Submission #130665

#	Time	Username	Problem	Language	Result	Execution time	Memory
130665		tutis	Amusement Park (JOI17_amusement_park)	C++17	75 / 100	164 ms	7640 KiB

Joi

#include "Joi.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
mt19937_64 rng(1561561);
int bitas[11000];
vector<int>adj[11000];
set<int>aplankyta;
int t = 0;
set<pair<int, int>>EE;
void dfs(int v, int p = -2)
{
	if (aplankyta.count(v))
		return;
	EE.insert({v, p});
	EE.insert({p, v});
	aplankyta.insert(v);
	t++;
	t %= 60;
	bitas[v] = t;
	for (int x : adj[v])
	{
		dfs(x,v);
	}
}
void Joi(int N, int M, int A[], int B[], long long X, int T) {
	vector<int>PP(N);
	iota(PP.begin(), PP.end(), 0);
	shuffle(PP.begin(), PP.end(), mt19937_64(15651));
	for (int i = 0; i < M; i++)
	{
		adj[A[i]].push_back(B[i]);
		adj[B[i]].push_back(A[i]);
	}
	for (int i = 0; i < N; i++)
		shuffle(adj[i].begin(), adj[i].end(), rng);
	dfs(rng() % N);
	for (int i = 0; i < N; i++)
	{
		int s = 0;
		if ((X & (1ll << bitas[i])) > 0)
			s = 1;
		MessageBoard(i, s);
	}
}

Ioi

#include "Ioi.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
mt19937_64 rng(1561561);
int bitas[11000];
vector<int>adj[11000];
set<int>aplankyta;
int t = 0;
set<pair<int, int>>EE;
void dfs(int v, int p = -2)
{
	if (aplankyta.count(v))
		return;
	EE.insert({v, p});
	EE.insert({p, v});
	aplankyta.insert(v);
	t++;
	t %= 60;
	bitas[v] = t;
	for (int x : adj[v])
	{
		dfs(x,v);
	}
}
long long Ioi(int N, int M, int A[], int B[], int P, int V, int T)
{
	vector<int>PP(N);
	iota(PP.begin(), PP.end(), 0);
	shuffle(PP.begin(), PP.end(), mt19937_64(15651));
	for (int i = 0; i < M; i++)
	{
		adj[A[i]].push_back(B[i]);
		adj[B[i]].push_back(A[i]);
	}
	for (int i = 0; i < N; i++)
		shuffle(adj[i].begin(), adj[i].end(), rng);
	dfs(rng() % N);
	ll X = 0;
	vector<int>stak = {P};
	set<int>bitai;
	set<int>aplankyti;
	while (true)
	{
		X |= V * (1ll << bitas[P]);
		bitai.insert(bitas[P]);
		aplankyti.insert(P);
		if (bitai.size() == 60)
			break;
		int v1 = -1;
		int v2 = -1;
		for (int j : adj[P])
			if (aplankyti.count(j) == false)
			{
				if (EE.count({P, j}) == 0)
					continue;
				v1 = j;
				if (bitas[j] == ((bitas[P] + 1) % 60) && bitai.count(bitas[j]) == 0)
					v2 = j;
			}
		if (v2 != -1)
			v1 = v2;
		if (v1 == -1)
		{
			stak.pop_back();
			v1 = stak.back();
		}
		else
		{
			stak.push_back(v1);
		}
		V = Move(v1);
		P = v1;
	}
	return X;
}

• Subtask 1: 8 / 8
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 47 / 55
• Subtask 5: 0 / 17