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답안 #1067058

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1067058 2024-08-20T10:28:07 Z Thunnus 경주 (Race) (IOI11_race) C++17
100 / 100
 348 ms 104396 KB 
#include "race.h"
#include<bits/stdc++.h>
using namespace std;
using i64 = long long;
#define int i64
#define vi vector<int>
#define vvi vector<vi>
#define vb vector<bool>
#define pii pair<int, int>
#define fi first
#define se second
#define sz(x) (int)(x).size()

const int MAXN = 2e5 + 5;
int ans = LLONG_MAX, k;
vector<map<int, int>> mp(MAXN);

inline void dfs(vector<vector<pii>> &adj, int v = 0, int p = -1, int dist = 0, int dep = 0){
    for(pii &u : adj[v]){
        if(u.fi == p) continue;
        dfs(adj, u.fi, v, dist + u.se, dep + 1);
    }
    mp[v][dist] = dep;
    for(pii &u : adj[v]){
        if(u.fi == p) continue;
        if(sz(mp[u.fi]) > sz(mp[v])) mp[v].swap(mp[u.fi]);
        for(auto &it : mp[u.fi]){
            if(mp[v].count(k - (it.fi - 2 * dist))){ // distance with lca
                ans = min(ans, mp[v][k - (it.fi - 2 * dist)] + it.se - 2 * dep);
            }
        }
        for(auto &it : mp[u.fi]){
            if(!mp[v].count(it.fi)) mp[v][it.fi] = it.se;
            else mp[v][it.fi] = min(mp[v][it.fi], it.se);
            if(it.fi - dist == k){
                ans = min(ans, it.se - dep);
            } 
        }
    }
}

int32_t best_path(int32_t n, int32_t K, int32_t h[][2], int32_t l[]){
	k = K;
    vector<vector<pii>> adj(n);
    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(adj);
    return (ans == LLONG_MAX ? -1 : ans);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9816 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9852 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9716 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9852 KB Output is correct
12 Correct 4 ms 9648 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9816 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 10072 KB Output is correct
18 Correct 5 ms 9820 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9816 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9852 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9716 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9852 KB Output is correct
12 Correct 4 ms 9648 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9816 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 10072 KB Output is correct
18 Correct 5 ms 9820 KB Output is correct
19 Correct 4 ms 9816 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 5 ms 10076 KB Output is correct
22 Correct 4 ms 10076 KB Output is correct
23 Correct 5 ms 10076 KB Output is correct
24 Correct 5 ms 10072 KB Output is correct
25 Correct 5 ms 10076 KB Output is correct
26 Correct 5 ms 10076 KB Output is correct
27 Correct 4 ms 9820 KB Output is correct
28 Correct 4 ms 10076 KB Output is correct
29 Correct 5 ms 10076 KB Output is correct
30 Correct 5 ms 10076 KB Output is correct
31 Correct 5 ms 10076 KB Output is correct
32 Correct 5 ms 10116 KB Output is correct
33 Correct 5 ms 10076 KB Output is correct
34 Correct 4 ms 10076 KB Output is correct
35 Correct 5 ms 10328 KB Output is correct
36 Correct 5 ms 10076 KB Output is correct
37 Correct 5 ms 9872 KB Output is correct
38 Correct 5 ms 10076 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9816 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9852 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9716 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9852 KB Output is correct
12 Correct 4 ms 9648 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9816 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 10072 KB Output is correct
18 Correct 5 ms 9820 KB Output is correct
19 Correct 90 ms 35408 KB Output is correct
20 Correct 90 ms 35412 KB Output is correct
21 Correct 77 ms 35060 KB Output is correct
22 Correct 84 ms 34640 KB Output is correct
23 Correct 130 ms 47432 KB Output is correct
24 Correct 92 ms 37532 KB Output is correct
25 Correct 71 ms 34452 KB Output is correct
26 Correct 48 ms 41296 KB Output is correct
27 Correct 128 ms 49488 KB Output is correct
28 Correct 214 ms 85588 KB Output is correct
29 Correct 216 ms 84136 KB Output is correct
30 Correct 127 ms 49488 KB Output is correct
31 Correct 126 ms 49492 KB Output is correct
32 Correct 152 ms 49488 KB Output is correct
33 Correct 184 ms 54280 KB Output is correct
34 Correct 267 ms 87124 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9816 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9852 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9716 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9852 KB Output is correct
12 Correct 4 ms 9648 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9816 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 10072 KB Output is correct
18 Correct 5 ms 9820 KB Output is correct
19 Correct 4 ms 9816 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 5 ms 10076 KB Output is correct
22 Correct 4 ms 10076 KB Output is correct
23 Correct 5 ms 10076 KB Output is correct
24 Correct 5 ms 10072 KB Output is correct
25 Correct 5 ms 10076 KB Output is correct
26 Correct 5 ms 10076 KB Output is correct
27 Correct 4 ms 9820 KB Output is correct
28 Correct 4 ms 10076 KB Output is correct
29 Correct 5 ms 10076 KB Output is correct
30 Correct 5 ms 10076 KB Output is correct
31 Correct 5 ms 10076 KB Output is correct
32 Correct 5 ms 10116 KB Output is correct
33 Correct 5 ms 10076 KB Output is correct
34 Correct 4 ms 10076 KB Output is correct
35 Correct 5 ms 10328 KB Output is correct
36 Correct 5 ms 10076 KB Output is correct
37 Correct 5 ms 9872 KB Output is correct
38 Correct 5 ms 10076 KB Output is correct
39 Correct 90 ms 35408 KB Output is correct
40 Correct 90 ms 35412 KB Output is correct
41 Correct 77 ms 35060 KB Output is correct
42 Correct 84 ms 34640 KB Output is correct
43 Correct 130 ms 47432 KB Output is correct
44 Correct 92 ms 37532 KB Output is correct
45 Correct 71 ms 34452 KB Output is correct
46 Correct 48 ms 41296 KB Output is correct
47 Correct 128 ms 49488 KB Output is correct
48 Correct 214 ms 85588 KB Output is correct
49 Correct 216 ms 84136 KB Output is correct
50 Correct 127 ms 49488 KB Output is correct
51 Correct 126 ms 49492 KB Output is correct
52 Correct 152 ms 49488 KB Output is correct
53 Correct 184 ms 54280 KB Output is correct
54 Correct 267 ms 87124 KB Output is correct
55 Correct 14 ms 13400 KB Output is correct
56 Correct 9 ms 11868 KB Output is correct
57 Correct 48 ms 32852 KB Output is correct
58 Correct 39 ms 25364 KB Output is correct
59 Correct 70 ms 47440 KB Output is correct
60 Correct 216 ms 84264 KB Output is correct
61 Correct 150 ms 52992 KB Output is correct
62 Correct 178 ms 49568 KB Output is correct
63 Correct 152 ms 49632 KB Output is correct
64 Correct 348 ms 104396 KB Output is correct
65 Correct 321 ms 102480 KB Output is correct
66 Correct 225 ms 81228 KB Output is correct
67 Correct 114 ms 42428 KB Output is correct
68 Correct 258 ms 65872 KB Output is correct
69 Correct 274 ms 70712 KB Output is correct
70 Correct 232 ms 63316 KB Output is correct