제출 #900118

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
900118	2024-01-07 16:46:54	Macker	경주 (Race) (IOI11_race)	C++17	100 / 100	1100 ms	55056 KiB

race

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#include "race.h"
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
typedef long double ld;
#define all(v) v.begin(), v.end()
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")
vector<vector<pair<int, int>>> adj;
vector<int> centroid;
vector<int> sz;
int k;
int szDfs(int a, int p){
    sz[a] = 1;
    for (auto &[b, _] : adj[a]) {
        if(b == p || centroid[b]) continue;
        sz[a] += szDfs(b, a);
    }
    return sz[a];
}
int getCentroid(int a, int p, int curSz){
    for (auto &[b, _] : adj[a]) {
        if(b == p || centroid[b]) continue;
        if(sz[b] * 2 > curSz) return getCentroid(b, a, curSz);
    }
 
 
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