Submission #261662

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
261662	2020-08-12 00:09:05	rama_pang	Village (BOI20_village)	C++14	100 / 100	188 ms	26060 KiB

Village

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#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1e5 + 5;
namespace minimum {
int N;
vector<int> adj[MAXN];
int ans[MAXN];
int dp[MAXN];
int score = 0;
void Dfs(int u, int p) {
  for (auto v : adj[u]) if (v != p) {
    Dfs(v, u);
    if (ans[v] == 0 && ans[u] == 0) {
      ans[u] = v;
      ans[v] = u;
      score += 2;
    } else if (ans[v] == 0) {
      ans[v] = ans[u];
      ans[u] = v;
      score += 2;
    }
  }
  if (ans[u] == 0 && p == 0) {
    int ch = ans[adj[u][0]];
    ans[u] = ch;
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 38 / 38
• Subtask 3: 50 / 50