답안 #492833

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
492833 2021-12-09T07:13:51 Z yt1234 경주 (Race) (IOI11_race) C++17
100 / 100
542 ms 103112 KB
#include<bits/stdc++.h>
using namespace std;

vector<vector<pair<int, int>>> adj(200000);
vector<map<int64_t, int>> mp(200000);
int offsetw[200000];
int offsetl[200000];
int k;
int ans = INT_MAX;

void dfs(int c, int p, int w = 0) {
    mp[c][0] = 0;
    offsetl[c] = 0;
    offsetw[c] = 0;
    for (auto &i : adj[c]) {
        if (i.first == p) continue;
        int x = i.first;
        dfs(x, c, i.second);
        if (mp[c].size() < mp[x].size()) {
            swap(mp[x], mp[c]);
            swap(offsetl[c], offsetl[x]);
            swap(offsetw[c], offsetw[x]);
        }
        for (auto &j : mp[x]) {
            auto it = mp[c].find(k - (j.first + offsetw[x]) - offsetw[c]);
            if (it != mp[c].end()) ans = min(ans, j.second + it->second + 1 + offsetl[c] + offsetl[x]);
        }
        for (auto &j : mp[x]) {
            auto it = mp[c].find(j.first + offsetw[x] - offsetw[c]);
            if (it != mp[c].end()) {
                it->second = min(it->second, j.second + offsetl[x] - offsetl[c]);
            }
            else {
                mp[c][j.first + offsetw[x] - offsetw[c]] = j.second + offsetl[x] - offsetl[c];
            }
        }
    }
    offsetl[c]++;
    offsetw[c] += w;
}

