Submission #936179

#	Time	Username	Problem	Language	Result	Execution time	Memory
936179		nguyentunglam	City (JOI17_city)	C++17	8 / 100	128 ms	23644 KiB

Encoder

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

namespace {
const int NN = 1e5 + 10;

vector<int> adj[NN];

bool vis[NN];

int cnt = -1;
}


void dfs(int u, int p) {
  vis[u] = 1;
  int st = ++cnt;
  for(int &v : adj[u]) if (v != p) dfs(v, u);
  int diff = 1, deg = 0;
  while (diff < cnt - st) diff *= 2, deg++;
  cnt = st + diff;
  long long code = st * 19 + deg;
//  cout << st << " " << cnt << " " << deg << " " << u << endl;
  assert(code < (1 << 27));
  Code(u, code);
}

void Encode(int N, int A[], int B[])
{
  for(int i = 0; i < N - 1; i++) {
    adj[A[i]].push_back(B[i]);
    adj[B[i]].push_back(A[i]);
  }
  for(int i = 0; i < N; i++) if (!vis[i]) dfs(i, i);
}

Device

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

void InitDevice()
{

}

int Answer(long long S, long long T)
{
  long long st_x = S / 19;
  long long ed_x = st_x + (1 << (S % 19));

  long long st_y = T / 19;
  long long ed_y = st_y + (1 << (T % 19));

//  cout << st_x << " " << ed_x << endl;
//  cout << st_y << " " << ed_y << endl;

  if (st_x <= st_y && st_y <= ed_x) return 1;
  if (st_y <= st_x && st_x <= ed_y) return 0;
	return 2;
}

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