제출 #435093

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
435093	2021-06-23 01:22:45	jamezzz	분수 공원 (IOI21_parks)	C++17	45 / 100	591 ms	44300 KiB

parks

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#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
constexpr int kDirX[] = {0, 2, 0, -2};
constexpr int kDirY[] = {2, 0, -2, 0};
int construct_roads(std::vector<int> X, std::vector<int> Y) {
  int N = X.size();
  map<pair<int, int>, int> pos;
  for (int i = 0; i < N; ++i) {
    pos[make_pair(X[i], Y[i])] = i;
  }
  vector<bool> visited(N, false);
  vector<int> U, V, A, B;
  function<void (int)> dfs = [&] (int u) {
    for (int dir = 0; dir < 4; ++dir) {
      if (pos.count(make_pair(X[u] + kDirX[dir], Y[u] + kDirY[dir]))) {
        int v = pos[make_pair(X[u] + kDirX[dir], Y[u] + kDirY[dir])];
        if (!visited[v]) {
          U.push_back(u);
          V.push_back(v);
          //    |
          //  ^ |->
          //  | |
 
 
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• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20
• Subtask 6: 0 / 30