Submission #648255

#	Time	Username	Problem	Language	Result	Execution time	Memory
648255		blue	Two Transportations (JOI19_transportations)	C++17	0 / 100	1643 ms	59756 KiB

Azer

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


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

	const int mx = 2'000;
	const int inf = 1'000'000'000;

	const int dl = 9;
	const int ul = 11;

	int N;
	vpii edge[mx];
	vi currdist;

	set<pii> options;

	pii get_option()
	{
		while(1)
		{
			if(options.empty())
				return {inf, 0};

			int d = options.begin()->first;
			int u = options.begin()->second;

			// cerr << "azer ";
			// cerr << d << ' ' << u << " : " << currdist[u] << '\n';

			// cerr << d << " -> " << u << '\n';
			// cerr << currdist[u] << '\n';

			if(d >= currdist[u])
			{
				// cerr << "terminated\n";
				options.erase(options.begin());
			}
			else
			{
				// cerr << "returned\n";
				return {d, u};
			}
		}
	}

	int lastdist = 0;

	int it = 0;
	int phase = 0;
	int bt = 0;

	int mydist = 0;
	int myloc = 0;

	int recdist = 0;
	int recloc = 0;

	int actdist = 0;
	int actloc = 0;
}

void InitA(int N_, int A, vi U, vi V, vi C)
{
	N = N_;
	while(N <= 10);

	for(int j = 0; j < A; j++)
	{
		edge[U[j]].push_back({V[j], C[j]});
		edge[V[j]].push_back({U[j], C[j]});
	}

	currdist = vi(N, inf);
	currdist[0] = 0;

	for(pii e : edge[0])
		options.insert({e.second + 0, e.first});

	pii du = get_option();
	mydist = du.first;
	myloc = du.second;

	mydist = min(mydist, lastdist + 501);

	for(int b = 0; b < dl; b++)
		SendA((mydist - lastdist) & (1<<b));

	// cerr << "Azer first sends " << mydist << '\n'; 
}

void ReceiveA(bool x)
{
	if(phase == 0)
	{
		if(x)
			recdist += (1<<bt);
		bt++;
		if(bt == dl)
		{
			// cerr << it << "        Azer = " << mydist << "         Baijan = " << recdist << '\n';
			if(mydist < recdist) //MAKE SURE IT IS <= IN THE OTHER PROGRAM
			{
				for(int b = 0; b < ul; b++)
					SendA(myloc & (1<<b));
				actdist = mydist;
				actloc = myloc;
				//go down
			}
			else
			{
				phase = 1;
				bt = 0;
				// cerr << "Azer goes to phase " << 1 << '\n';
				return;
			}
		}
		else
			return;
	}
	else if(phase == 1)
	{
		// cerr << "Azer in phase 1 " << '\n';
		// cerr << "it = " << it << '\n';
		if(x)
			recloc += (1<<bt);
		bt++;
		if(bt < ul)
			return;
		else
		{
			// cerr << "Azer received best option from Baijan : " << recloc << " at " << recdist << '\n';
			actdist = recdist;
			actloc = recloc;
			//go down
		}
	}

	currdist[actloc] = actdist;
	for(pii vp : edge[actloc])
		options.insert({vp.second + actdist, vp.first});

	// cerr << "Azer activated outgoing edges from " << actloc << '\n';

	lastdist = max(lastdist, actdist);

	// cerr << "Azer : \n";
	// cerr << "phase " << it << " terminated\n";
	// for(int i = 0; i < N; i++)
	// 	cerr << currdist[i] << ' ';
	// cerr << '\n';

	it++;
	if(it == N-1)
		return;

	phase = 0;
	bt = 0;

	pii du = get_option();
	mydist = du.first;
	myloc = du.second;

mydist = min(mydist, lastdist + 501);
	for(int b = 0; b < dl; b++)
		SendA((mydist - lastdist) & (1<<b));

	recdist = lastdist;
	recloc = 0;
	// cerr << "\n\n\n\n";
}

vi Answer()
{
	return currdist;
}

Baijan

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


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

	const int mx = 2'000;
	const int inf = 1'000'000'000;

	const int dl = 9;
	const int ul = 11;

	int N;
	vpii edge[mx];
	vi currdist;

	set<pii> options;

	pii get_option()
	{
		while(1)
		{
			if(options.empty())
			{
				// cerr << "Baijan returned empty\n";
				return {inf, 0};
			}

			int d = options.begin()->first;
			int u = options.begin()->second;

