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답안 #1047969

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1047969 2024-08-07T19:08:26 Z manhlinh1501 경주 (Race) (IOI11_race) C++17
100 / 100
 270 ms 105044 KB 
//#include "race.h"
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
using pii = pair<int, int>;
const int MAXN = 2e5 + 5;
const int oo32 = 2e9;
#define sz(a) (int)a.size()
int N, K;
vector<pii> adj[MAXN];
map<i64, int> dp[MAXN];
int ans = oo32;

void DFS(int u, i64 c = 0, int depth = 0, int p = -1) {
    dp[u][c] = depth;
    for(auto [v, w] : adj[u]) {
        if(v == p) continue;
        DFS(v, c + w, depth + 1, u);
        if(dp[u].size() < dp[v].size()) swap(dp[u], dp[v]);
        for(auto [x, y] : dp[v]) {
            if(dp[u].find(c + K - (x - c)) != dp[u].end())
                ans = min(ans, y + dp[u][c + K - (x - c)] - 2 * depth);
        }
        for(auto [x, y] : dp[v]) {
            if(dp[u].find(x) != dp[u].end())
                dp[u][x] = min(dp[u][x], y);
            else dp[u][x] = y;
        }
    }
}

int best_path(int _N, int _K, int H[][2], int L[]) {
    N = _N;
    K = _K;
    ans = oo32;
    for(int i = 0; i < N - 1; i++) {
        int u = H[i][0];
        int v = H[i][1];
        int w = L[i];
        u++;
        v++;
        adj[u].emplace_back(v, w);
        adj[v].emplace_back(u, w);
    }
    DFS(1);
    return (ans == oo32 ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 18008 KB Output is correct
2 Correct 2 ms 18168 KB Output is correct
3 Correct 2 ms 18012 KB Output is correct
4 Correct 2 ms 18148 KB Output is correct
5 Correct 2 ms 18008 KB Output is correct
6 Correct 2 ms 18012 KB Output is correct
7 Correct 2 ms 18012 KB Output is correct
8 Correct 2 ms 18012 KB Output is correct
9 Correct 2 ms 18012 KB Output is correct
10 Correct 2 ms 18012 KB Output is correct
11 Correct 2 ms 18012 KB Output is correct
12 Correct 3 ms 18008 KB Output is correct
13 Correct 3 ms 18012 KB Output is correct
14 Correct 3 ms 18212 KB Output is correct
15 Correct 2 ms 18012 KB Output is correct
16 Correct 2 ms 18012 KB Output is correct
17 Correct 2 ms 18104 KB Output is correct
18 Correct 3 ms 18164 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 18008 KB Output is correct
2 Correct 2 ms 18168 KB Output is correct
3 Correct 2 ms 18012 KB Output is correct
4 Correct 2 ms 18148 KB Output is correct
5 Correct 2 ms 18008 KB Output is correct
6 Correct 2 ms 18012 KB Output is correct
7 Correct 2 ms 18012 KB Output is correct
8 Correct 2 ms 18012 KB Output is correct
9 Correct 2 ms 18012 KB Output is correct
10 Correct 2 ms 18012 KB Output is correct
11 Correct 2 ms 18012 KB Output is correct
12 Correct 3 ms 18008 KB Output is correct
13 Correct 3 ms 18012 KB Output is correct
14 Correct 3 ms 18212 KB Output is correct
15 Correct 2 ms 18012 KB Output is correct
16 Correct 2 ms 18012 KB Output is correct
17 Correct 2 ms 18104 KB Output is correct
18 Correct 3 ms 18164 KB Output is correct
19 Correct 2 ms 18012 KB Output is correct
20 Correct 2 ms 18012 KB Output is correct
21 Correct 3 ms 18268 KB Output is correct
22 Correct 3 ms 18296 KB Output is correct
23 Correct 3 ms 18416 KB Output is correct
24 Correct 3 ms 18268 KB Output is correct
25 Correct 3 ms 18268 KB Output is correct
26 Correct 3 ms 18440 KB Output is correct
27 Correct 2 ms 18244 KB Output is correct
28 Correct 3 ms 18268 KB Output is correct
29 Correct 3 ms 18268 KB Output is correct
30 Correct 3 ms 18268 KB Output is correct
31 Correct 3 ms 18264 KB Output is correct
32 Correct 3 ms 18436 KB Output is correct
33 Correct 3 ms 18268 KB Output is correct
34 Correct 3 ms 18268 KB Output is correct
35 Correct 2 ms 18268 KB Output is correct
36 Correct 3 ms 18268 KB Output is correct
37 Correct 3 ms 18376 KB Output is correct
38 Correct 3 ms 18268 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 18008 KB Output is correct
2 Correct 2 ms 18168 KB Output is correct
3 Correct 2 ms 18012 KB Output is correct
4 Correct 2 ms 18148 KB Output is correct
5 Correct 2 ms 18008 KB Output is correct
6 Correct 2 ms 18012 KB Output is correct
7 Correct 2 ms 18012 KB Output is correct
8 Correct 2 ms 18012 KB Output is correct
