Submission #281768

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
2817682020-08-23 12:55:55PKhingRace (IOI11_race)C++14
0 / 100
143 ms262148 KiB
#include "race.h"
#include<bits/stdc++.h>
#define FOR(i,a) for(int i=0;i<a;i++)
#define FOR1(i,a) for(int i=1;i<=a;i++)
#define db(a) printf("<%d> ",a)
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define mp make_pair
#define pb emplace_back
#define p emplace
#define ii pair<int,int>
#define ll long long
#define rf() freopen("_working/input.in","r",stdin)
#define pf() freopen("_working/output.out","w+",stdout)
using namespace std;
const int INF=1e9;
int par[200005];
int size[200005];
vector<int> child[200005];
queue<int> sz[200005];
queue<ii> len[200005];
set<ii> edge[200005];
int centroid(int u,int p,int n){
for(auto v:edge[u]){
if(v.f!=p && size[v.f]>n/2)return centroid(v.f,u,n);
}
return u;
}
void dfs(int u,int p){
 
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