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답안 #679300

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
679300 2023-01-08T02:20:49 Z bachhoangxuan 경주 (Race) (IOI11_race) C++17
100 / 100
 535 ms 52532 KB 
#include "race.h"
#include<bits/stdc++.h>
using namespace std;
#define maxn 200005
#define ll long long
#define pii pair<ll,ll>
ll n,k,son[maxn],lans,nans,d[maxn],dist[maxn];
vector<pii>  edge[maxn];
map<ll,pii> mp;
vector<ll> p;
ll pre_dfs(ll u,ll par){
    ll Max=0,cu=1;
    d[u]=d[par]+1;
    for(pii v:edge[u]){
        if(v.first==par) continue;
        dist[v.first]=dist[u]+v.second;
        ll cv=pre_dfs(v.first,u);
        if(cv>Max){Max=cv;son[u]=v.first;}
        cu+=cv;
    }
    return cu;
}
void add(ll u){
    if(mp.find(dist[u])==mp.end() || mp[dist[u]].first>d[u]) mp[dist[u]]={d[u],1};
    else if(mp[dist[u]].first==d[u]) mp[dist[u]].second++;
}
void update(ll l,ll u,ll anc){
    if(mp.find(l)!=mp.end()){
        if(lans>mp[l].first+d[u]-2*d[anc]){
            lans=mp[l].first+d[u]-2*d[anc];
            nans=mp[l].second;
        }
        else if(lans==mp[l].first+d[u]-2*d[anc]) nans+=mp[l].second;
    }
}
void cal(ll u,ll par,ll anc){
    p.push_back(u);
    update(k+2*dist[anc]-dist[u],u,anc);
    for(pii v:edge[u]){
        if(v.first==par) continue;
        cal(v.first,u,anc);
    }
}
void dfs(ll u,ll par,ll t){
    for(pii v:edge[u]){
        if(v.first!=son[u] && v.first!=par) dfs(v.first,u,1);
    }
    if(son[u]) dfs(son[u],u,0);
    //cout << u << " " << dist[u] << ' ' << par << ' ' << t << '\n';
    add(u);update(dist[u]+k,u,u);
    for(pii v:edge[u]){
        if(v.first==par || v.first==son[u]) continue;
        cal(v.first,u,u);
        for(ll x:p) add(x);
        p.clear();
    }
    //for(auto it:mp) cout << it.first << " " << it.second.first << " " << it.second.second << '\n';
    if(t) mp.clear();
}
int best_path(int N,int K,int H[][2],int L[]){
    n=N;k=K;
    for(ll i=0;i<n-1;i++){
        ll u=H[i][0],v=H[i][1],w=L[i];
        u++;v++;
        edge[u].push_back({v,w});
        edge[v].push_back({u,w});
    }
    lans=LLONG_MAX;
    pre_dfs(1,0);dfs(1,0,0);
    if(lans==LLONG_MAX) return -1;
    else return (int)lans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5020 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5020 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5148 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5204 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 4 ms 5204 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5204 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 3 ms 5204 KB Output is correct
31 Correct 4 ms 5204 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 3 ms 5152 KB Output is correct
35 Correct 3 ms 5156 KB Output is correct
36 Correct 3 ms 5204 KB Output is correct
37 Correct 3 ms 5152 KB Output is correct
38 Correct 4 ms 5152 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5020 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 158 ms 15644 KB Output is correct
20 Correct 156 ms 15308 KB Output is correct
21 Correct 159 ms 15640 KB Output is correct
22 Correct 153 ms 15436 KB Output is correct
23 Correct 170 ms 15896 KB Output is correct
24 Correct 123 ms 15100 KB Output is correct
25 Correct 93 ms 19608 KB Output is correct
26 Correct 47 ms 22348 KB Output is correct
27 Correct 186 ms 25792 KB Output is correct
28 Correct 213 ms 52532 KB Output is correct
29 Correct 235 ms 51464 KB Output is correct
30 Correct 186 ms 25888 KB Output is correct
31 Correct 193 ms 25868 KB Output is correct
32 Correct 271 ms 26012 KB Output is correct
33 Correct 278 ms 25620 KB Output is correct
34 Correct 365 ms 38120 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5020 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5148 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5204 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 4 ms 5204 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5204 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 3 ms 5204 KB Output is correct
31 Correct 4 ms 5204 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 3 ms 5152 KB Output is correct
35 Correct 3 ms 5156 KB Output is correct
36 Correct 3 ms 5204 KB Output is correct
37 Correct 3 ms 5152 KB Output is correct
38 Correct 4 ms 5152 KB Output is correct
39 Correct 158 ms 15644 KB Output is correct
40 Correct 156 ms 15308 KB Output is correct
41 Correct 159 ms 15640 KB Output is correct
42 Correct 153 ms 15436 KB Output is correct
43 Correct 170 ms 15896 KB Output is correct
44 Correct 123 ms 15100 KB Output is correct
45 Correct 93 ms 19608 KB Output is correct
46 Correct 47 ms 22348 KB Output is correct
47 Correct 186 ms 25792 KB Output is correct
48 Correct 213 ms 52532 KB Output is correct
49 Correct 235 ms 51464 KB Output is correct
50 Correct 186 ms 25888 KB Output is correct
51 Correct 193 ms 25868 KB Output is correct
52 Correct 271 ms 26012 KB Output is correct
53 Correct 278 ms 25620 KB Output is correct
54 Correct 365 ms 38120 KB Output is correct
55 Correct 15 ms 6356 KB Output is correct
56 Correct 10 ms 6044 KB Output is correct
57 Correct 90 ms 15620 KB Output is correct
58 Correct 51 ms 13440 KB Output is correct
59 Correct 75 ms 28540 KB Output is correct
60 Correct 207 ms 51736 KB Output is correct
61 Correct 224 ms 27724 KB Output is correct
62 Correct 198 ms 25888 KB Output is correct
63 Correct 242 ms 26012 KB Output is correct
64 Correct 535 ms 32280 KB Output is correct
65 Correct 483 ms 38760 KB Output is correct
66 Correct 227 ms 49332 KB Output is correct
67 Correct 159 ms 24928 KB Output is correct
68 Correct 322 ms 36492 KB Output is correct
69 Correct 327 ms 36460 KB Output is correct
70 Correct 327 ms 34916 KB Output is correct