Submission #707638

#	Time	Username	Problem	Language	Result	Execution time	Memory
707638		600Mihnea	Game (APIO22_game)	C++17	0 / 100	1 ms	336 KiB

game

#include "game.h"
#include <cmath>
#include <functional>
#include <fstream>
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <map>
#include <list>
#include <time.h>
#include <math.h>
#include <random>
#include <deque>
#include <queue>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <cassert>
#include <bitset>
#include <sstream>
#include <chrono>
#include <cstring>
#include <numeric>

using namespace std;

const int INF = (int)1e9 + 7;
int rad;

int n, k;
vector<vector<int>> g, ig;
vector<int> mn;
vector<int> mn2;
bool is;

void addedge(int from, int to)
{
	g[from].push_back(to);
	ig[to].push_back(from);
}

void init(int nn, int kk)
{
	is = 0;
	n = nn;
	k = kk;
	ig.clear();
	ig.resize(n);

	rad = sqrt(n) + 2;

	mn.clear();
	mn.resize(n, +INF);

	mn2.clear();
	mn2.resize(n, +INF);
}

void upd2(int a, int value)
{
	if (is)
	{
		return;
	}
	if (value < mn2[a])
	{
		mn2[a] = value;
		if (a < k && mn2[a] <= a)
		{
			is = 1;
			return;
		}
		for (auto& b : ig[a])
		{
			upd2(b, mn2[a]);
		}
	}
}


void upd(int a, int value)
{
	if (is)
	{
		return;
	}
	if (value < mn[a])
	{
		mn[a] = value;
		if (a < k && mn[a] <= a)
		{
			is = 1;
			return;
		}
		for (auto& b : ig[a])
		{
			upd(b, mn[a]);
		}
	}
}

int add_teleporter(int from, int to)
{
	addedge(from, to);	
	if (to < k)
	{
		upd(from, to);
		upd2(from, to / rad);
	}
	else
	{
		upd(from, mn[to]);
		upd2(from, mn2[to]);
	}
	if (is)
	{
		return 1;
	}
	return 0;
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 10
• Subtask 3: 0 / 18
• Subtask 4: 0 / 30
• Subtask 5: 0 / 40