oj.uz

Submission #731179

# Submission time Handle Problem Language Result Execution time Memory
731179 2023-04-27T06:29:04 Z blue Chameleon's Love (JOI20_chameleon) C++17
100 / 100
 60 ms 4400 KB 
#include "chameleon.h"
#include <bits/stdc++.h>

#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;

using vi = vector<int>;
using vvi = vector<vi>;
using pii = pair<int, int>;
using vpii = vector<pii>;

namespace
{
	const int mx = 500;

	int variable_example = 0;

	#define sz(x) int(x.size())



	vvi isedge(1 + 2*mx, vi(1 + 2*mx, 0));
	vi edge[1 + 2*mx];


	void add_edge(int u, int v)
	{
		isedge[u][v] = isedge[v][u] = 1;
		edge[u].push_back(v);
		edge[v].push_back(u);
	}


	int addQuery(vi lst, int u)
	{
		lst.push_back(u);
		return Query(lst);
	}


	int findEdge(int u, vi lst) //lst is list of homogenous-bipartite-colored nodes
	{
		if(addQuery(lst, u) == sz(lst) + 1)
			return -1;

		while(sz(lst) > 1)
		{
			vi lstleft, lstright;
			for(int i = 0; i < sz(lst); i++)
			{
				if(i < sz(lst)/2)
					lstleft.push_back(lst[i]);
				else
					lstright.push_back(lst[i]);
			}

			if(addQuery(lstleft, u) != sz(lstleft) + 1)
				lst = lstleft;
			else
				lst = lstright;
		}

		return lst[0];
	}

};


void Solve(int N)
{
	for(int u = 1; u <= 2*N; u++)
	{
		vi col(1 + 2*N, -1);
		queue<int> tbv;

		vi collist[2];

		for(int i = 1; i < u; i++)
		{
			if(col[i] != -1)
				continue;

			col[i] = 0;

			tbv.push(i);

			while(!tbv.empty())
			{
				int x = tbv.front();
				tbv.pop();

				for(int y : edge[x])
				{
					if(col[y] != -1)
						continue;

					col[y] = col[x] ^ 1;

					tbv.push(y);
				}
			}
		}

		for(int i = 1; i < u; i++)
			collist[col[i]].push_back(i);

		for(int z = 0; z < 2; z++)
		{
			for(int t = 0; t < 3; t++)
			{
				int d = findEdge(u, collist[z]);
				if(d == -1)
					break;
				else
				{
					add_edge(u, d);
					// cerr << "adding edge " << u << ' ' << d << '\n';

					vi nl;
					for(int h : collist[z])
						if(h != d)
							nl.push_back(h);

					collist[z] = nl;
				}
			}
		}
	}




	vpii anslist;

	vi love(1 + 2*N, 0);

	for(int u = 1; u <= 2*N; u++)
	{
		if(sz(edge[u]) == 1)
		{
			;
		}
		else
		{
			assert(sz(edge[u]) == 3);

			if(Query({u, edge[u][0], edge[u][1]}) == 1)
				love[u] = edge[u][2];
			else if(Query({u, edge[u][0], edge[u][2]}) == 1)
				love[u] = edge[u][1];
			else
				love[u] = edge[u][0];
		}
	}

	for(int u = 1; u <= 2*N; u++)
	{
		for(int v = u+1; v <= 2*N; v++)
		{
			if(!isedge[u][v])
				continue;

			if(love[u] == v)
				continue;

			if(love[v] == u)
				continue;

			Answer(u, v);
		}
	}

	// cerr << "anslist size = " << sz(anslist) << '\n';

	// for(pii al : anslist)
	// {
	// 	if(al.first < al.second)
	// 	{
	// 		cerr << "answer : " << al.first << ' ' << al.second << '\n';
	// 		// Answer(al.first, al.second);
	// 	}
	// }
}

