oj.uz

Submission #755084

# Submission time Handle Problem Language Result Execution time Memory
755084 2023-06-09T11:36:19 Z sofija6 Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 322 ms 23232 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;
            if (i==j && p[i][j]!=1)
                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)]))
                return 0;
            if (p[i][j]==1 && (Root(i)!=Root(j) || cyc[Root(i)][Root(j)]))
                return 0;
            if (p[i][j]==2 && (Root(i)==Root(j) || !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)
            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:110:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |         for (int j=0;j<v.size();j++)
      |                      ~^~~~~~~~~
supertrees.cpp:112:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             for (int k=0;k<v.size();k++)
      |                          ~^~~~~~~~~
supertrees.cpp:126:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  126 |         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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1204 KB Output is correct
7 Correct 203 ms 23052 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1204 KB Output is correct
7 Correct 203 ms 23052 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 9 ms 1236 KB Output is correct
13 Correct 222 ms 23048 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 724 KB Output is correct
17 Correct 113 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 50 ms 5952 KB Output is correct
21 Correct 194 ms 23060 KB Output is correct
22 Correct 202 ms 23072 KB Output is correct
23 Correct 273 ms 22988 KB Output is correct
24 Correct 230 ms 23012 KB Output is correct
25 Correct 87 ms 13132 KB Output is correct
26 Correct 84 ms 13064 KB Output is correct
27 Correct 203 ms 23128 KB Output is correct
28 Correct 197 ms 23052 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 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 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 9 ms 1236 KB Output is correct
9 Correct 215 ms 23056 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 10 ms 1228 KB Output is correct
13 Correct 221 ms 23044 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 132 ms 13188 KB Output is correct
18 Correct 1 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 49 ms 6024 KB Output is correct
22 Correct 202 ms 23044 KB Output is correct
23 Correct 209 ms 23088 KB Output is correct
24 Correct 262 ms 23076 KB Output is correct
25 Correct 163 ms 13192 KB Output is correct
26 Incorrect 218 ms 23048 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 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 48 ms 5984 KB Output is correct
5 Correct 196 ms 23048 KB Output is correct
6 Correct 209 ms 23232 KB Output is correct
7 Correct 222 ms 23064 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 56 ms 5988 KB Output is correct
10 Correct 233 ms 23044 KB Output is correct
11 Correct 322 ms 22988 KB Output is correct
12 Correct 282 ms 23052 KB Output is correct
13 Correct 1 ms 232 KB Output is correct
14 Correct 1 ms 236 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 59 ms 5952 KB Output is correct
17 Correct 281 ms 23052 KB Output is correct
18 Correct 256 ms 22988 KB Output is correct
19 Correct 284 ms 23048 KB Output is correct
20 Correct 241 ms 23100 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1204 KB Output is correct
7 Correct 203 ms 23052 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 9 ms 1236 KB Output is correct
13 Correct 222 ms 23048 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 724 KB Output is correct
17 Correct 113 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 50 ms 5952 KB Output is correct
21 Correct 194 ms 23060 KB Output is correct
22 Correct 202 ms 23072 KB Output is correct
23 Correct 273 ms 22988 KB Output is correct
24 Correct 230 ms 23012 KB Output is correct
25 Correct 87 ms 13132 KB Output is correct
26 Correct 84 ms 13064 KB Output is correct
27 Correct 203 ms 23128 KB Output is correct
28 Correct 197 ms 23052 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 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 9 ms 1236 KB Output is correct
37 Correct 215 ms 23056 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 10 ms 1228 KB Output is correct
41 Correct 221 ms 23044 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 724 KB Output is correct
45 Correct 132 ms 13188 KB Output is correct
46 Correct 1 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 49 ms 6024 KB Output is correct
50 Correct 202 ms 23044 KB Output is correct
51 Correct 209 ms 23088 KB Output is correct
52 Correct 262 ms 23076 KB Output is correct
53 Correct 163 ms 13192 KB Output is correct
54 Incorrect 218 ms 23048 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1204 KB Output is correct
7 Correct 203 ms 23052 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 9 ms 1236 KB Output is correct
13 Correct 222 ms 23048 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 724 KB Output is correct
17 Correct 113 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 50 ms 5952 KB Output is correct
21 Correct 194 ms 23060 KB Output is correct
22 Correct 202 ms 23072 KB Output is correct
23 Correct 273 ms 22988 KB Output is correct
24 Correct 230 ms 23012 KB Output is correct
25 Correct 87 ms 13132 KB Output is correct
26 Correct 84 ms 13064 KB Output is correct
27 Correct 203 ms 23128 KB Output is correct
28 Correct 197 ms 23052 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 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 9 ms 1236 KB Output is correct
37 Correct 215 ms 23056 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 10 ms 1228 KB Output is correct
41 Correct 221 ms 23044 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 724 KB Output is correct
45 Correct 132 ms 13188 KB Output is correct
46 Correct 1 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 49 ms 6024 KB Output is correct
50 Correct 202 ms 23044 KB Output is correct
51 Correct 209 ms 23088 KB Output is correct
52 Correct 262 ms 23076 KB Output is correct
53 Correct 163 ms 13192 KB Output is correct
54 Incorrect 218 ms 23048 KB Answer gives possible 1 while actual possible 0
55 Halted 0 ms 0 KB -