oj.uz

Submission #746008

# Submission time Handle Problem Language Result Execution time Memory
746008 2023-05-21T10:32:26 Z JakobZorz Connecting Supertrees (IOI20_supertrees) C++14
11 / 100
 231 ms 22436 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&&group_ids[i]!=-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){
                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 0 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 344 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 9 ms 1248 KB Output is correct
7 Correct 213 ms 22372 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 344 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 9 ms 1248 KB Output is correct
7 Correct 213 ms 22372 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1260 KB Output is correct
13 Correct 188 ms 22404 KB Output is correct
14 Incorrect 1 ms 340 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 0 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 1 ms 340 KB Output is correct
4 Correct 56 ms 5952 KB Output is correct
5 Correct 181 ms 22436 KB Output is correct
6 Correct 230 ms 22424 KB Output is correct
7 Correct 231 ms 22368 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 48 ms 5836 KB Output is correct
10 Correct 195 ms 22272 KB Output is correct
11 Correct 190 ms 22376 KB Output is correct
12 Correct 191 ms 22376 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Incorrect 47 ms 5900 KB Too many ways to get from 0 to 278, 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 0 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 344 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 9 ms 1248 KB Output is correct
7 Correct 213 ms 22372 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1260 KB Output is correct
13 Correct 188 ms 22404 KB Output is correct
14 Incorrect 1 ms 340 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 0 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 344 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 9 ms 1248 KB Output is correct
7 Correct 213 ms 22372 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1260 KB Output is correct
13 Correct 188 ms 22404 KB Output is correct
14 Incorrect 1 ms 340 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -