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답안 #263093

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
263093 2020-08-13T13:00:28 Z Nightlight 경주 (Race) (IOI11_race) C++14
100 / 100
 583 ms 103124 KB 
#include "race.h"
#include <bits/stdc++.h>
#define pii pair<long long, int>
using namespace std;

int N;
long long K;
map<long long, int> mp[200005];
vector<pii> adj[200005];
long long dist[200005];
int cnt[200005];
int ans = 1000000000;

void DFS(int u, int p = N) {
  int v;
  long long w;
  mp[u][dist[u]] = cnt[u];
  for(pii now : adj[u]) {
    v = now.second, w = now.first;
    if(v == p) continue;
    dist[v] = dist[u] + w;
    cnt[v] = cnt[u] + 1;
    DFS(v, u);
    if(mp[v].size() > mp[u].size()) swap(mp[v], mp[u]);
  }
  long long jarak;
//  cout << u << " -> " << dist[u] << " " << cnt[u] << "\n";
  for(pii now : adj[u]) {
    v = now.second;
    if(v == p) continue;
//    cout << v << ":\n";
    for(pii it : mp[v]) {
      jarak = dist[u] * 2 + K - it.first;
      if(mp[u].count(jarak)) {
        ans = min(ans, mp[u][jarak] + it.second - cnt[u] * 2);
      }
    }
    for(pii it : mp[v]) {
      if(mp[u].count(it.first)) mp[u][it.first] = min(mp[u][it.first], it.second);
      else mp[u][it.first] = it.second;
    }
  }
}

int best_path(int n, int k, int H[][2], int L[]) {
  N = n, K = k;
  for(int i = 0; i < N - 1; i++) {
    adj[H[i][0]].emplace_back(L[i], H[i][1]);
    adj[H[i][1]].emplace_back(L[i], H[i][0]);
  }
  DFS(0);
  if(ans == 1000000000) return -1;
  return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 10 ms 14592 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 11 ms 14464 KB Output is correct
7 Correct 10 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 10 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 11 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 11 ms 14464 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 10 ms 14592 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 11 ms 14464 KB Output is correct
7 Correct 10 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 10 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 11 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 11 ms 14464 KB Output is correct
19 Correct 10 ms 14464 KB Output is correct
20 Correct 11 ms 14464 KB Output is correct
21 Correct 12 ms 14848 KB Output is correct
22 Correct 11 ms 14720 KB Output is correct
23 Correct 11 ms 14720 KB Output is correct
24 Correct 11 ms 14720 KB Output is correct
25 Correct 11 ms 14848 KB Output is correct
26 Correct 13 ms 14720 KB Output is correct
27 Correct 11 ms 14592 KB Output is correct
28 Correct 11 ms 14720 KB Output is correct
29 Correct 11 ms 14720 KB Output is correct
30 Correct 11 ms 14720 KB Output is correct
31 Correct 11 ms 14720 KB Output is correct
32 Correct 11 ms 14720 KB Output is correct
33 Correct 12 ms 14720 KB Output is correct
34 Correct 11 ms 14720 KB Output is correct
35 Correct 11 ms 14720 KB Output is correct
36 Correct 11 ms 14720 KB Output is correct
37 Correct 11 ms 14720 KB Output is correct
38 Correct 11 ms 14720 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 10 ms 14592 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 11 ms 14464 KB Output is correct
7 Correct 10 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 10 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 11 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 11 ms 14464 KB Output is correct
19 Correct 168 ms 37424 KB Output is correct
20 Correct 159 ms 37244 KB Output is correct
21 Correct 161 ms 36984 KB Output is correct
22 Correct 172 ms 36984 KB Output is correct
23 Correct 218 ms 50040 KB Output is correct
24 Correct 178 ms 39928 KB Output is correct
25 Correct 162 ms 37112 KB Output is correct
26 Correct 84 ms 43384 KB Output is correct
27 Correct 291 ms 48888 KB Output is correct
28 Correct 408 ms 84732 KB Output is correct
29 Correct 441 ms 83388 KB Output is correct
30 Correct 271 ms 48888 KB Output is correct
31 Correct 268 ms 48888 KB Output is correct
32 Correct 345 ms 49016 KB Output is correct
33 Correct 367 ms 53772 KB Output is correct
34 Correct 457 ms 85752 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 11 ms 14464 KB Output is correct
4 Correct 10 ms 14592 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 11 ms 14464 KB Output is correct
7 Correct 10 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 10 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 11 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 11 ms 14464 KB Output is correct
19 Correct 10 ms 14464 KB Output is correct
20 Correct 11 ms 14464 KB Output is correct
21 Correct 12 ms 14848 KB Output is correct
22 Correct 11 ms 14720 KB Output is correct
23 Correct 11 ms 14720 KB Output is correct
24 Correct 11 ms 14720 KB Output is correct
25 Correct 11 ms 14848 KB Output is correct
26 Correct 13 ms 14720 KB Output is correct
27 Correct 11 ms 14592 KB Output is correct
28 Correct 11 ms 14720 KB Output is correct
29 Correct 11 ms 14720 KB Output is correct
30 Correct 11 ms 14720 KB Output is correct
31 Correct 11 ms 14720 KB Output is correct
32 Correct 11 ms 14720 KB Output is correct
33 Correct 12 ms 14720 KB Output is correct
34 Correct 11 ms 14720 KB Output is correct
35 Correct 11 ms 14720 KB Output is correct
36 Correct 11 ms 14720 KB Output is correct
37 Correct 11 ms 14720 KB Output is correct
38 Correct 11 ms 14720 KB Output is correct
39 Correct 168 ms 37424 KB Output is correct
40 Correct 159 ms 37244 KB Output is correct
41 Correct 161 ms 36984 KB Output is correct
42 Correct 172 ms 36984 KB Output is correct
43 Correct 218 ms 50040 KB Output is correct
44 Correct 178 ms 39928 KB Output is correct
45 Correct 162 ms 37112 KB Output is correct
46 Correct 84 ms 43384 KB Output is correct
47 Correct 291 ms 48888 KB Output is correct
48 Correct 408 ms 84732 KB Output is correct
49 Correct 441 ms 83388 KB Output is correct
50 Correct 271 ms 48888 KB Output is correct
51 Correct 268 ms 48888 KB Output is correct
52 Correct 345 ms 49016 KB Output is correct
53 Correct 367 ms 53772 KB Output is correct
54 Correct 457 ms 85752 KB Output is correct
55 Correct 28 ms 17664 KB Output is correct
56 Correct 20 ms 16384 KB Output is correct
57 Correct 105 ms 34496 KB Output is correct
58 Correct 74 ms 28776 KB Output is correct
59 Correct 123 ms 51144 KB Output is correct
60 Correct 373 ms 86776 KB Output is correct
61 Correct 305 ms 55416 KB Output is correct
62 Correct 277 ms 51832 KB Output is correct
63 Correct 328 ms 51960 KB Output is correct
64 Correct 583 ms 103124 KB Output is correct
65 Correct 567 ms 102888 KB Output is correct
66 Correct 412 ms 83448 KB Output is correct
67 Correct 244 ms 44808 KB Output is correct
68 Correct 427 ms 68000 KB Output is correct
69 Correct 437 ms 68216 KB Output is correct
70 Correct 404 ms 65528 KB Output is correct