			// cerr << "baijan \n";
			// cerr << d << ' ' << u << " : " << currdist[u] << '\n';


			if(d >= currdist[u])
			{
				// cerr << "terminated\n";
				options.erase(options.begin());
			}
			else
			{
				// cerr << "returned\n";
				return {d, u};
			}
		}
	}

	int lastdist = 0;

	int it = 0;
	int phase = 0;
	int bt = 0;

	int mydist = 0;
	int myloc = 0;

	int recdist = 0;
	int recloc = 0;

	int actdist = 0;
	int actloc = 0;
}

void InitB(int N_, int A, vi U, vi V, vi C)
{
	N = N_;

	for(int j = 0; j < A; j++)
	{
		edge[U[j]].push_back({V[j], C[j]});
		edge[V[j]].push_back({U[j], C[j]});
	}

	currdist = vi(N, inf);
	currdist[0] = 0;

	for(pii e : edge[0])
		options.insert({e.second + 0, e.first});

	pii du = get_option();
	mydist = du.first;
	myloc = du.second;

	mydist = min(mydist, lastdist + 501);

	for(int b = 0; b < dl; b++)
		SendB((mydist - lastdist) & (1<<b));

	// cerr << "Baijan first sends " << mydist << '\n'; 
}

void ReceiveB(bool x)
{
	if(phase == 0)
	{
		if(x)
			recdist += (1<<bt);
		bt++;
		if(bt == dl)
		{
			// cerr << "Baijan received option " << 
			if(mydist <= recdist)
			{
				// cerr << "Baijan sending location\n";
				for(int b = 0; b < ul; b++)
					SendB(myloc & (1<<b));
				actdist = mydist;
				actloc = myloc;
				//go down
				// cerr << "Baijan sent location " << myloc << " at " << mydist << '\n';
			}
			else
			{
				phase = 1;
				bt = 0;
				// cerr << "Baijan goes to phase 1\n";
				return;
			}
		}
		else
			return;
	}
	else if(phase == 1)
	{
		if(x)
			recloc += (1<<bt);
		bt++;
		if(bt < ul)
			return;
		else
		{
			actdist = recdist;
			actloc = recloc;
			//go down
		}
	}

	currdist[actloc] = actdist;
	for(pii vp : edge[actloc])
	{

		options.insert({vp.second + actdist, vp.first});
		// cerr << vp.first << " at " << vp.second + actdist << " : " << "Baijan" << '\n';
	}

	// cerr << "Baijan activated outgoing edges from " << actloc << '\n';

	lastdist = max(lastdist, actdist);

	// cerr << "Baijan : \n";
	// cerr << "phase " << it << " terminated\n";
	// for(int i = 0; i < N; i++)
	// 	cerr << currdist[i] << ' ';
	// cerr << '\n';

	it++;
	if(it == N-1)
		return;

	phase = 0;
	bt = 0;

	pii du = get_option();
	mydist = du.first;
	myloc = du.second;

	// cerr << "now my dist = " << mydist << '\n';
	// cerr << "lastdist = " << lastdist << '\n';

	mydist = min(mydist, lastdist + 501);

	for(int b = 0; b < dl; b++)
		SendB((mydist - lastdist) & (1<<b));
	// cerr << "Baijan sending distance " << mydist << " for " << myloc << '\n';

	recdist = lastdist;
	recloc = 0;
	// cerr << "\n\n\n\n";
}

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