Submission #746024

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
746024	2023-05-21T10:39:20 Z	JakobZorz	Connecting Supertrees (IOI20_supertrees)	C++14	11 / 100	216 ms	22180 KB

supertrees

#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];
bool vis[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);
                    vis[curr]=true;
                    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]);
            vis[groups[i][j]]=true;
        }
        connect(groups[i][0],groups[i].back());
        vis[groups[i].back()]=true;
    }
    
    int curr_group2=0;
    for(int i=0;i<n;i++){
        if(group_ids2[i]!=-1&&!vis[i])
            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&&!vis[i]){
                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:75:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for(int j=0;j<groups[i].size()-1;j++){
      |                     ~^~~~~~~~~~~~~~~~~~~
supertrees.cpp:99:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |         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	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	1148 KB	Output is correct
7	Correct	172 ms	22180 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	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	1148 KB	Output is correct
7	Correct	172 ms	22180 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	8 ms	1240 KB	Output is correct
13	Correct	191 ms	22064 KB	Output is correct
14	Incorrect	0 ms	340 KB	Answer gives possible 1 while actual possible 0
15	Halted	0 ms	0 KB	-

Subtask #3
0 / 19.0

#	Verdict	Memory	Grader output
1	Correct	340 KB	Output is correct
2	Correct	272 KB	Output is correct
3	Correct	340 KB	Output is correct
4	Incorrect	340 KB	Answer gives possible 1 while actual possible 0
5	Halted	0 KB	-

Subtask #4
0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	52 ms	5852 KB	Output is correct
5	Correct	195 ms	22040 KB	Output is correct
6	Correct	216 ms	22068 KB	Output is correct
7	Correct	190 ms	22164 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	59 ms	5796 KB	Output is correct
10	Correct	190 ms	22068 KB	Output is correct
11	Correct	193 ms	22076 KB	Output is correct
12	Correct	179 ms	22128 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Incorrect	57 ms	5796 KB	Too few ways to get from 0 to 39, should be 2 found 0
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	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	1148 KB	Output is correct
7	Correct	172 ms	22180 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	8 ms	1240 KB	Output is correct
13	Correct	191 ms	22064 KB	Output is correct
14	Incorrect	0 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	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	7 ms	1148 KB	Output is correct
7	Correct	172 ms	22180 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	8 ms	1240 KB	Output is correct
13	Correct	191 ms	22064 KB	Output is correct
14	Incorrect	0 ms	340 KB	Answer gives possible 1 while actual possible 0
15	Halted	0 ms	0 KB	-

Submission #746024

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 0 / 10.0

Subtask #3 0 / 19.0

Subtask #4 0 / 35.0

Subtask #5 0 / 21.0

Subtask #6 0 / 4.0

Subtask #1
11.0 / 11.0

Subtask #2
0 / 10.0

Subtask #3
0 / 19.0

Subtask #4
0 / 35.0

Subtask #5
0 / 21.0

Subtask #6
0 / 4.0