Submission #1032893

# Submission time Handle Problem Language Result Execution time Memory
1032893 2024-07-24T10:28:35 Z fv3 Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
160 ms 30200 KB
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

int construct(vector<vector<int>> p) 
{
	int n = p.size();

	for (int i = 0; i < n; i++)
		p[i].push_back(i);
	sort(p.begin(), p.end());

	// 1. Find all parts which are the same
	vector<vector<int>> parts = { {p[0].back()} };
	map<vector<int>, vector<int>> cycles;

	int l = 0, r = 1;
	while (r < n)
	{
		int i = 0;
		for (; i < n; i++)
		{
			if (p[r-1][i] != p[r][i])
				break;
		}

		if (i != n)
		{
			parts.push_back({p[r].back()});

			// Count 1's in last part
			int one_cnt = 0;
			for (int j = 0; j < n; j++)
			{
				if (p[r-1][j] == 1)
					one_cnt++;
			}

			if (one_cnt != r - l)
				return 0;

			vector<int> bs(n);
			for (int j = 0; j < n; j++)
			{
				if (p[r-1][j]) 
					bs[j] = 1;
			}

			cycles[bs].push_back(p[r-1].back());
			l = r;
		}
		else
		{
			parts.back().push_back(p[r].back());
		}

		r++;
	}

	// Count 1's in last part
	int one_cnt = 0;
	for (int j = 0; j < n; j++)
	{
		if (p[r-1][j] == 1)
			one_cnt++;
	}

	if (one_cnt != r - l)
		return 0;

	vector<int> bs(n);
	for (int j = 0; j < n; j++)
	{
		if (p[r-1][j]) 
			bs[j] = 1;
	}
	cycles[bs].push_back(r-1);

	// 2. Generate parts
	vector<vector<int>> answer(n, vector<int>(n));
	for (auto path : parts)
	{
		for (int i = 1; i < path.size(); i++)
		{
			answer[path[i]][path[i-1]] = 1;
			answer[path[i-1]][path[i]] = 1;
		}
	}

	// 3. Generate cycles
	for (auto cycle : cycles)
	{
		if (cycle.second.size() == 1)
			continue;

		if (cycle.second.size() == 2)
			return 0;

		for (int i = 1; i < cycle.second.size(); i++)
		{
			answer[cycle.second[i]][cycle.second[i-1]] = 1;
			answer[cycle.second[i-1]][cycle.second[i]] = 1;
		}
		answer[cycle.second[0]][cycle.second.back()] = 1;
		answer[cycle.second.back()][cycle.second[0]] = 1;
	}

	// 4. Profit
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:84:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |   for (int i = 1; i < path.size(); i++)
      |                   ~~^~~~~~~~~~~~~
supertrees.cpp:100:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |   for (int i = 1; i < cycle.second.size(); i++)
      |                   ~~^~~~~~~~~~~~~~~~~~~~~
# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 8 ms 1424 KB Output is correct
7 Correct 129 ms 25876 KB Output is correct
# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 8 ms 1424 KB Output is correct
7 Correct 129 ms 25876 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1616 KB Output is correct
13 Correct 126 ms 30032 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 56 ms 12116 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 6996 KB Output is correct
21 Correct 123 ms 26040 KB Output is correct
22 Correct 160 ms 27672 KB Output is correct
23 Correct 126 ms 25940 KB Output is correct
24 Correct 127 ms 29908 KB Output is correct
25 Correct 56 ms 12112 KB Output is correct
26 Correct 64 ms 12884 KB Output is correct
27 Correct 128 ms 25940 KB Output is correct
28 Correct 126 ms 29900 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 5 ms 1656 KB Output is correct
9 Correct 133 ms 30200 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 5 ms 1368 KB Output is correct
13 Correct 120 ms 26096 KB Output is correct
14 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -
# 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 43 ms 7036 KB Output is correct
5 Correct 129 ms 25936 KB Output is correct
6 Correct 118 ms 27728 KB Output is correct
7 Correct 128 ms 25940 KB Output is correct
8 Incorrect 0 ms 348 KB Too many ways to get from 0 to 4, should be 0 found no less than 1
9 Halted 0 ms 0 KB -
# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 8 ms 1424 KB Output is correct
7 Correct 129 ms 25876 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1616 KB Output is correct
13 Correct 126 ms 30032 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 56 ms 12116 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 6996 KB Output is correct
21 Correct 123 ms 26040 KB Output is correct
22 Correct 160 ms 27672 KB Output is correct
23 Correct 126 ms 25940 KB Output is correct
24 Correct 127 ms 29908 KB Output is correct
25 Correct 56 ms 12112 KB Output is correct
26 Correct 64 ms 12884 KB Output is correct
27 Correct 128 ms 25940 KB Output is correct
28 Correct 126 ms 29900 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1656 KB Output is correct
37 Correct 133 ms 30200 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 5 ms 1368 KB Output is correct
41 Correct 120 ms 26096 KB Output is correct
42 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -
# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 8 ms 1424 KB Output is correct
7 Correct 129 ms 25876 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1616 KB Output is correct
13 Correct 126 ms 30032 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 56 ms 12116 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 6996 KB Output is correct
21 Correct 123 ms 26040 KB Output is correct
22 Correct 160 ms 27672 KB Output is correct
23 Correct 126 ms 25940 KB Output is correct
24 Correct 127 ms 29908 KB Output is correct
25 Correct 56 ms 12112 KB Output is correct
26 Correct 64 ms 12884 KB Output is correct
27 Correct 128 ms 25940 KB Output is correct
28 Correct 126 ms 29900 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1656 KB Output is correct
37 Correct 133 ms 30200 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 5 ms 1368 KB Output is correct
41 Correct 120 ms 26096 KB Output is correct
42 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -