oj.uz

Submission #790884

# Submission time Handle Problem Language Result Execution time Memory
790884 2023-07-23T09:14:04 Z alexander707070 Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 186 ms 38164 KB 
#include<bits/stdc++.h>
#include "supertrees.h"
#define MAXN 300007
using namespace std;

int n;
int dsu[MAXN],dsu2[MAXN];
vector<int> comp[MAXN],comp2[MAXN];
vector< vector<int> > ans;

int root(int x){
    if(dsu[x]==x)return x;
    dsu[x]=root(dsu[x]);
    return dsu[x];
}

void mergev(int x,int y){
    dsu[root(x)]=root(y);
}

int root2(int x){
    if(dsu2[x]==x)return x;
    dsu2[x]=root2(dsu2[x]);
    return dsu2[x];
}

void mergev2(int x,int y){
    dsu2[root2(x)]=root2(y);
}

void add_edge(int x,int y){
    ans[x][y]=ans[y][x]=1;
}

int construct(vector< vector<int> > p){
    n=int(p.size());

    ans.resize(n);
    for(int i=0;i<n;i++){
        ans[i].resize(n);
    }

    for(int i=0;i<n;i++){
        dsu[i]=dsu2[i]=i;
    }

    for(int i=0;i<n;i++){
        for(int f=i+1;f<n;f++){
            if(p[i][f]==1)mergev(i,f);
        }
    }

    for(int i=0;i<n;i++){
        comp[root(i)].push_back(i);
    }

    for(int i=0;i<n;i++){
        if(comp[i].empty())continue;

        for(int f=0;f<comp[i].size();f++){
            for(int k=f+1;k<comp[i].size();k++){
                if(p[comp[i][f]][comp[i][k]]!=1)return 0;
            }
        }
        for(int f=0;f<comp[i].size()-1;f++){
            add_edge(comp[i][f],comp[i][f+1]);
        }
    }

    for(int i=0;i<n;i++){
        for(int f=i+1;f<n;f++){
            if(p[i][f]==2)mergev2(root(i),root(f));
        }
    }

    for(int i=0;i<n;i++){
        if(comp[i].empty())continue;
        comp2[root2(i)].push_back(i);
    }

    for(int i=0;i<n;i++){
        if(comp2[i].empty() or comp2[i].size()==1)continue;

        for(int f=0;f<comp2[i].size();f++){
            for(int k=f+1;k<comp2[i].size();k++){
                for(int t:comp[comp2[i][f]]){
                    for(int s:comp[comp2[i][k]]){
                        if(p[t][s]!=2)return 0;
                    }
                }
            }
        }
        for(int f=0;f<comp2[i].size();f++){
            add_edge(comp2[i][f],comp2[i][(f+1)%int(comp2[i].size())]);
        }
    }

    build(ans);

    /*
    for(int i=0;i<ans.size();i++){
        for(int f=0;f<ans.size();f++){
            cout<<ans[i][f]<<" ";
        }
        cout<<"\n";
    }
    */
    
    return 1;
}

/*
int main(){
    construct({{1, 1, 1,1}, {1, 1, 1,1}, {1,1,1,1}, {1,1,1,1}});
}
*/

