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Submission #867104

# Submission time Handle Problem Language Result Execution time Memory
867104 2023-10-27T16:57:39 Z Ninedesu Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 164 ms 30548 KB 
#include "supertrees.h"
#include<bits/stdc++.h>
using namespace std;

const int N=1001;
int pa1[N],pa2[N],compo1[N],compo2[N];
bool vis1[N],vis2[N],chk1,chk2;
vector<int>adj1[N],adj2[N],root1,root2;

int dsu1(int x){
	if(pa1[x]==x)return x;
	else return pa1[x]=dsu1(pa1[x]);
}

int dsu2(int x){
    if(pa2[x]==x)return x;
    else return pa2[x]=dsu2(pa2[x]);
}

int construct(vector<vector<int>> p) {
	int n=p.size();
	vector<vector<int>> answer;
	for (int i = 0; i < n; i++) {
		vector<int> row;
		row.resize(n);
		answer.push_back(row);
		pa1[i]=i;
		pa2[i]=i;
	}
	for(int i=0; i<n; i++){
		for(int j=i+1; j<n; j++){
			if(p[i][j]==3)return 0;
			if(p[i][j]!=p[j][i])return 0;
			if(p[i][j]==1)pa1[dsu1(j)]=dsu1(i);
		}
	}
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            if(i!=j&&dsu1(i)==dsu1(j)){
                if(p[i][j]==0||p[i][j]==2){
                    return 0;
                }
                adj1[i].push_back(j);
                adj1[j].push_back(i);
            }
        }
    }
    for(int i=0; i<n; i++){
        if(vis1[i])continue;
        root1.push_back(i);
        compo1[i]=i;
        for(int j:adj1[i]){
            compo1[j]=i;
            vis1[j]=true;
            answer[i][j]=1;
            answer[j][i]=1;
        }
    }
    for(int i=0; i<root1.size(); i++){
        for(int j=i+1; j<root1.size(); j++){
            int a=root1[i],b=root1[j];
            if(p[a][b]==2)pa2[dsu2(a)]=dsu2(b);
        }
    }
    for(int i:root1){
        for(int j:root1){
            if(i!=j&&dsu2(i)==dsu2(j)){
                if(p[i][j]==0||p[i][j]==1){
                    return 0;
                }
                adj2[i].push_back(j);
                adj2[j].push_back(i);
            }
        }
    }
    for(int i:root1){
        if(vis2[i])continue;
        root2.push_back(i);
        compo2[i]=i;
        for(int j:adj2[i]){
            compo2[j]=i;
            vis2[j]=true;
        }
    }
    for(int i:root2){
        for(int j=1; j<adj2[i].size(); j++){
            answer[adj2[i][j]][adj2[i][j-1]]=1;
            answer[adj2[i][j-1]][adj2[i][j]]=1;
        }
		if(adj2[i].empty())continue;
        answer[adj2[i][0]][i]=1;
        answer[i][adj2[i][0]]=1;
        answer[adj2[i][adj2[i].size()-1]][i]=1;
        answer[i][adj2[i][adj2[i].size()-1]]=1;
    }

	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:59:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for(int i=0; i<root1.size(); i++){
      |                  ~^~~~~~~~~~~~~
supertrees.cpp:60:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for(int j=i+1; j<root1.size(); j++){
      |                        ~^~~~~~~~~~~~~
supertrees.cpp:86:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |         for(int j=1; j<adj2[i].size(); j++){
      |                      ~^~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 412 KB Output is correct
6 Correct 7 ms 1628 KB Output is correct
7 Correct 164 ms 30548 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 412 KB Output is correct
6 Correct 7 ms 1628 KB Output is correct
7 Correct 164 ms 30548 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 159 ms 22168 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 12092 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 39 ms 5972 KB Output is correct
21 Correct 158 ms 23104 KB Output is correct
22 Correct 153 ms 22100 KB Output is correct
23 Correct 161 ms 26180 KB Output is correct
24 Correct 160 ms 22092 KB Output is correct
25 Correct 59 ms 12116 KB Output is correct
26 Correct 57 ms 12092 KB Output is correct
27 Correct 161 ms 28236 KB Output is correct
28 Correct 156 ms 22084 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 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 0 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 39 ms 5980 KB Output is correct
5 Correct 158 ms 23096 KB Output is correct
6 Correct 153 ms 22096 KB Output is correct
7 Correct 162 ms 26196 KB Output is correct
8 Incorrect 0 ms 348 KB Too many ways to get from 0 to 3, should be 2 found no less than 3
9 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 412 KB Output is correct
6 Correct 7 ms 1628 KB Output is correct
7 Correct 164 ms 30548 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 159 ms 22168 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 12092 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 39 ms 5972 KB Output is correct
21 Correct 158 ms 23104 KB Output is correct
22 Correct 153 ms 22100 KB Output is correct
23 Correct 161 ms 26180 KB Output is correct
24 Correct 160 ms 22092 KB Output is correct
25 Correct 59 ms 12116 KB Output is correct
26 Correct 57 ms 12092 KB Output is correct
27 Correct 161 ms 28236 KB Output is correct
28 Correct 156 ms 22084 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 348 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 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 412 KB Output is correct
6 Correct 7 ms 1628 KB Output is correct
7 Correct 164 ms 30548 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 159 ms 22168 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 12092 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 39 ms 5972 KB Output is correct
21 Correct 158 ms 23104 KB Output is correct
22 Correct 153 ms 22100 KB Output is correct
23 Correct 161 ms 26180 KB Output is correct
24 Correct 160 ms 22092 KB Output is correct
25 Correct 59 ms 12116 KB Output is correct
26 Correct 57 ms 12092 KB Output is correct
27 Correct 161 ms 28236 KB Output is correct
28 Correct 156 ms 22084 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -