제출 #726528

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
726528	2023-04-19 03:46:23	hoainiem	경주 (Race) (IOI11_race)	C++14	100 / 100	542 ms	32280 KiB

race

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#include "race.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define nmax 200008
#define kmax 1000008
const int inf = 1e9;
using namespace std;
typedef pair<int, int> pii;
int n, k, lim, ans = inf, sz[nmax], f[kmax];
bool kt[nmax];
vector<pii>l[nmax];
int dfs(int x, int pre){
    sz[x] = 1;
    for (pii it : l[x]){
        if (it.fi == pre || kt[it.fi])
            continue;
        sz[x] += dfs(it.fi, x);
    }
    return sz[x];
}
int centroid(int rt, int x, int pre){
    for (pii it : l[x]){
        if (it.fi == pre || kt[it.fi])
            continue;
        if (sz[it.fi] * 2 > sz[rt])
            return centroid(rt, it.fi, x);
    }
    return x;
}
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57