 KB Output is correct
27 Correct 199 ms 23016 KB Output is correct
28 Correct 181 ms 23076 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 10 ms 1236 KB Output is correct
9 Correct 185 ms 23192 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 9 ms 1236 KB Output is correct
13 Correct 184 ms 23044 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 852 KB Output is correct
17 Correct 102 ms 15100 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 47 ms 6500 KB Output is correct
22 Correct 203 ms 24960 KB Output is correct
23 Correct 187 ms 25096 KB Output is correct
24 Correct 215 ms 25252 KB Output is correct
25 Correct 75 ms 15096 KB Output is correct
26 Incorrect 195 ms 25020 KB Answer gives possible 1 while actual possible 0
27 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 46 ms 6032 KB Output is correct
5 Correct 210 ms 23044 KB Output is correct
6 Correct 190 ms 23092 KB Output is correct
7 Correct 215 ms 23060 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 49 ms 6004 KB Output is correct
10 Correct 194 ms 23180 KB Output is correct
11 Correct 183 ms 22988 KB Output is correct
12 Correct 207 ms 23056 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 48 ms 6120 KB Output is correct
17 Correct 188 ms 23044 KB Output is correct
18 Correct 195 ms 23096 KB Output is correct
19 Correct 200 ms 23100 KB Output is correct
20 Correct 184 ms 22988 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 9 ms 1236 KB Output is correct
7 Correct 194 ms 23080 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1236 KB Output is correct
13 Correct 190 ms 23020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 92 ms 13068 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 51 ms 5964 KB Output is correct
21 Correct 189 ms 23096 KB Output is correct
22 Correct 185 ms 23040 KB Output is correct
23 Correct 219 ms 23044 KB Output is correct
24 Correct 185 ms 22988 KB Output is correct
25 Correct 77 ms 13064 KB Output is correct
26 Correct 80 ms 13068 KB Output is correct
27 Correct 199 ms 23016 KB Output is correct
28 Correct 181 ms 23076 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 10 ms 1236 KB Output is correct
37 Correct 185 ms 23192 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 9 ms 1236 KB Output is correct
41 Correct 184 ms 23044 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 852 KB Output is correct
45 Correct 102 ms 15100 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 47 ms 6500 KB Output is correct
50 Correct 203 ms 24960 KB Output is correct
51 Correct 187 ms 25096 KB Output is correct
52 Correct 215 ms 25252 KB Output is correct
53 Correct 75 ms 15096 KB Output is correct
54 Incorrect 195 ms 25020 KB Answer gives possible 1 while actual possible 0
55 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 9 ms 1236 KB Output is correct
7 Correct 194 ms 23080 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1236 KB Output is correct
13 Correct 190 ms 23020 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 92 ms 13068 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 51 ms 5964 KB Output is correct
21 Correct 189 ms 23096 KB Output is correct
22 Correct 185 ms 23040 KB Output is correct
23 Correct 219 ms 23044 KB Output is correct
24 Correct 185 ms 22988 KB Output is correct
25 Correct 77 ms 13064 KB Output is correct
26 Correct 80 ms 13068 KB Output is correct
27 Correct 199 ms 23016 KB Output is correct
28 Correct 181 ms 23076 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 10 ms 1236 KB Output is correct
37 Correct 185 ms 23192 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 9 ms 1236 KB Output is correct
41 Correct 184 ms 23044 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 852 KB Output is correct
45 Correct 102 ms 15100 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 47 ms 6500 KB Output is correct
50 Correct 203 ms 24960 KB Output is correct
51 Correct 187 ms 25096 KB Output is correct
52 Correct 215 ms 25252 KB Output is correct
53 Correct 75 ms 15096 KB Output is correct
54 Incorrect 195 ms 25020 KB Answer gives possible 1 while actual possible 0
55 Halted 0 ms 0 KB -