oj.uz

Submission #975306

# Submission time Handle Problem Language Result Execution time Memory
975306 2024-05-04T18:10:58 Z raspy Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 153 ms 22684 KB 
#include "supertrees.h"
#include <vector>
#include <iostream>

using namespace std;

bool obd[20005];
int dis[20005];
vector<int> el[20005];

int par(int x)
{
	return dis[x] = (dis[x] == x ? x : par(dis[x]));
}

void zd(int x, int y, bool zlij = true)
{
	x = par(x);
	y = par(y);
	if (x == y)
		return;
	if (el[x].size() < el[y].size())
		swap(x, y);
	if (zlij)
	{
		for (auto e : el[y])
			el[x].push_back(e);
	}
	el[y].clear();
	dis[y] = x;
	return;
}

int construct(vector<vector<int>> p)
{
	int n = p.size();
	vector<vector<int>> gr(n, vector<int>(n, 0));
	for (int i = 0; i < n; i++)
	{
		el[i].push_back(i);
		dis[i] = i;
	}
	for (int i = 0; i < n; i++)
		for (int j = i+1; j < n; j++)
		{
			if (p[i][j] == 1 && par(i)-par(j))
			{
				gr[par(i)][par(j)] = gr[par(j)][par(i)] = 1;
				zd(i, j, 0);
			}
		}
	int dalje = 0;
	for (int i = 0; i < n; i++)
		for (int j = i+1; j < n; j++)
		{
			if (p[i][j] == 2 && par(i)-par(j))
			{
				dalje = 1;
				zd(i, j);
			}
		}
	if (dalje)
	{
		for (int i = 0; i < n; i++)
		{
			int x = par(i);
			if (obd[x])
				continue;
			obd[x] = 1;			
			vector<int> tr = el[x];
			if (tr.size() <= 2)
				return 0;
			tr.push_back(x);
			int pr = x;
			for (auto v : el[x])
				gr[v][pr] = gr[pr][v] = 1;
		}
	}
	for (int i = 0; i < n; i++)
		for (int j = i+1; j < n; j++)
			if (p[i][j] == 0 && par(i) == par(j))
				return 0;
	build(gr);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 860 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 7 ms 1624 KB Output is correct
7 Correct 145 ms 22612 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 860 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 7 ms 1624 KB Output is correct
7 Correct 145 ms 22612 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 1 ms 684 KB Output is correct
10 Correct 0 ms 860 KB Output is correct
11 Correct 1 ms 860 KB Output is correct
12 Correct 7 ms 1628 KB Output is correct
13 Correct 152 ms 22500 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 3 ms 1624 KB Output is correct
17 Correct 68 ms 12772 KB Output is correct
18 Correct 1 ms 860 KB Output is correct
19 Correct 1 ms 860 KB Output is correct
20 Correct 38 ms 6224 KB Output is correct
21 Correct 149 ms 22500 KB Output is correct
22 Correct 150 ms 22608 KB Output is correct
23 Correct 152 ms 22612 KB Output is correct
24 Correct 150 ms 22504 KB Output is correct
25 Correct 63 ms 12528 KB Output is correct
26 Correct 68 ms 12628 KB Output is correct
27 Correct 153 ms 22684 KB Output is correct
28 Correct 149 ms 22608 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 856 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 0 ms 860 KB Output is correct
5 Incorrect 1 ms 860 KB b[0][0] is not 0
6 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 856 KB Output is correct
2 Incorrect 0 ms 860 KB b[0][0] is not 0
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 860 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 7 ms 1624 KB Output is correct
7 Correct 145 ms 22612 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 1 ms 684 KB Output is correct
10 Correct 0 ms 860 KB Output is correct
11 Correct 1 ms 860 KB Output is correct
12 Correct 7 ms 1628 KB Output is correct
13 Correct 152 ms 22500 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 3 ms 1624 KB Output is correct
17 Correct 68 ms 12772 KB Output is correct
18 Correct 1 ms 860 KB Output is correct
19 Correct 1 ms 860 KB Output is correct
20 Correct 38 ms 6224 KB Output is correct
21 Correct 149 ms 22500 KB Output is correct
22 Correct 150 ms 22608 KB Output is correct
23 Correct 152 ms 22612 KB Output is correct
24 Correct 150 ms 22504 KB Output is correct
25 Correct 63 ms 12528 KB Output is correct
26 Correct 68 ms 12628 KB Output is correct
27 Correct 153 ms 22684 KB Output is correct
28 Correct 149 ms 22608 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 860 KB Output is correct
31 Correct 1 ms 860 KB Output is correct
32 Correct 0 ms 860 KB Output is correct
33 Incorrect 1 ms 860 KB b[0][0] is not 0
34 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 860 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 7 ms 1624 KB Output is correct
7 Correct 145 ms 22612 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 1 ms 684 KB Output is correct
10 Correct 0 ms 860 KB Output is correct
11 Correct 1 ms 860 KB Output is correct
12 Correct 7 ms 1628 KB Output is correct
13 Correct 152 ms 22500 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 3 ms 1624 KB Output is correct
17 Correct 68 ms 12772 KB Output is correct
18 Correct 1 ms 860 KB Output is correct
19 Correct 1 ms 860 KB Output is correct
20 Correct 38 ms 6224 KB Output is correct
21 Correct 149 ms 22500 KB Output is correct
22 Correct 150 ms 22608 KB Output is correct
23 Correct 152 ms 22612 KB Output is correct
24 Correct 150 ms 22504 KB Output is correct
25 Correct 63 ms 12528 KB Output is correct
26 Correct 68 ms 12628 KB Output is correct
27 Correct 153 ms 22684 KB Output is correct
28 Correct 149 ms 22608 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 860 KB Output is correct
31 Correct 1 ms 860 KB Output is correct
32 Correct 0 ms 860 KB Output is correct
33 Incorrect 1 ms 860 KB b[0][0] is not 0
34 Halted 0 ms 0 KB -