Submission #100403

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
100403	2019-03-10 22:53:24	SuperJumbo	Race (IOI11_race)	C++14	9 / 100	3042 ms	21260 KiB

race

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 #include <bits/stdc++.h>
#define NMAX 500001
#define inf (INT_MAX>>2)
#define ll long long
#define add push_back
#define mp make_pair
#include "race.h"
using namespace std;
#define min(a,b) (a > b ? b : a) 
vector<pair<int,int>> g[NMAX];
int tot, k, ans; 
int sz[NMAX], cen[NMAX];
int all[NMAX];
void dfs(int node,int par){
    sz[node] = 1;
    for(auto e:g[node]){
      int x = e.first;
        if(x == par || cen[x] )continue;
        dfs(x,node);
        sz[node] += sz[x];
    }
    tot = max(tot,sz[node]);
}
int centroid(int node,int par){
    for(auto e:g[node]){
      int x = e.first;
        if(x!=par && sz[x]> tot/2 && !cen[x]){
            return centroid(x,node);
        }
    }
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 22
• Subtask 4: 0 / 57