oj.uz

답안 #727300

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
727300 2023-04-20T11:43:46 Z colossal_pepe 경주 (Race) (IOI11_race) C++17
100 / 100
 396 ms 66556 KB 
#include "race.h"
#include <iostream>
#include <vector>
#include <map>
using namespace std;

int n, k, ans = 1e9;
vector<vector<pair<int, int>>> g;

map<int, int> dfs(int u, int par, int s, int d) {
    map<int, int> ret;
    ret[s] = d;
    for (auto [v, w] : g[u]) {
        if (v == par) continue;
        map<int, int> res = dfs(v, u, s + w, d + 1);
        if (ret.size() < res.size()) swap(ret, res);
        for (auto [sv, dv] : res) {
            int su = k - (sv - 2 * s);
            if (ret.find(su) != ret.end()) ans = min(ans, dv + ret[su] - 2 * d);
        }
        for (auto [sv, dv] : res) {
            if (ret.find(sv) != ret.end()) ret[sv] = min(ret[sv], dv);
            else ret[sv] = dv;
        }
    }
    return ret;
}

int best_path(int N, int K, int H[][2], int L[]) {
    n = N;
    k = K;
    g.resize(n);
    for (int i = 0; i < n - 1; i++) {
        g[H[i][0]].push_back({H[i][1], L[i]});
        g[H[i][1]].push_back({H[i][0], L[i]});
    }
    dfs(0, 0, 0, 0);
    return (ans > n ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 1 ms 448 KB Output is correct
25 Correct 1 ms 448 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 2 ms 448 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 2 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 2 ms 468 KB Output is correct
38 Correct 1 ms 340 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 99 ms 8780 KB Output is correct
20 Correct 84 ms 8888 KB Output is correct
21 Correct 86 ms 8816 KB Output is correct
22 Correct 94 ms 8892 KB Output is correct
23 Correct 108 ms 9348 KB Output is correct
24 Correct 86 ms 9108 KB Output is correct
25 Correct 76 ms 21688 KB Output is correct
26 Correct 60 ms 33232 KB Output is correct
27 Correct 166 ms 18084 KB Output is correct
28 Correct 211 ms 66556 KB Output is correct
29 Correct 229 ms 64312 KB Output is correct
30 Correct 168 ms 18028 KB Output is correct
31 Correct 178 ms 18052 KB Output is correct
32 Correct 178 ms 18248 KB Output is correct
33 Correct 171 ms 17456 KB Output is correct
34 Correct 297 ms 27724 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 1 ms 448 KB Output is correct
25 Correct 1 ms 448 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 2 ms 448 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 2 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 2 ms 468 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 99 ms 8780 KB Output is correct
40 Correct 84 ms 8888 KB Output is correct
41 Correct 86 ms 8816 KB Output is correct
42 Correct 94 ms 8892 KB Output is correct
43 Correct 108 ms 9348 KB Output is correct
44 Correct 86 ms 9108 KB Output is correct
45 Correct 76 ms 21688 KB Output is correct
46 Correct 60 ms 33232 KB Output is correct
47 Correct 166 ms 18084 KB Output is correct
48 Correct 211 ms 66556 KB Output is correct
49 Correct 229 ms 64312 KB Output is correct
50 Correct 168 ms 18028 KB Output is correct
51 Correct 178 ms 18052 KB Output is correct
52 Correct 178 ms 18248 KB Output is correct
53 Correct 171 ms 17456 KB Output is correct
54 Correct 297 ms 27724 KB Output is correct
55 Correct 16 ms 1432 KB Output is correct
56 Correct 6 ms 1108 KB Output is correct
57 Correct 52 ms 9016 KB Output is correct
58 Correct 45 ms 8812 KB Output is correct
59 Correct 85 ms 33308 KB Output is correct
60 Correct 214 ms 64904 KB Output is correct
61 Correct 215 ms 19568 KB Output is correct
62 Correct 203 ms 17996 KB Output is correct
63 Correct 187 ms 18112 KB Output is correct
64 Correct 396 ms 24608 KB Output is correct
65 Correct 370 ms 28076 KB Output is correct
66 Correct 234 ms 59220 KB Output is correct
67 Correct 126 ms 18604 KB Output is correct
68 Correct 287 ms 26616 KB Output is correct
69 Correct 308 ms 30292 KB Output is correct
70 Correct 252 ms 25560 KB Output is correct