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답안 #378281

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
378281 2021-03-16T11:30:59 Z Blerargh 경주 (Race) (IOI11_race) C++17
100 / 100
 490 ms 110696 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
#define _ <<" "<<
#define cerr if(false)cerr
 
/*
Test case :
11 12
0 1 3
0 2 4
2 3 5
3 4 4
4 5 6
0 6 3
6 7 2
6 8 5
8 9 6
8 10 7
2
 
Test case :
4 3
0 1 1
1 2 2
1 3 4
2
 
*/
 
typedef pair<ll,ll> ii;
typedef tuple<ll,ll,ll,ll> tl; //actual dist, tree dist, offset, node
const ll MAXN = 2e5+5;
const ll INF = 1e18;
 
vector<ii> adjlist[MAXN];
bool visited[MAXN];
multiset<ii> s[MAXN];
ll ans=INF, stsize[MAXN], k;
 
void setmerging(ll u, ll dis, ll dep){
    visited[u] = 1;
    stsize[u] = 1;
    ll maxsize=0, maxid=-1;
    for (auto v : adjlist[u]){
        if (visited[v.first]) continue;
        setmerging(v.first, dis+v.second, dep+1);
 
        stsize[u] += stsize[v.first];
        if (stsize[v.first] > maxsize){
            maxsize = stsize[v.first];
            maxid = v.first;
        }
    }
 
    s[u].emplace(dis, dep);
    if (maxid != -1) s[u].swap(s[maxid]);
 
    for (auto v : adjlist[u]){
        ll node = v.first;
        for (auto ss : s[node]){
            ll actdist = ss.first;
            ll treedist = ss.second;
 
            auto it = s[u].lower_bound(make_pair(k-actdist+2ll*dis, 0ll));
            if (it != s[u].end() && (*it).first == k - actdist + 2ll*dis){
                ans = min(ans, treedist + (*it).second - 2ll*dep);
                cerr << "Found:" _ "{" << ss.first << "," _ ss.second << "}, {" << (*it).first << "," _ (*it).second << "}\n"; 
            }
        }
        for (auto ss : s[node]) s[u].emplace(ss);
    }
}
 