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:60:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for(int f=0;f<comp[i].size();f++){
      |                     ~^~~~~~~~~~~~~~~
supertrees.cpp:61:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |             for(int k=f+1;k<comp[i].size();k++){
      |                           ~^~~~~~~~~~~~~~~
supertrees.cpp:65:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |         for(int f=0;f<comp[i].size()-1;f++){
      |                     ~^~~~~~~~~~~~~~~~~
supertrees.cpp:84:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |         for(int f=0;f<comp2[i].size();f++){
      |                     ~^~~~~~~~~~~~~~~~
supertrees.cpp:85:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |             for(int k=f+1;k<comp2[i].size();k++){
      |                           ~^~~~~~~~~~~~~~~~
supertrees.cpp:93:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         for(int f=0;f<comp2[i].size();f++){
      |                     ~^~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14292 KB Output is correct
2 Correct 9 ms 14404 KB Output is correct
3 Correct 6 ms 14292 KB Output is correct
4 Correct 6 ms 14292 KB Output is correct
5 Correct 6 ms 14292 KB Output is correct
6 Correct 14 ms 15320 KB Output is correct
7 Correct 166 ms 38024 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14292 KB Output is correct
2 Correct 9 ms 14404 KB Output is correct
3 Correct 6 ms 14292 KB Output is correct
4 Correct 6 ms 14292 KB Output is correct
5 Correct 6 ms 14292 KB Output is correct
6 Correct 14 ms 15320 KB Output is correct
7 Correct 166 ms 38024 KB Output is correct
8 Correct 6 ms 14292 KB Output is correct
9 Correct 6 ms 14344 KB Output is correct
10 Correct 6 ms 14292 KB Output is correct
11 Correct 6 ms 14400 KB Output is correct
12 Correct 12 ms 15316 KB Output is correct
13 Correct 159 ms 38164 KB Output is correct
14 Correct 7 ms 14292 KB Output is correct
15 Correct 6 ms 14396 KB Output is correct
16 Correct 12 ms 14896 KB Output is correct
17 Correct 79 ms 28168 KB Output is correct
18 Correct 7 ms 14292 KB Output is correct
19 Correct 7 ms 14292 KB Output is correct
20 Correct 46 ms 20300 KB Output is correct
21 Correct 166 ms 38000 KB Output is correct
22 Correct 162 ms 38024 KB Output is correct
23 Correct 165 ms 38044 KB Output is correct
24 Correct 159 ms 38152 KB Output is correct
25 Correct 72 ms 28164 KB Output is correct
26 Correct 71 ms 28168 KB Output is correct
27 Correct 171 ms 38020 KB Output is correct
28 Correct 159 ms 38112 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14292 KB Output is correct
2 Correct 7 ms 14292 KB Output is correct
3 Correct 7 ms 14292 KB Output is correct
4 Incorrect 6 ms 14292 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14292 KB Output is correct
2 Correct 6 ms 14292 KB Output is correct
3 Correct 8 ms 14400 KB Output is correct
4 Correct 45 ms 20272 KB Output is correct
5 Correct 163 ms 38028 KB Output is correct
6 Correct 173 ms 38032 KB Output is correct
7 Correct 177 ms 38040 KB Output is correct
8 Correct 7 ms 14292 KB Output is correct
9 Correct 47 ms 20428 KB Output is correct
10 Correct 156 ms 38064 KB Output is correct
11 Correct 186 ms 38152 KB Output is correct
12 Correct 164 ms 38136 KB Output is correct
13 Correct 7 ms 14292 KB Output is correct
14 Correct 6 ms 14292 KB Output is correct
15 Correct 6 ms 14420 KB Output is correct
16 Correct 43 ms 20300 KB Output is correct
17 Correct 186 ms 38140 KB Output is correct
18 Correct 164 ms 38064 KB Output is correct
19 Correct 159 ms 38112 KB Output is correct
20 Correct 160 ms 38072 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14292 KB Output is correct
2 Correct 9 ms 14404 KB Output is correct
3 Correct 6 ms 14292 KB Output is correct
4 Correct 6 ms 14292 KB Output is correct
5 Correct 6 ms 14292 KB Output is correct
6 Correct 14 ms 15320 KB Output is correct
7 Correct 166 ms 38024 KB Output is correct
8 Correct 6 ms 14292 KB Output is correct
9 Correct 6 ms 14344 KB Output is correct
10 Correct 6 ms 14292 KB Output is correct
11 Correct 6 ms 14400 KB Output is correct
12 Correct 12 ms 15316 KB Output is correct
13 Correct 159 ms 38164 KB Output is correct
14 Correct 7 ms 14292 KB Output is correct
15 Correct 6 ms 14396 KB Output is correct
16 Correct 12 ms 14896 KB Output is correct
17 Correct 79 ms 28168 KB Output is correct
18 Correct 7 ms 14292 KB Output is correct
19 Correct 7 ms 14292 KB Output is correct
20 Correct 46 ms 20300 KB Output is correct
21 Correct 166 ms 38000 KB Output is correct
22 Correct 162 ms 38024 KB Output is correct
23 Correct 165 ms 38044 KB Output is correct
24 Correct 159 ms 38152 KB Output is correct
25 Correct 72 ms 28164 KB Output is correct
26 Correct 71 ms 28168 KB Output is correct
27 Correct 171 ms 38020 KB Output is correct
28 Correct 159 ms 38112 KB Output is correct
29 Correct 6 ms 14292 KB Output is correct
30 Correct 7 ms 14292 KB Output is correct
31 Correct 7 ms 14292 KB Output is correct
32 Incorrect 6 ms 14292 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14292 KB Output is correct
2 Correct 9 ms 14404 KB Output is correct
3 Correct 6 ms 14292 KB Output is correct
4 Correct 6 ms 14292 KB Output is correct
5 Correct 6 ms 14292 KB Output is correct
6 Correct 14 ms 15320 KB Output is correct
7 Correct 166 ms 38024 KB Output is correct
8 Correct 6 ms 14292 KB Output is correct
9 Correct 6 ms 14344 KB Output is correct
10 Correct 6 ms 14292 KB Output is correct
11 Correct 6 ms 14400 KB Output is correct
12 Correct 12 ms 15316 KB Output is correct
13 Correct 159 ms 38164 KB Output is correct
14 Correct 7 ms 14292 KB Output is correct
15 Correct 6 ms 14396 KB Output is correct
16 Correct 12 ms 14896 KB Output is correct
17 Correct 79 ms 28168 KB Output is correct
18 Correct 7 ms 14292 KB Output is correct
19 Correct 7 ms 14292 KB Output is correct
20 Correct 46 ms 20300 KB Output is correct
21 Correct 166 ms 38000 KB Output is correct
22 Correct 162 ms 38024 KB Output is correct
23 Correct 165 ms 38044 KB Output is correct
24 Correct 159 ms 38152 KB Output is correct
25 Correct 72 ms 28164 KB Output is correct
26 Correct 71 ms 28168 KB Output is correct
27 Correct 171 ms 38020 KB Output is correct
28 Correct 159 ms 38112 KB Output is correct
29 Correct 6 ms 14292 KB Output is correct
30 Correct 7 ms 14292 KB Output is correct
31 Correct 7 ms 14292 KB Output is correct
32 Incorrect 6 ms 14292 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -