oj.uz

Submission #746019

# Submission time Handle Problem Language Result Execution time Memory
746019 2023-05-21T10:37:00 Z JakobZorz Connecting Supertrees (IOI20_supertrees) C++14
11 / 100
 194 ms 22604 KB 
#include "supertrees.h"
#include <vector>
using namespace std;

vector<vector<int>> answer;
int group_ids[1000];
vector<int> groups[1000];
int group_ids2[1000];
vector<int> groups2[1000];

void connect(int a, int b){
    answer[a][b]=1;
    answer[b][a]=1;
}

int construct(vector<vector<int>> p) {
    int n = p.size();
    answer=vector<vector<int>>(n,vector<int>(n,0));
    for(int i=0;i<n;i++){
        group_ids[i]=-1;
        group_ids2[i]=-1;
    }
    
    int curr_group=0;
    for(int i=0;i<n;i++){
        if(group_ids[i]!=-1)
            continue;
        group_ids[i]=curr_group;
        groups[curr_group].push_back(i);
        for(int j=i+1;j<n;j++){
            if(group_ids[j]!=-1)
                continue;
            bool valid=true;
            for(int node:groups[curr_group]){
                if(p[node][j]!=2){
                    valid=false;
                    break;
                }
            }
            
            if(valid){
                group_ids[j]=curr_group;
                groups[curr_group].push_back(j);
            }
        }
        curr_group++;
    }
    
    /*for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            if(p[i][j]==2&&group_ids[i]!=group_ids[j])
                return 0;
            if(p[i][j]==0&&group_ids[i]==group_ids[j])
                return 0;
        }
    }*/
    
    for(int i=0;i<curr_group;i++){
        if(groups[i].size()==1){
            int curr=groups[i][0];
            for(int j=0;j<n;j++){
                if(j==curr)
                    continue;
                if(p[curr][j]==1&&groups[group_ids[j]].size()!=1){
                    connect(curr,j);
                    break;
                }
            }
            continue;
        }
        /*if(groups[i].size()==2)
            return 0;*/
        for(int j=0;j<groups[i].size()-1;j++){
            connect(groups[i][j],groups[i][j+1]);
        }
        connect(groups[i][0],groups[i].back());
    }
    
    int curr_group2=0;
    for(int i=0;i<n;i++){
        if(group_ids2[i]!=-1&&groups[group_ids[i]].size()==1)
            continue;
        group_ids2[i]=curr_group;
        groups2[curr_group2].push_back(i);
        for(int j=i+1;j<n;j++){
            if(p[i][j]==1&&groups[group_ids[j]].size()==1){
                group_ids2[j]=curr_group2;
                groups2[curr_group2].push_back(j);
            }
        }
        curr_group2++;
    }
    
    for(int i=0;i<curr_group2;i++){
        for(int j=0;j<groups2[i].size()-1;j++){
            connect(groups2[i][j],groups2[i][j+1]);
        }
    }
    
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for(int j=0;j<groups[i].size()-1;j++){
      |                     ~^~~~~~~~~~~~~~~~~~~
supertrees.cpp:95:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |         for(int j=0;j<groups2[i].size()-1;j++){
      |                     ~^~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1248 KB Output is correct
7 Correct 175 ms 22604 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1248 KB Output is correct
7 Correct 175 ms 22604 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 8 ms 1252 KB Output is correct
13 Correct 180 ms 22432 KB Output is correct
14 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Incorrect 1 ms 340 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 43 ms 6128 KB Output is correct
5 Correct 180 ms 22564 KB Output is correct
6 Correct 174 ms 22432 KB Output is correct
7 Correct 194 ms 22476 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 44 ms 6064 KB Output is correct
10 Correct 169 ms 22468 KB Output is correct
11 Correct 172 ms 22508 KB Output is correct
12 Correct 179 ms 22508 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Incorrect 44 ms 5964 KB Too many ways to get from 24 to 39, should be 1 found no less than 2
17 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1248 KB Output is correct
7 Correct 175 ms 22604 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 8 ms 1252 KB Output is correct
13 Correct 180 ms 22432 KB Output is correct
14 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1248 KB Output is correct
7 Correct 175 ms 22604 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 8 ms 1252 KB Output is correct
13 Correct 180 ms 22432 KB Output is correct
14 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -