제출 #373496

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
373496	2021-03-04 20:29:12	eulerdesoja	Traffic (IOI10_traffic)	C++14	100 / 100	1352 ms	163564 KiB

traffic

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#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define ll long long
#define pb push_back
#define sz(x) int(x.size())
typedef pair<int,int>ii;
typedef vector<int> vi;
const int mxn=1e6+6;
//maximum of congestion in a road
vi g[mxn];  
int ma[mxn],sum[mxn];
void dfs(int i,int p,int a[]){
  for(int j:g[i])if(j!=p){
    dfs(j,i,a);
    sum[i]+=sum[j];
  }
  sum[i]+=a[i];
}
void dfs1(int i,int p){
  for(int j:g[i])if(j!=p){
    ma[i]=max(ma[i],sum[j]);
    dfs1(j,i);
  }
  ma[i]=max(ma[i],sum[0]-sum[i]);
}
 
 
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• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 25 / 25