int best_path(int N, int K, int H[][2], int L[]){
    k = K;
    for (int i=0; i<N-1; i++){
        ll a = H[i][0], b = H[i][1], w = L[i];
        adjlist[a].emplace_back(b, w);
        adjlist[b].emplace_back(a, w);
    }
    setmerging(0, 0, 0);
    if (ans == INF) return -1;
    else return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 11 ms 14444 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 10 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 10 ms 14480 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14572 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 9 ms 14444 KB Output is correct
12 Correct 11 ms 14400 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 11 ms 14444 KB Output is correct
15 Correct 10 ms 14444 KB Output is correct
16 Correct 11 ms 14592 KB Output is correct
17 Correct 10 ms 14444 KB Output is correct
18 Correct 10 ms 14444 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 11 ms 14444 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 10 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 10 ms 14480 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14572 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 9 ms 14444 KB Output is correct
12 Correct 11 ms 14400 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 11 ms 14444 KB Output is correct
15 Correct 10 ms 14444 KB Output is correct
16 Correct 11 ms 14592 KB Output is correct
17 Correct 10 ms 14444 KB Output is correct
18 Correct 10 ms 14444 KB Output is correct
19 Correct 10 ms 14444 KB Output is correct
20 Correct 9 ms 14444 KB Output is correct
21 Correct 11 ms 14700 KB Output is correct
22 Correct 11 ms 14700 KB Output is correct
23 Correct 11 ms 14700 KB Output is correct
24 Correct 11 ms 14700 KB Output is correct
25 Correct 11 ms 14700 KB Output is correct
26 Correct 11 ms 14700 KB Output is correct
27 Correct 11 ms 14700 KB Output is correct
28 Correct 11 ms 14700 KB Output is correct
29 Correct 14 ms 14700 KB Output is correct
30 Correct 12 ms 14700 KB Output is correct
31 Correct 12 ms 14828 KB Output is correct
32 Correct 11 ms 14700 KB Output is correct
33 Correct 11 ms 14700 KB Output is correct
34 Correct 11 ms 14700 KB Output is correct
35 Correct 10 ms 14700 KB Output is correct
36 Correct 10 ms 14700 KB Output is correct
37 Correct 11 ms 14700 KB Output is correct
38 Correct 11 ms 14700 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 11 ms 14444 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 10 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 10 ms 14480 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14572 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 9 ms 14444 KB Output is correct
12 Correct 11 ms 14400 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 11 ms 14444 KB Output is correct
15 Correct 10 ms 14444 KB Output is correct
16 Correct 11 ms 14592 KB Output is correct
17 Correct 10 ms 14444 KB Output is correct
18 Correct 10 ms 14444 KB Output is correct
19 Correct 254 ms 60780 KB Output is correct
20 Correct 231 ms 59756 KB Output is correct
21 Correct 259 ms 60908 KB Output is correct
22 Correct 239 ms 56044 KB Output is correct
23 Correct 272 ms 73964 KB Output is correct
24 Correct 224 ms 57964 KB Output is correct
25 Correct 174 ms 42476 KB Output is correct
26 Correct 102 ms 46060 KB Output is correct
27 Correct 334 ms 69484 KB Output is correct
28 Correct 332 ms 77944 KB Output is correct
29 Correct 325 ms 77292 KB Output is correct
30 Correct 379 ms 69540 KB Output is correct
31 Correct 339 ms 69484 KB Output is correct
32 Correct 429 ms 69612 KB Output is correct
33 Correct 396 ms 89964 KB Output is correct
34 Correct 420 ms 88428 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 11 ms 14444 KB Output is correct
3 Correct 10 ms 14444 KB Output is correct
4 Correct 10 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 10 ms 14444 KB Output is correct
7 Correct 10 ms 14480 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14572 KB Output is correct
10 Correct 11 ms 14444 KB Output is correct
11 Correct 9 ms 14444 KB Output is correct
12 Correct 11 ms 14400 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 11 ms 14444 KB Output is correct
15 Correct 10 ms 14444 KB Output is correct
16 Correct 11 ms 14592 KB Output is correct
17 Correct 10 ms 14444 KB Output is correct
18 Correct 10 ms 14444 KB Output is correct
19 Correct 10 ms 14444 KB Output is correct
20 Correct 9 ms 14444 KB Output is correct
21 Correct 11 ms 14700 KB Output is correct
22 Correct 11 ms 14700 KB Output is correct
23 Correct 11 ms 14700 KB Output is correct
24 Correct 11 ms 14700 KB Output is correct
25 Correct 11 ms 14700 KB Output is correct
26 Correct 11 ms 14700 KB Output is correct
27 Correct 11 ms 14700 KB Output is correct
28 Correct 11 ms 14700 KB Output is correct
29 Correct 14 ms 14700 KB Output is correct
30 Correct 12 ms 14700 KB Output is correct
31 Correct 12 ms 14828 KB Output is correct
32 Correct 11 ms 14700 KB Output is correct
33 Correct 11 ms 14700 KB Output is correct
34 Correct 11 ms 14700 KB Output is correct
35 Correct 10 ms 14700 KB Output is correct
36 Correct 10 ms 14700 KB Output is correct
37 Correct 11 ms 14700 KB Output is correct
38 Correct 11 ms 14700 KB Output is correct
39 Correct 254 ms 60780 KB Output is correct
40 Correct 231 ms 59756 KB Output is correct
41 Correct 259 ms 60908 KB Output is correct
42 Correct 239 ms 56044 KB Output is correct
43 Correct 272 ms 73964 KB Output is correct
44 Correct 224 ms 57964 KB Output is correct
45 Correct 174 ms 42476 KB Output is correct
46 Correct 102 ms 46060 KB Output is correct
47 Correct 334 ms 69484 KB Output is correct
48 Correct 332 ms 77944 KB Output is correct
49 Correct 325 ms 77292 KB Output is correct
50 Correct 379 ms 69540 KB Output is correct
51 Correct 339 ms 69484 KB Output is correct
52 Correct 429 ms 69612 KB Output is correct
53 Correct 396 ms 89964 KB Output is correct
54 Correct 420 ms 88428 KB Output is correct
55 Correct 24 ms 18028 KB Output is correct
56 Correct 25 ms 18388 KB Output is correct
57 Correct 239 ms 77548 KB Output is correct
58 Correct 113 ms 34908 KB Output is correct
59 Correct 98 ms 46072 KB Output is correct
60 Correct 320 ms 77548 KB Output is correct
61 Correct 355 ms 69612 KB Output is correct
62 Correct 326 ms 69612 KB Output is correct
63 Correct 434 ms 69484 KB Output is correct
64 Correct 490 ms 110696 KB Output is correct
65 Correct 489 ms 101868 KB Output is correct
66 Correct 350 ms 75884 KB Output is correct
67 Correct 333 ms 56532 KB Output is correct
68 Correct 443 ms 68844 KB Output is correct
69 Correct 428 ms 69100 KB Output is correct
70 Correct 420 ms 66412 KB Output is correct