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

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 8 ms 14412 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 10 ms 14412 KB Output is correct
11 Correct 8 ms 14356 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 10 ms 14452 KB Output is correct
14 Correct 8 ms 14412 KB Output is correct
15 Correct 8 ms 14344 KB Output is correct
16 Correct 8 ms 14428 KB Output is correct
17 Correct 8 ms 14352 KB Output is correct
18 Correct 8 ms 14412 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 8 ms 14412 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 10 ms 14412 KB Output is correct
11 Correct 8 ms 14356 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 10 ms 14452 KB Output is correct
14 Correct 8 ms 14412 KB Output is correct
15 Correct 8 ms 14344 KB Output is correct
16 Correct 8 ms 14428 KB Output is correct
17 Correct 8 ms 14352 KB Output is correct
18 Correct 8 ms 14412 KB Output is correct
19 Correct 7 ms 14408 KB Output is correct
20 Correct 8 ms 14412 KB Output is correct
21 Correct 9 ms 14668 KB Output is correct
22 Correct 9 ms 14668 KB Output is correct
23 Correct 10 ms 14668 KB Output is correct
24 Correct 11 ms 14668 KB Output is correct
25 Correct 9 ms 14668 KB Output is correct
26 Correct 10 ms 14676 KB Output is correct
27 Correct 9 ms 14544 KB Output is correct
28 Correct 9 ms 14676 KB Output is correct
29 Correct 10 ms 14604 KB Output is correct
30 Correct 10 ms 14800 KB Output is correct
31 Correct 9 ms 14668 KB Output is correct
32 Correct 11 ms 14612 KB Output is correct
33 Correct 10 ms 14668 KB Output is correct
34 Correct 9 ms 14688 KB Output is correct
35 Correct 11 ms 14624 KB Output is correct
36 Correct 9 ms 14668 KB Output is correct
37 Correct 10 ms 14540 KB Output is correct
38 Correct 9 ms 14668 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 8 ms 14412 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 10 ms 14412 KB Output is correct
11 Correct 8 ms 14356 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 10 ms 14452 KB Output is correct
14 Correct 8 ms 14412 KB Output is correct
15 Correct 8 ms 14344 KB Output is correct
16 Correct 8 ms 14428 KB Output is correct
17 Correct 8 ms 14352 KB Output is correct
18 Correct 8 ms 14412 KB Output is correct
19 Correct 118 ms 36988 KB Output is correct
20 Correct 136 ms 36960 KB Output is correct
21 Correct 131 ms 36648 KB Output is correct
22 Correct 161 ms 36328 KB Output is correct
23 Correct 171 ms 49072 KB Output is correct
24 Correct 136 ms 39656 KB Output is correct
25 Correct 99 ms 37584 KB Output is correct
26 Correct 63 ms 45892 KB Output is correct
27 Correct 192 ms 47808 KB Output is correct
28 Correct 335 ms 90176 KB Output is correct
29 Correct 376 ms 88244 KB Output is correct
30 Correct 187 ms 47852 KB Output is correct
31 Correct 192 ms 47860 KB Output is correct
32 Correct 266 ms 47996 KB Output is correct
33 Correct 307 ms 52876 KB Output is correct
34 Correct 365 ms 85704 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14412 KB Output is correct
2 Correct 8 ms 14412 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 8 ms 14412 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 10 ms 14412 KB Output is correct
11 Correct 8 ms 14356 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 10 ms 14452 KB Output is correct
14 Correct 8 ms 14412 KB Output is correct
15 Correct 8 ms 14344 KB Output is correct
16 Correct 8 ms 14428 KB Output is correct
17 Correct 8 ms 14352 KB Output is correct
18 Correct 8 ms 14412 KB Output is correct
19 Correct 7 ms 14408 KB Output is correct
20 Correct 8 ms 14412 KB Output is correct
21 Correct 9 ms 14668 KB Output is correct
22 Correct 9 ms 14668 KB Output is correct
23 Correct 10 ms 14668 KB Output is correct
24 Correct 11 ms 14668 KB Output is correct
25 Correct 9 ms 14668 KB Output is correct
26 Correct 10 ms 14676 KB Output is correct
27 Correct 9 ms 14544 KB Output is correct
28 Correct 9 ms 14676 KB Output is correct
29 Correct 10 ms 14604 KB Output is correct
30 Correct 10 ms 14800 KB Output is correct
31 Correct 9 ms 14668 KB Output is correct
32 Correct 11 ms 14612 KB Output is correct
33 Correct 10 ms 14668 KB Output is correct
34 Correct 9 ms 14688 KB Output is correct
35 Correct 11 ms 14624 KB Output is correct
36 Correct 9 ms 14668 KB Output is correct
37 Correct 10 ms 14540 KB Output is correct
38 Correct 9 ms 14668 KB Output is correct
39 Correct 118 ms 36988 KB Output is correct
40 Correct 136 ms 36960 KB Output is correct
41 Correct 131 ms 36648 KB Output is correct
42 Correct 161 ms 36328 KB Output is correct
43 Correct 171 ms 49072 KB Output is correct
44 Correct 136 ms 39656 KB Output is correct
45 Correct 99 ms 37584 KB Output is correct
46 Correct 63 ms 45892 KB Output is correct
47 Correct 192 ms 47808 KB Output is correct
48 Correct 335 ms 90176 KB Output is correct
49 Correct 376 ms 88244 KB Output is correct
50 Correct 187 ms 47852 KB Output is correct
51 Correct 192 ms 47860 KB Output is correct
52 Correct 266 ms 47996 KB Output is correct
53 Correct 307 ms 52876 KB Output is correct
54 Correct 365 ms 85704 KB Output is correct
55 Correct 28 ms 17612 KB Output is correct
56 Correct 15 ms 16320 KB Output is correct
57 Correct 75 ms 34404 KB Output is correct
58 Correct 52 ms 27560 KB Output is correct
59 Correct 119 ms 52072 KB Output is correct
60 Correct 348 ms 88708 KB Output is correct
61 Correct 236 ms 51416 KB Output is correct
62 Correct 209 ms 47904 KB Output is correct
63 Correct 258 ms 47968 KB Output is correct
64 Correct 454 ms 103112 KB Output is correct
65 Correct 542 ms 101328 KB Output is correct
66 Correct 343 ms 84400 KB Output is correct
67 Correct 180 ms 42292 KB Output is correct
68 Correct 432 ms 64968 KB Output is correct
69 Correct 415 ms 69896 KB Output is correct
70 Correct 380 ms 62932 KB Output is correct