Submission #272742

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
272742	2020-08-18 15:00:57	toonewbie	Race (IOI11_race)	C++17	100 / 100	1350 ms	50412 KiB

race

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#include <bits/stdc++.h>
#include "race.h"
#define F first
#define S second
using namespace std;
const int N = 200005;
int n, k;
vector <int> g[N];
vector <pair <int, int>> gw[N]; /// just for simplicity in the code
int del[N], sub[N];
int res = N;
void calc(int v, int p = -1) {
    sub[v] = 1;
    for (int i : g[v]) {
        if (i != p && del[i] == 0) {
            calc(i, v);
            sub[v] += sub[i];
        }
    }
}
int centroid(int v, int r, int p = -1) {
    for (int i : g[v]) {
        if (i != p && del[i] == 0 && sub[i] > r) {
            return centroid(i, r, v);
        }
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57