Compilation message

chameleon.cpp:17:6: warning: '{anonymous}::variable_example' defined but not used [-Wunused-variable]
   17 |  int variable_example = 0;
      |      ^~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4268 KB Output is correct
2 Correct 2 ms 4304 KB Output is correct
3 Correct 34 ms 4392 KB Output is correct
4 Correct 32 ms 4396 KB Output is correct
5 Correct 30 ms 4304 KB Output is correct
6 Correct 33 ms 4400 KB Output is correct
7 Correct 31 ms 4400 KB Output is correct
8 Correct 31 ms 4400 KB Output is correct
9 Correct 30 ms 4392 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4304 KB Output is correct
2 Correct 3 ms 4304 KB Output is correct
3 Correct 2 ms 4304 KB Output is correct
4 Correct 2 ms 4176 KB Output is correct
5 Correct 3 ms 4316 KB Output is correct
6 Correct 2 ms 4176 KB Output is correct
7 Correct 2 ms 4176 KB Output is correct
8 Correct 2 ms 4304 KB Output is correct
9 Correct 3 ms 4176 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4304 KB Output is correct
2 Correct 3 ms 4304 KB Output is correct
3 Correct 2 ms 4304 KB Output is correct
4 Correct 2 ms 4176 KB Output is correct
5 Correct 3 ms 4316 KB Output is correct
6 Correct 2 ms 4176 KB Output is correct
7 Correct 2 ms 4176 KB Output is correct
8 Correct 2 ms 4304 KB Output is correct
9 Correct 3 ms 4176 KB Output is correct
10 Correct 3 ms 4252 KB Output is correct
11 Correct 4 ms 4304 KB Output is correct
12 Correct 3 ms 4304 KB Output is correct
13 Correct 3 ms 4304 KB Output is correct
14 Correct 3 ms 4304 KB Output is correct
15 Correct 3 ms 4304 KB Output is correct
16 Correct 3 ms 4304 KB Output is correct
17 Correct 3 ms 4304 KB Output is correct
18 Correct 3 ms 4304 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4304 KB Output is correct
2 Correct 3 ms 4224 KB Output is correct
3 Correct 55 ms 4396 KB Output is correct
4 Correct 58 ms 4388 KB Output is correct
5 Correct 58 ms 4384 KB Output is correct
6 Correct 53 ms 4384 KB Output is correct
7 Correct 55 ms 4304 KB Output is correct
8 Correct 56 ms 4392 KB Output is correct
9 Correct 58 ms 4388 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4268 KB Output is correct
2 Correct 2 ms 4304 KB Output is correct
3 Correct 34 ms 4392 KB Output is correct
4 Correct 32 ms 4396 KB Output is correct
5 Correct 30 ms 4304 KB Output is correct
6 Correct 33 ms 4400 KB Output is correct
7 Correct 31 ms 4400 KB Output is correct
8 Correct 31 ms 4400 KB Output is correct
9 Correct 30 ms 4392 KB Output is correct
10 Correct 3 ms 4304 KB Output is correct
11 Correct 3 ms 4304 KB Output is correct
12 Correct 2 ms 4304 KB Output is correct
13 Correct 2 ms 4176 KB Output is correct
14 Correct 3 ms 4316 KB Output is correct
15 Correct 2 ms 4176 KB Output is correct
16 Correct 2 ms 4176 KB Output is correct
17 Correct 2 ms 4304 KB Output is correct
18 Correct 3 ms 4176 KB Output is correct
19 Correct 3 ms 4252 KB Output is correct
20 Correct 4 ms 4304 KB Output is correct
21 Correct 3 ms 4304 KB Output is correct
22 Correct 3 ms 4304 KB Output is correct
23 Correct 3 ms 4304 KB Output is correct
24 Correct 3 ms 4304 KB Output is correct
25 Correct 3 ms 4304 KB Output is correct
26 Correct 3 ms 4304 KB Output is correct
27 Correct 3 ms 4304 KB Output is correct
28 Correct 2 ms 4304 KB Output is correct
29 Correct 3 ms 4224 KB Output is correct
30 Correct 55 ms 4396 KB Output is correct
31 Correct 58 ms 4388 KB Output is correct
32 Correct 58 ms 4384 KB Output is correct
33 Correct 53 ms 4384 KB Output is correct
34 Correct 55 ms 4304 KB Output is correct
35 Correct 56 ms 4392 KB Output is correct
36 Correct 58 ms 4388 KB Output is correct
37 Correct 60 ms 4304 KB Output is correct
38 Correct 31 ms 4304 KB Output is correct
39 Correct 54 ms 4400 KB Output is correct
40 Correct 59 ms 4388 KB Output is correct
41 Correct 53 ms 4396 KB Output is correct
42 Correct 33 ms 4392 KB Output is correct
43 Correct 58 ms 4388 KB Output is correct
44 Correct 56 ms 4400 KB Output is correct
45 Correct 55 ms 4368 KB Output is correct