Submission #1100281

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1100281	2024-10-13 11:59:22	kokoue	Race (IOI11_race)	C++14	100 / 100	631 ms	36960 KiB

race

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#include<bits/stdc++.h>
#include "race.h"
#define maxn 200010
#define maxk 1000010
#define f first
#define s second
#define ll long long
using namespace std;
int n,k;
int subsz[maxn],cnt[maxk];
bool is_cen[maxn];
int mx_sz=0;
int ans=INT_MAX;
vector<pair<int,int>> edges[maxn];
int get_size(int start,int parent=-1)
{
    int sz=1;
    for(auto e:edges[start])
    {
        if(e.f==parent || is_cen[e.f]) continue;
        sz+=get_size(e.f,start);
    }
    return subsz[start]=sz;
}
int find_centroid(int start,int tree_sz,int parent=-1)
{
    for(auto e:edges[start])
    {
        if(e.f==parent || is_cen[e.f]) continue;
        if(2*subsz[e.f]>tree_sz) return find_centroid(e.f,tree_sz,start);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57