Submission #563913

#	Time	Username	Problem	Language	Result	Execution time	Memory
563913		blue	City (JOI17_city)	C++17	8 / 100	287 ms	37164 KiB

Encoder

#include "Encoder.h"
#include <vector>
#include <algorithm>
#include <iostream>
using namespace std;

	namespace{
using vi = vector<int>;
using vvi = vector<vi>;
#define sz(x) int(x.size())


const int mx = 250'000;
using ll = long long;
using vll = vector<ll>;

int N;
vi edge[mx];
vi children[mx];

vll code(mx, 0);


void dfs(int u, int p)
{
	int vct = 0;
	for(int v : edge[u])
	{
		if(v == p) continue;
		children[u].push_back(v);
		vct++;
	}

	int vp = 1;
	while((1<<vp) < vct)
		vp++;

	int ci = -1;

	for(int v : children[u])
	{
		ci++;
		code[v] = (code[u] << vp) + ci;
		dfs(v, u);
	}
}







	}


void Encode(int N_, int A[], int B[])
{
	N = N_;

	for(int e = 0; e < N-1; e++)
	{
		edge[A[e]].push_back(B[e]);
		edge[B[e]].push_back(A[e]);
	}

	code[0] = 1;
	dfs(0, -1);

	for(int i = 0; i < N; i++)
	{
		vi codelist;
		ll z = code[i];
		while(z > 0)
		{
			codelist.push_back(z%2);
			z >>= 1;
		}
		// cerr << code[i] << ' ';
		// cerr << '\n';
		// for(int f = sz(codelist)-1; f >= 0; f--)
		// 	cerr << codelist[f];
		// cerr << ' ';
	}
	// cerr << '\n';

	for(int i = 0; i < N; i++)
		Code(i, code[i]);
}

Device

#include "Device.h"
#include <vector>
#include <algorithm>
using namespace std;

namespace
{
	using vi = vector<int>;
	using vvi = vector<vi>;
	#define sz(x) int(x.size())
}

void InitDevice()
{
	;
}

int Answer(long long S, long long T)
{
	vi sv, tv;

	while(S != 0)
	{
		sv.push_back(S & 1);
		S >>= 1;
	}

	while(T != 0)
	{
		tv.push_back(T & 1);
		T >>= 1;
	}

	reverse(sv.begin(), sv.end());
	reverse(tv.begin(), tv.end());

	for(int i = 0; i < min(sz(sv), sz(tv)); i++)
	{
		if(sv[i] != tv[i]) return 2;
	}

	if(sz(sv) > sz(tv))
		return 0;
	else
		return 1;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 92