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답안 #499804

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
499804 2021-12-29T13:18:14 Z HappyPacMan 경주 (Race) (IOI11_race) C++14
100 / 100
 458 ms 97988 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5 + 15;
vector<pair<int,int> > adj[MAXN];
map<long long,int> cost[MAXN];
int res = MAXN;

void dfs(int u,int p,long long k,long long d,int l){
    cost[u][d] = l;
    for(auto v : adj[u]){
        if(v.first == p) continue;
        dfs(v.first,u,k,d+v.second,l+1);
        if(cost[u].size() < cost[v.first].size()) swap(cost[u],cost[v.first]);
        for(auto w : cost[v.first]){
            long long split = k - w.first + 2*d;
            if(cost[u].count(split)) res = min(res,w.second+cost[u][split]-2*l);
        }
        for(auto w : cost[v.first]){
            if(cost[u].count(w.first)) cost[u][w.first] = min(cost[u][w.first],w.second);
            else cost[u][w.first] = w.second;
        }
    }
    if(cost[u].count(d+k)) res = min(res,cost[u][d+k]-l);
}

int best_path(int N, int K, int H[][2], int L[]){
    for(int i=0;i<N-1;i++){
        adj[H[i][0]].emplace_back(H[i][1],L[i]);
        adj[H[i][1]].emplace_back(H[i][0],L[i]);
    }
    dfs(0,0,K,0,0);
    if(res == MAXN) res = -1;
    return res;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14360 KB Output is correct
6 Correct 6 ms 14412 KB Output is correct
7 Correct 7 ms 14392 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14412 KB Output is correct
14 Correct 7 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 8 ms 14412 KB Output is correct
17 Correct 7 ms 14364 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14360 KB Output is correct
6 Correct 6 ms 14412 KB Output is correct
7 Correct 7 ms 14392 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14412 KB Output is correct
14 Correct 7 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 8 ms 14412 KB Output is correct
17 Correct 7 ms 14364 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct
19 Correct 7 ms 14284 KB Output is correct
20 Correct 7 ms 14412 KB Output is correct
21 Correct 8 ms 14540 KB Output is correct
22 Correct 7 ms 14668 KB Output is correct
23 Correct 8 ms 14668 KB Output is correct
24 Correct 8 ms 14668 KB Output is correct
25 Correct 8 ms 14684 KB Output is correct
26 Correct 9 ms 14696 KB Output is correct
27 Correct 7 ms 14540 KB Output is correct
28 Correct 9 ms 14676 KB Output is correct
29 Correct 9 ms 14664 KB Output is correct
30 Correct 8 ms 14668 KB Output is correct
31 Correct 8 ms 14688 KB Output is correct
32 Correct 8 ms 14668 KB Output is correct
33 Correct 8 ms 14668 KB Output is correct
34 Correct 8 ms 14540 KB Output is correct
35 Correct 8 ms 14532 KB Output is correct
36 Correct 8 ms 14540 KB Output is correct
37 Correct 10 ms 14600 KB Output is correct
38 Correct 8 ms 14540 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14360 KB Output is correct
6 Correct 6 ms 14412 KB Output is correct
7 Correct 7 ms 14392 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14412 KB Output is correct
14 Correct 7 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 8 ms 14412 KB Output is correct
17 Correct 7 ms 14364 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct
19 Correct 112 ms 34812 KB Output is correct
20 Correct 116 ms 34736 KB Output is correct
21 Correct 127 ms 34736 KB Output is correct
22 Correct 119 ms 34164 KB Output is correct
23 Correct 155 ms 46728 KB Output is correct
24 Correct 124 ms 37476 KB Output is correct
25 Correct 103 ms 34640 KB Output is correct
26 Correct 57 ms 42180 KB Output is correct
27 Correct 184 ms 43388 KB Output is correct
28 Correct 278 ms 82376 KB Output is correct
29 Correct 300 ms 80652 KB Output is correct
30 Correct 184 ms 43396 KB Output is correct
31 Correct 191 ms 43356 KB Output is correct
32 Correct 249 ms 43408 KB Output is correct
33 Correct 221 ms 48320 KB Output is correct
34 Correct 313 ms 80280 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14360 KB Output is correct
6 Correct 6 ms 14412 KB Output is correct
7 Correct 7 ms 14392 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 7 ms 14412 KB Output is correct
10 Correct 7 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14412 KB Output is correct
14 Correct 7 ms 14392 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 8 ms 14412 KB Output is correct
17 Correct 7 ms 14364 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct
19 Correct 7 ms 14284 KB Output is correct
20 Correct 7 ms 14412 KB Output is correct
21 Correct 8 ms 14540 KB Output is correct
22 Correct 7 ms 14668 KB Output is correct
23 Correct 8 ms 14668 KB Output is correct
24 Correct 8 ms 14668 KB Output is correct
25 Correct 8 ms 14684 KB Output is correct
26 Correct 9 ms 14696 KB Output is correct
27 Correct 7 ms 14540 KB Output is correct
28 Correct 9 ms 14676 KB Output is correct
29 Correct 9 ms 14664 KB Output is correct
30 Correct 8 ms 14668 KB Output is correct
31 Correct 8 ms 14688 KB Output is correct
32 Correct 8 ms 14668 KB Output is correct
33 Correct 8 ms 14668 KB Output is correct
34 Correct 8 ms 14540 KB Output is correct
35 Correct 8 ms 14532 KB Output is correct
36 Correct 8 ms 14540 KB Output is correct
37 Correct 10 ms 14600 KB Output is correct
38 Correct 8 ms 14540 KB Output is correct
39 Correct 112 ms 34812 KB Output is correct
40 Correct 116 ms 34736 KB Output is correct
41 Correct 127 ms 34736 KB Output is correct
42 Correct 119 ms 34164 KB Output is correct
43 Correct 155 ms 46728 KB Output is correct
44 Correct 124 ms 37476 KB Output is correct
45 Correct 103 ms 34640 KB Output is correct
46 Correct 57 ms 42180 KB Output is correct
47 Correct 184 ms 43388 KB Output is correct
48 Correct 278 ms 82376 KB Output is correct
49 Correct 300 ms 80652 KB Output is correct
50 Correct 184 ms 43396 KB Output is correct
51 Correct 191 ms 43356 KB Output is correct
52 Correct 249 ms 43408 KB Output is correct
53 Correct 221 ms 48320 KB Output is correct
54 Correct 313 ms 80280 KB Output is correct
55 Correct 20 ms 17308 KB Output is correct
56 Correct 14 ms 16000 KB Output is correct
57 Correct 74 ms 32104 KB Output is correct
58 Correct 50 ms 25732 KB Output is correct
59 Correct 91 ms 48308 KB Output is correct
60 Correct 263 ms 81220 KB Output is correct
61 Correct 230 ms 46992 KB Output is correct
62 Correct 193 ms 43332 KB Output is correct
63 Correct 242 ms 43448 KB Output is correct
64 Correct 458 ms 97988 KB Output is correct
65 Correct 420 ms 95788 KB Output is correct
66 Correct 295 ms 77332 KB Output is correct
67 Correct 181 ms 37296 KB Output is correct
68 Correct 404 ms 59772 KB Output is correct
69 Correct 385 ms 64708 KB Output is correct
70 Correct 326 ms 57860 KB Output is correct