9 Correct 2 ms 18012 KB Output is correct
10 Correct 2 ms 18012 KB Output is correct
11 Correct 2 ms 18012 KB Output is correct
12 Correct 3 ms 18008 KB Output is correct
13 Correct 3 ms 18012 KB Output is correct
14 Correct 3 ms 18212 KB Output is correct
15 Correct 2 ms 18012 KB Output is correct
16 Correct 2 ms 18012 KB Output is correct
17 Correct 2 ms 18104 KB Output is correct
18 Correct 3 ms 18164 KB Output is correct
19 Correct 65 ms 40788 KB Output is correct
20 Correct 62 ms 40784 KB Output is correct
21 Correct 66 ms 40532 KB Output is correct
22 Correct 63 ms 40272 KB Output is correct
23 Correct 89 ms 53072 KB Output is correct
24 Correct 68 ms 43600 KB Output is correct
25 Correct 53 ms 41556 KB Output is correct
26 Correct 37 ms 49744 KB Output is correct
27 Correct 102 ms 49748 KB Output is correct
28 Correct 161 ms 92032 KB Output is correct
29 Correct 157 ms 90452 KB Output is correct
30 Correct 112 ms 49748 KB Output is correct
31 Correct 108 ms 49744 KB Output is correct
32 Correct 124 ms 50008 KB Output is correct
33 Correct 127 ms 54768 KB Output is correct
34 Correct 189 ms 87632 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 18008 KB Output is correct
2 Correct 2 ms 18168 KB Output is correct
3 Correct 2 ms 18012 KB Output is correct
4 Correct 2 ms 18148 KB Output is correct
5 Correct 2 ms 18008 KB Output is correct
6 Correct 2 ms 18012 KB Output is correct
7 Correct 2 ms 18012 KB Output is correct
8 Correct 2 ms 18012 KB Output is correct
9 Correct 2 ms 18012 KB Output is correct
10 Correct 2 ms 18012 KB Output is correct
11 Correct 2 ms 18012 KB Output is correct
12 Correct 3 ms 18008 KB Output is correct
13 Correct 3 ms 18012 KB Output is correct
14 Correct 3 ms 18212 KB Output is correct
15 Correct 2 ms 18012 KB Output is correct
16 Correct 2 ms 18012 KB Output is correct
17 Correct 2 ms 18104 KB Output is correct
18 Correct 3 ms 18164 KB Output is correct
19 Correct 2 ms 18012 KB Output is correct
20 Correct 2 ms 18012 KB Output is correct
21 Correct 3 ms 18268 KB Output is correct
22 Correct 3 ms 18296 KB Output is correct
23 Correct 3 ms 18416 KB Output is correct
24 Correct 3 ms 18268 KB Output is correct
25 Correct 3 ms 18268 KB Output is correct
26 Correct 3 ms 18440 KB Output is correct
27 Correct 2 ms 18244 KB Output is correct
28 Correct 3 ms 18268 KB Output is correct
29 Correct 3 ms 18268 KB Output is correct
30 Correct 3 ms 18268 KB Output is correct
31 Correct 3 ms 18264 KB Output is correct
32 Correct 3 ms 18436 KB Output is correct
33 Correct 3 ms 18268 KB Output is correct
34 Correct 3 ms 18268 KB Output is correct
35 Correct 2 ms 18268 KB Output is correct
36 Correct 3 ms 18268 KB Output is correct
37 Correct 3 ms 18376 KB Output is correct
38 Correct 3 ms 18268 KB Output is correct
39 Correct 65 ms 40788 KB Output is correct
40 Correct 62 ms 40784 KB Output is correct
41 Correct 66 ms 40532 KB Output is correct
42 Correct 63 ms 40272 KB Output is correct
43 Correct 89 ms 53072 KB Output is correct
44 Correct 68 ms 43600 KB Output is correct
45 Correct 53 ms 41556 KB Output is correct
46 Correct 37 ms 49744 KB Output is correct
47 Correct 102 ms 49748 KB Output is correct
48 Correct 161 ms 92032 KB Output is correct
49 Correct 157 ms 90452 KB Output is correct
50 Correct 112 ms 49748 KB Output is correct
51 Correct 108 ms 49744 KB Output is correct
52 Correct 124 ms 50008 KB Output is correct
53 Correct 127 ms 54768 KB Output is correct
54 Correct 189 ms 87632 KB Output is correct
55 Correct 10 ms 21084 KB Output is correct
56 Correct 6 ms 19820 KB Output is correct
57 Correct 36 ms 38232 KB Output is correct
58 Correct 35 ms 31444 KB Output is correct
59 Correct 57 ms 56008 KB Output is correct
60 Correct 157 ms 90728 KB Output is correct
61 Correct 126 ms 53268 KB Output is correct
62 Correct 99 ms 49988 KB Output is correct
63 Correct 129 ms 49940 KB Output is correct
64 Correct 266 ms 105044 KB Output is correct
65 Correct 270 ms 103504 KB Output is correct
66 Correct 169 ms 86352 KB Output is correct
67 Correct 107 ms 44228 KB Output is correct
68 Correct 222 ms 66828 KB Output is correct
69 Correct 230 ms 72016 KB Output is correct
70 Correct 224 ms 65008 KB Output is correct