oj.uz

Submission #826990

# Submission time Handle Problem Language Result Execution time Memory
826990 2023-08-16T07:51:21 Z tomruk Connecting Supertrees (IOI20_supertrees) C++17
11 / 100
 176 ms 22836 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> answer(n,(vector<int>(n,0)));
	vector<bool> used(n,0);
	function<void(int)> dfs = [&](int v)->void{
		used[v] = 1;
		for(int i = 0;i<n;i++){
			// cout << v << ' ' << i << endl;
			// cout << p[v][i] << endl;
			if(!used[i] && p[v][i]){
				dfs(i);
				answer[v][i] = 1;
				answer[i][v] = 1;
			}
		}
	};
	for(int i = 0;i<n;i++){
		if(used[i])continue;
		int now = i;
		vector<int> tmp;
		int num = -1;
		set<int> s;
		for(int j = 0;j<n;j++){
			if(p[now][j] >= 2){
				s.insert(j);
			}
		}
		// cout << "HEy" << endl;
		while(s.size()){
			// cout << now << ' ' << i << endl;
			tmp.push_back(now);
			used[now] = 1;
			vector<int> del;
			for(auto u:s){
				if(p[now][u] < 2){
					del.push_back(u);
				}
			}
			for(auto u:del)
				s.erase(u);
			if(s.empty())
				break;
			now = *s.begin();
		}
		// cout << tmp.size() << endl;
		if(tmp.empty())
			continue;
		if(tmp.size() < 3){
			return 0;
		}
		for(int i = 0;i<tmp.size();i++){
			answer[tmp[i]][tmp[(i + 1)%tmp.size()]] = 1;
			answer[tmp[(i + 1)%tmp.size()]][tmp[i]] = 1;
		}
		if(p[tmp[0]][tmp[1]] == 3){
			if(tmp.size() < 4)
				return 0;
			answer[tmp[i]][tmp[(i + 2)%tmp.size()]] = 1;
			answer[tmp[(i + 2)%tmp.size()]][tmp[i]] = 1;
		}
		for(auto u:tmp){
			dfs(u);
		}
	}
	for(int i = 0;i<n;i++){
		// cout << used[i] << endl;
		if(!used[i])
			dfs(i);
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:54:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   for(int i = 0;i<tmp.size();i++){
      |                 ~^~~~~~~~~~~
supertrees.cpp:24:7: warning: unused variable 'num' [-Wunused-variable]
   24 |   int num = -1;
      |       ^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 176 ms 22696 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 176 ms 22696 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 153 ms 22668 KB Output is correct
14 Incorrect 1 ms 212 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 212 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 9 ms 1208 KB Output is correct
9 Correct 155 ms 22836 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 161 ms 22452 KB Output is correct
14 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 304 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 39 ms 6200 KB Output is correct
5 Correct 173 ms 22624 KB Output is correct
6 Correct 164 ms 22672 KB Output is correct
7 Correct 164 ms 22712 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 39 ms 5964 KB Output is correct
10 Correct 163 ms 22380 KB Output is correct
11 Correct 157 ms 22476 KB Output is correct
12 Correct 159 ms 22332 KB Output is correct
13 Correct 1 ms 296 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Incorrect 41 ms 6036 KB Too many ways to get from 23 to 253, 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 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 176 ms 22696 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 153 ms 22668 KB Output is correct
14 Incorrect 1 ms 212 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 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 176 ms 22696 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 153 ms 22668 KB Output is correct
14 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -