oj.uz

Submission #755074

# Submission time Handle Problem Language Result Execution time Memory
755074 2023-06-09T11:30:53 Z sofija6 Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 247 ms 23176 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)]) || (Root(i)==Root(j) && p[i][j]==2))
                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)
            continue;
        for (int j=0;j<v.size();j++)
        {
            for (int k=0;k<v.size();k++)
            {
                if (j==k)
                    continue;
                for (auto U : root[v[j]])
                {
                    for (auto V : root[v[k]])
                    {
                        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:104:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |         for (int j=0;j<v.size();j++)
      |                      ~^~~~~~~~~
supertrees.cpp:106:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |             for (int k=0;k<v.size();k++)
      |                          ~^~~~~~~~~
supertrees.cpp:120:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |         for (int j=0;j<v.size()-1;j++)
      |                      ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 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 8 ms 1184 KB Output is correct
7 Correct 204 ms 23060 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 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 8 ms 1184 KB Output is correct
7 Correct 204 ms 23060 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1184 KB Output is correct
13 Correct 196 ms 23048 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 93 ms 13064 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 47 ms 5952 KB Output is correct
21 Correct 205 ms 22988 KB Output is correct
22 Correct 192 ms 23056 KB Output is correct
23 Correct 202 ms 23064 KB Output is correct
24 Correct 182 ms 23100 KB Output is correct
25 Correct 75 ms 13132 KB Output is correct
26 Correct 74 ms 13076 KB Output is correct
27 Correct 204 ms 23056 KB Output is correct
28 Correct 220 ms 22988 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 1 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 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 8 ms 1236 KB Output is correct
9 Correct 179 ms 23060 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 191 ms 23172 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 101 ms 13188 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 52 ms 6040 KB Output is correct
22 Correct 185 ms 23056 KB Output is correct
23 Correct 180 ms 23016 KB Output is correct
24 Correct 201 ms 23176 KB Output is correct
25 Correct 80 ms 13132 KB Output is correct
26 Incorrect 180 ms 23040 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 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 51 ms 5984 KB Output is correct
5 Correct 197 ms 23040 KB Output is correct
6 Correct 186 ms 23048 KB Output is correct
7 Correct 200 ms 22984 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 64 ms 6032 KB Output is correct
10 Correct 247 ms 23024 KB Output is correct
11 Correct 192 ms 23116 KB Output is correct
12 Correct 212 ms 23076 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 47 ms 5940 KB Output is correct
17 Correct 228 ms 23092 KB Output is correct
18 Correct 200 ms 23076 KB Output is correct
19 Correct 228 ms 23060 KB Output is correct
20 Correct 181 ms 23116 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 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 8 ms 1184 KB Output is correct
7 Correct 204 ms 23060 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1184 KB Output is correct
13 Correct 196 ms 23048 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 93 ms 13064 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 47 ms 5952 KB Output is correct
21 Correct 205 ms 22988 KB Output is correct
22 Correct 192 ms 23056 KB Output is correct
23 Correct 202 ms 23064 KB Output is correct
24 Correct 182 ms 23100 KB Output is correct
25 Correct 75 ms 13132 KB Output is correct
26 Correct 74 ms 13076 KB Output is correct
27 Correct 204 ms 23056 KB Output is correct
28 Correct 220 ms 22988 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 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 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 8 ms 1236 KB Output is correct
37 Correct 179 ms 23060 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 191 ms 23172 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 101 ms 13188 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 52 ms 6040 KB Output is correct
50 Correct 185 ms 23056 KB Output is correct
51 Correct 180 ms 23016 KB Output is correct
52 Correct 201 ms 23176 KB Output is correct
53 Correct 80 ms 13132 KB Output is correct
54 Incorrect 180 ms 23040 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 0 ms 212 KB Output is correct
2 Correct 1 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 8 ms 1184 KB Output is correct
7 Correct 204 ms 23060 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1184 KB Output is correct
13 Correct 196 ms 23048 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 93 ms 13064 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 47 ms 5952 KB Output is correct
21 Correct 205 ms 22988 KB Output is correct
22 Correct 192 ms 23056 KB Output is correct
23 Correct 202 ms 23064 KB Output is correct
24 Correct 182 ms 23100 KB Output is correct
25 Correct 75 ms 13132 KB Output is correct
26 Correct 74 ms 13076 KB Output is correct
27 Correct 204 ms 23056 KB Output is correct
28 Correct 220 ms 22988 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 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 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 8 ms 1236 KB Output is correct
37 Correct 179 ms 23060 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 191 ms 23172 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 101 ms 13188 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 52 ms 6040 KB Output is correct
50 Correct 185 ms 23056 KB Output is correct
51 Correct 180 ms 23016 KB Output is correct
52 Correct 201 ms 23176 KB Output is correct
53 Correct 80 ms 13132 KB Output is correct
54 Incorrect 180 ms 23040 KB Answer gives possible 1 while actual possible 0
55 Halted 0 ms 0 KB -