Submission #841775

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
841775	2023-09-02 05:02:07	vjudge1	Roadside Advertisements (NOI17_roadsideadverts)	C++17	7 / 100	1037 ms	17028 KiB

roadsideadverts

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/*#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2,fma")*/
#include <bits/stdc++.h>
using namespace std;
#define ll int
map<pair<ll,ll>,ll>mp;
map<ll,ll>pm;
ll m[50010];
ll n,cnt,a1,a2,a3,a4,a5;
ll used[50010];
vector<ll>g[50010];
ll tek=0;
void dfs(ll v,ll p)
{
  if(m[v]==1)
  {
    pm[v]=1;
  }
  used[v]=tek;
  for(int it:g[v])
  {
    if(used[it]!=tek)
    {
      dfs(it,v);
    }
  }
  if(pm[v])
  {
    cnt+=mp[{p,v}];
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 0 / 23
• Subtask 3: 0 / 40
• Subtask 4: 0 / 30