Submission #821803

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
821803	2023-08-11 17:19:42	tch1cherin	Love Polygon (BOI18_polygon)	C++17	100 / 100	290 ms	34796 KiB

polygon

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#include <bits/stdc++.h>
using namespace std;
 
const int MAX_N = 1e5 + 5;
vector<int> G[MAX_N], comp;
bool vis[MAX_N] = {};
int dp[MAX_N][2] = {};
 
void DFS(int u, pair<int, int> edge = {-1, -1}) {
  vis[u] = true;
  dp[u][0] = dp[u][1] = 0;
  vector<int> children;
  for (int v : G[u]) {
    if (u == edge.first && v == edge.second) {
      continue;
    }
    if (v == edge.first && u == edge.second) {
      continue;
    }
    if (!vis[v]) {
      children.push_back(v);
      DFS(v, edge);
      dp[u][0] += max(dp[v][0], dp[v][1]);
    }
  }
  dp[u][1] = dp[u][0];
  for (int v : children) {
    if (u == edge.first && v == edge.second) {
      continue;
    }
 
 
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• Subtask 1: 21 / 21
• Subtask 2: 25 / 25
• Subtask 3: 29 / 29
• Subtask 4: 25 / 25