oj.uz

Submission #745993

# Submission time Handle Problem Language Result Execution time Memory
745993 2023-05-21T10:26:11 Z JakobZorz Connecting Supertrees (IOI20_supertrees) C++14
11 / 100
 249 ms 22808 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 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 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 183 ms 22544 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 0 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 183 ms 22544 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 344 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 1236 KB Output is correct
13 Correct 201 ms 22808 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 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 1 ms 340 KB Output is correct
4 Correct 47 ms 6304 KB Output is correct
5 Correct 187 ms 22676 KB Output is correct
6 Correct 196 ms 22660 KB Output is correct
7 Correct 241 ms 22664 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 49 ms 6220 KB Output is correct
10 Correct 249 ms 22708 KB Output is correct
11 Correct 214 ms 22680 KB Output is correct
12 Correct 205 ms 22660 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Incorrect 49 ms 6296 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 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 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 183 ms 22544 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 344 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 1236 KB Output is correct
13 Correct 201 ms 22808 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 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 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 183 ms 22544 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 344 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 1236 KB Output is correct
13 Correct 201 ms 22808 KB Output is correct
14 Incorrect 1 ms 340 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -