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답안 #373952

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
373952 2021-03-06T09:27:18 Z duchung 경주 (Race) (IOI11_race) C++17
100 / 100
 522 ms 89708 KB 
#define ii pair<int , int>
 
#include <race.h>
#include <bits/stdc++.h>
using namespace std;
 
const int N = 2e5 + 5;
 
int _k , ans = 1e9;
int dist[N] , depth[N];
vector<ii> adj[N];
set<ii> S[N];
 
void dfs(int u , int p = -1)
{
    S[u].insert(make_pair(dist[u] , depth[u]));
    for (auto e : adj[u])
    {
        int v = e.first;
        int w = e.second;
 
        if (v == p) continue;
 
        dist[v] = dist[u] + w;
        depth[v] = depth[u] + 1;
        dfs(v , u);
 
        if (S[u].size() < S[v].size()) swap(S[u] , S[v]);
        for (auto x : S[v])
        {
            auto it = S[u].lower_bound(make_pair(_k - x.first + 2 * dist[u] , 0));
            if (it != S[u].end() && it->first + x.first - 2 * dist[u] == _k) ans = min(ans , it->second + x.second - 2 * depth[u]);
        }
 
        for (auto x : S[v])
        {
            S[u].insert(x);
        }
    }
}
 
int best_path(int n, int k, int H[][2], int L[]) {
	_k = k;
	for (int i = 0; i < n - 1; i++) {
        ++H[i][0] , ++H[i][1];
		adj[H[i][0]].push_back(make_pair(H[i][1], L[i]));
		adj[H[i][1]].push_back(make_pair(H[i][0], L[i]));
	}
	dfs(1);
	return (ans == 1e9 ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14444 KB Output is correct
2 Correct 10 ms 14444 KB Output is correct
3 Correct 11 ms 14444 KB Output is correct
4 Correct 11 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 14488 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14444 KB Output is correct
10 Correct 10 ms 14444 KB Output is correct
11 Correct 10 ms 14444 KB Output is correct
12 Correct 10 ms 14588 KB Output is correct
13 Correct 10 ms 14444 KB Output is correct
14 Correct 10 ms 14444 KB Output is correct
15 Correct 11 ms 14476 KB Output is correct
16 Correct 10 ms 14444 KB Output is correct
17 Correct 11 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 10 ms 14444 KB Output is correct
3 Correct 11 ms 14444 KB Output is correct
4 Correct 11 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 14488 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14444 KB Output is correct
10 Correct 10 ms 14444 KB Output is correct
11 Correct 10 ms 14444 KB Output is correct
12 Correct 10 ms 14588 KB Output is correct
13 Correct 10 ms 14444 KB Output is correct
14 Correct 10 ms 14444 KB Output is correct
15 Correct 11 ms 14476 KB Output is correct
16 Correct 10 ms 14444 KB Output is correct
17 Correct 11 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 10 ms 14444 KB Output is correct
21 Correct 13 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 13 ms 14700 KB Output is correct
27 Correct 11 ms 14572 KB Output is correct
28 Correct 11 ms 14700 KB Output is correct
29 Correct 11 ms 14700 KB Output is correct
30 Correct 11 ms 14700 KB Output is correct
31 Correct 11 ms 14700 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 11 ms 14700 KB Output is correct
36 Correct 11 ms 14700 KB Output is correct
37 Correct 12 ms 14572 KB Output is correct
38 Correct 13 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 10 ms 14444 KB Output is correct
3 Correct 11 ms 14444 KB Output is correct
4 Correct 11 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 14488 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14444 KB Output is correct
10 Correct 10 ms 14444 KB Output is correct
11 Correct 10 ms 14444 KB Output is correct
12 Correct 10 ms 14588 KB Output is correct
