oj.uz

Submission #470424

# Submission time Handle Problem Language Result Execution time Memory
470424 2021-09-03T17:32:09 Z jazzup Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 270 ms 22148 KB 
#include "supertrees.h"
#include <vector>
#include <cstdio>

using namespace std;

int par[1010];
vector<int> heads;

int findPar(int n){
	if(par[n]==n)return n;

	return par[n]=findPar(par[n]);
}

bool c[1010];
vector<vector<int> > answer;

int construct(vector<vector<int> > p) {
	int n = p.size();
	for(int i=0;i<=n;i++){
		par[i]=i;
	}
	
	

	for(int i=0;i<n;i++){
		vector<int> vv;
		answer.push_back(vv);
		for(int j=0;j<n;j++){
			answer[i].push_back(0);
		}
	}

	for(int i=0;i<n-1;i++){
		for(int j=i+1;j<n;j++){
			if(p[i][j]!=p[j][i])return 0;
		}
	}
	
	for(int i=0;i<n-1;i++){
		for(int j=i+1;j<n;j++){
			if(p[i][j]==3)return 0;

			if(p[i][j]==1){
				if(findPar(i)<findPar(j)){
					par[findPar(j)]=findPar(i);
					answer[j][findPar(j)]=1;
					answer[findPar(j)][j]=1;
				}
				else if(findPar(i)>findPar(j)){
					par[findPar(i)]=findPar(j);
					answer[i][findPar(i)]=1;
					answer[findPar(i)][i]=1;
				}
			}
		}
	}

	for(int i=0;i<n-1;i++){
		for(int j=i+1;j<n;j++){
			// if(i==j)continue;
			if(p[i][j]==2){
				if(findPar(i)==findPar(j)){
					return 0;
				}

				c[findPar(i)]=true;
				c[findPar(j)]=true;

				if(findPar(i)<findPar(j)){
					par[findPar(j)]=findPar(i);
				}
				else if(findPar(i)>findPar(j)){
					par[findPar(i)]=findPar(j);
				}
			}
		}
	}

	for(int i=0;i<n;i++){
		if(c[i])heads.push_back(i);
	}

	if(!heads.empty()){
		for(int i=0;i<heads.size()-1;i++){
			answer[heads[i]][heads[i+1]]=1;
			answer[heads[i+1]][heads[i]]=1;
		}
	
		answer[heads[heads.size()-1]][heads[0]]=1;
		answer[heads[0]][heads[heads.size()-1]]=1;
	}

	if(heads.size()==2)return 0;

	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(i==j)continue;
			else if(p[i][j]==0){
				if(findPar(i)==findPar(j)){
					return 0;
				}
			}
		}
	}

	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:86:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |   for(int i=0;i<heads.size()-1;i++){
      |               ~^~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1168 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1168 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1208 KB Output is correct
13 Correct 245 ms 22140 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 5 ms 716 KB Output is correct
17 Correct 122 ms 12160 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 63 ms 5736 KB Output is correct
21 Correct 254 ms 22084 KB Output is correct
22 Correct 256 ms 22128 KB Output is correct
23 Correct 270 ms 22032 KB Output is correct
24 Correct 248 ms 22084 KB Output is correct
25 Correct 114 ms 12228 KB Output is correct
26 Correct 108 ms 12160 KB Output is correct
27 Correct 261 ms 22084 KB Output is correct
28 Correct 250 ms 22148 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Incorrect 0 ms 204 KB Answer gives possible 0 while actual possible 1
6 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Incorrect 0 ms 204 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1168 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1208 KB Output is correct
13 Correct 245 ms 22140 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 5 ms 716 KB Output is correct
17 Correct 122 ms 12160 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 63 ms 5736 KB Output is correct
21 Correct 254 ms 22084 KB Output is correct
22 Correct 256 ms 22128 KB Output is correct
23 Correct 270 ms 22032 KB Output is correct
24 Correct 248 ms 22084 KB Output is correct
25 Correct 114 ms 12228 KB Output is correct
26 Correct 108 ms 12160 KB Output is correct
27 Correct 261 ms 22084 KB Output is correct
28 Correct 250 ms 22148 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Incorrect 0 ms 204 KB Answer gives possible 0 while actual possible 1
34 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1168 KB Output is correct
7 Correct 252 ms 22136 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1208 KB Output is correct
13 Correct 245 ms 22140 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 5 ms 716 KB Output is correct
17 Correct 122 ms 12160 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 63 ms 5736 KB Output is correct
21 Correct 254 ms 22084 KB Output is correct
22 Correct 256 ms 22128 KB Output is correct
23 Correct 270 ms 22032 KB Output is correct
24 Correct 248 ms 22084 KB Output is correct
25 Correct 114 ms 12228 KB Output is correct
26 Correct 108 ms 12160 KB Output is correct
27 Correct 261 ms 22084 KB Output is correct
28 Correct 250 ms 22148 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Incorrect 0 ms 204 KB Answer gives possible 0 while actual possible 1
34 Halted 0 ms 0 KB -