oj.uz

Submission #777704

# Submission time Handle Problem Language Result Execution time Memory
777704 2023-07-09T13:33:43 Z Minindu206 Connecting Supertrees (IOI20_supertrees) C++14
0 / 100
 1000 ms 10108 KB 
#include "supertrees.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
struct DSU
{
	/* data */
	int n;
	vector<int> par, sz;
	void init(int _n)
	{
		n = _n;
		par.resize(n + 1, -1);
		sz.resize(n + 1, 0);
	}
	int finds(int a)
	{
		if(par[a] == -1)
			return a;
		return par[a] = finds(par[a]);
	}
	void unites(int a, int b)
	{
		int x = finds(a);
		int y = finds(b);
		if(x != y)
		{
			if(sz[x] < sz[y])
				swap(x, y);
			par[y] = x;
			sz[x] += sz[y];
		}
	}
};
int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	DSU d;
	d.init(n);
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
			if(i == j)
				continue;
			if(p[i][j] == 3)
				return 0;
			if(p[i][j])
			{
				d.unites(i, j);
				for(int k=0;k<n;k++)
				{
					d.unites(j, k);
					if(k == j || k == i)
						continue;
					if(!p[j][k])
						continue;
					if(p[i][k])
					{
						continue;
					}
					return 0;
				}
			}
		}
	}
	map<int, vector<int>> mp;
	for(int i=0;i<n;i++)
	{
		mp[d.finds(i)].push_back(i);
	}
	vector<vector<int>> ans(n, vector<int>(n, 0));
	for(auto a:mp)
	{
		int st = -1;
		for(auto b:a.second)
		{
			if(st == -1)
				st = b;
			else
			{
				ans[st][b] = 1;
				ans[b][st] = 1;
				st = b;
			}
		}
	}
	build(ans);
	return 1;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 53 ms 1188 KB Output is correct
7 Execution timed out 1066 ms 10108 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 53 ms 1188 KB Output is correct
7 Execution timed out 1066 ms 10108 KB Time limit exceeded
8 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 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Incorrect 1 ms 212 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 1 ms 212 KB Output is correct
2 Incorrect 1 ms 304 KB Too few ways to get from 0 to 1, should be 2 found 1
3 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 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 53 ms 1188 KB Output is correct
7 Execution timed out 1066 ms 10108 KB Time limit exceeded
8 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 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 53 ms 1188 KB Output is correct
7 Execution timed out 1066 ms 10108 KB Time limit exceeded
8 Halted 0 ms 0 KB -