13 Correct 10 ms 14444 KB Output is correct
14 Correct 10 ms 14444 KB Output is correct
15 Correct 11 ms 14476 KB Output is correct
16 Correct 10 ms 14444 KB Output is correct
17 Correct 11 ms 14444 KB Output is correct
18 Correct 10 ms 14444 KB Output is correct
19 Correct 185 ms 36844 KB Output is correct
20 Correct 206 ms 36840 KB Output is correct
21 Correct 187 ms 36332 KB Output is correct
22 Correct 181 ms 35308 KB Output is correct
23 Correct 202 ms 46188 KB Output is correct
24 Correct 179 ms 36076 KB Output is correct
25 Correct 173 ms 40736 KB Output is correct
26 Correct 119 ms 45932 KB Output is correct
27 Correct 252 ms 45420 KB Output is correct
28 Correct 326 ms 77676 KB Output is correct
29 Correct 350 ms 76140 KB Output is correct
30 Correct 251 ms 45548 KB Output is correct
31 Correct 279 ms 45548 KB Output is correct
32 Correct 364 ms 45784 KB Output is correct
33 Correct 297 ms 46880 KB Output is correct
34 Correct 389 ms 71532 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 10 ms 14444 KB Output is correct
3 Correct 11 ms 14444 KB Output is correct
4 Correct 11 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 14488 KB Output is correct
8 Correct 10 ms 14444 KB Output is correct
9 Correct 10 ms 14444 KB Output is correct
10 Correct 10 ms 14444 KB Output is correct
11 Correct 10 ms 14444 KB Output is correct
12 Correct 10 ms 14588 KB Output is correct
13 Correct 10 ms 14444 KB Output is correct
14 Correct 10 ms 14444 KB Output is correct
15 Correct 11 ms 14476 KB Output is correct
16 Correct 10 ms 14444 KB Output is correct
17 Correct 11 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 10 ms 14444 KB Output is correct
21 Correct 13 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 13 ms 14700 KB Output is correct
27 Correct 11 ms 14572 KB Output is correct
28 Correct 11 ms 14700 KB Output is correct
29 Correct 11 ms 14700 KB Output is correct
30 Correct 11 ms 14700 KB Output is correct
31 Correct 11 ms 14700 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 11 ms 14700 KB Output is correct
36 Correct 11 ms 14700 KB Output is correct
37 Correct 12 ms 14572 KB Output is correct
38 Correct 13 ms 14700 KB Output is correct
39 Correct 185 ms 36844 KB Output is correct
40 Correct 206 ms 36840 KB Output is correct
41 Correct 187 ms 36332 KB Output is correct
42 Correct 181 ms 35308 KB Output is correct
43 Correct 202 ms 46188 KB Output is correct
44 Correct 179 ms 36076 KB Output is correct
45 Correct 173 ms 40736 KB Output is correct
46 Correct 119 ms 45932 KB Output is correct
47 Correct 252 ms 45420 KB Output is correct
48 Correct 326 ms 77676 KB Output is correct
49 Correct 350 ms 76140 KB Output is correct
50 Correct 251 ms 45548 KB Output is correct
51 Correct 279 ms 45548 KB Output is correct
52 Correct 364 ms 45784 KB Output is correct
53 Correct 297 ms 46880 KB Output is correct
54 Correct 389 ms 71532 KB Output is correct
55 Correct 25 ms 17132 KB Output is correct
56 Correct 26 ms 16236 KB Output is correct
57 Correct 121 ms 33024 KB Output is correct
58 Correct 63 ms 26136 KB Output is correct
59 Correct 121 ms 45920 KB Output is correct
60 Correct 362 ms 76664 KB Output is correct
61 Correct 293 ms 50028 KB Output is correct
62 Correct 254 ms 45548 KB Output is correct
63 Correct 418 ms 45580 KB Output is correct
64 Correct 522 ms 89708 KB Output is correct
65 Correct 518 ms 83564 KB Output is correct
66 Correct 355 ms 72812 KB Output is correct
67 Correct 252 ms 39228 KB Output is correct
68 Correct 465 ms 57324 KB Output is correct
69 Correct 503 ms 61716 KB Output is correct
70 Correct 462 ms 55800 KB Output is correct