Submission #796364

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
796364	2023-07-28 10:23:06	Dan4Life	Worst Reporter 4 (JOI21_worst_reporter4)	C++17	0 / 100	2080 ms	154420 KiB

worst_reporter2

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#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define int long long
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
const int mxN = (int)2e5+10;
const int LINF = (int)2e18;
int n;
unordered_map<int,int> dp[mxN];
int a[mxN], h[mxN], c[mxN];
vector<int> adj[mxN];
set<int> S[mxN];
int recur(int s, int v){
  if(dp[s].count(v)) return dp[s][v];
  int ans = (v!=h[s])*c[s];
  S[s].insert(h[s]);
  for(auto u : adj[s]){ 
    ans+=recur(u,v);
    if(sz(S[s])<sz(S[u])) S[s].swap(S[u]);
    for(auto x : S[u]) S[s].insert(x);
  }
  auto itr = end(S[s]);
  while(itr!=begin(S[s])){
    itr--; if(*itr<=v) break;
    ans=min(ans, recur(s,*itr));
  }
  return dp[s][v]=ans;
}
 
 
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• Subtask 1: 0 / 14
• Subtask 2: 0 / 65
• Subtask 3: 0 / 21