Submission #852459

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
852459	2023-09-21 20:16:31	epicci23	Factories (JOI14_factories)	C++17	100 / 100	3790 ms	184496 KiB

factories

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#include "bits/stdc++.h"
#include "factories.h"
using namespace std;
#define pb push_back
#define endl "\n" 
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()
const int N = 5e5 + 5;
const int LOG = 30;
const long long INF = 1e18;
vector<array<long long,2>> v[N];  
int tin[N],tout[N];
long long depth[N];
int t=0;
int lift[N][LOG];
void dfs(int c,int p,long long d){
    depth[c]=d;
    tin[c]=t++;
    tout[c]=tin[c];
    lift[c][0]=p;
    for(int i=1;i<LOG;i++) lift[c][i]=lift[lift[c][i-1]][i-1];
    for(auto x:v[c]){
      if(x[0]==p) continue;
      dfs(x[0],c,d+x[1]);
      tout[c]=max(tout[c],tout[x[0]]);
    }
}
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 18 / 18
• Subtask 3: 67 / 67