Submission #373545

#	Time	Username	Problem	Language	Result	Execution time	Memory
373545		lakshith_	Traffic (IOI10_traffic)	C++14	50 / 100	1571 ms	262148 KiB

traffic

#include <bits/stdc++.h>
    #include "traffic.h"
    #define pb push_back
	#define ll int
     
    using namespace std;
	
    vector<vector<int>> adj(1000000,vector<int>());
 
    map<pair<int,int>,ll> m;

	int* P;
 
    ll dp(int p,int c){
        if(m.find((pair<int,int>){p,c})!=m.end())return m[(pair<int,int>){p,c}];
        ll ans = P[c];
        for(int v:adj[c]){
            if(v==p)continue;
            ans += dp(c,v);
        }
        m.insert({{p,c},ans});
        return ans;
	}
     
    int LocateCentre(int n,int p[],int s[],int d[]){
      for(int i=0;i<n-1;i++){
        adj.at(s[i]).pb(d[i]);
        adj.at(d[i]).pb(s[i]);
      }
      P = p;
      ll ans = INT_MAX;
      int index = -1;
      for(int i=0;i<n;i++){
          ll local = INT_MIN;
          for(int v:adj[i])local = max(local,dp(i,v));
          if(local<ans){
              ans = local;
              index = i;
          }
      }
      return index;
    }

• Subtask 1: 25 / 25
• Subtask 2: 0 / 25
• Subtask 3: 25 / 25
• Subtask 4: 0 / 25