제출 #64956

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
64956	2018-08-06 09:19:24	PeppaPig	경주 (Race) (IOI11_race)	C++14	100 / 100	1585 ms	119076 KiB

race

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#include "race.h"
#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define x first
#define y second
const int N = 2e5+5;
int n, k;
int dep[N], pos[N], in[N], out[N], sz[N];
long d[N];
vector<pii> g[N];
void get_sz(int u, int p) {
    static int idx = 0;
    in[u] = ++idx, pos[idx] = u, sz[u] = 1;
    if(u) for(auto it = g[u].begin();;++it) if(it->x == p) {
        g[u].erase(it); break;
    }
    for(pii &v : g[u]) {
        d[v.x] = d[u] + v.y;
        dep[v.x] = dep[u] + 1;
        get_sz(v.x, u), sz[u] += sz[v.x];
        if(sz[g[u][0].x] < sz[v.x]) swap(v, g[u][0]);
    }
    out[u] = idx;
}
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57