oj.uz

답안 #719304

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
719304 2023-04-05T17:53:20 Z HunterXD 경주 (Race) (IOI11_race) C++17
100 / 100
 606 ms 37840 KB 
#include "race.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back

int n,ans=1e9,k,tam[200005],vis[200005],min_longi[1000005];
vector<pair<int,int> > v[200005];
void tamanio_tree(int u,int p){
    tam[u]=1;
    for(auto [node,w]:v[u]){
        if(vis[node]==0 && node!=p){
            tamanio_tree(node,u);
            tam[u]+=tam[node];
        }
    }
}

int centroid_descomposition(int u,int p,int want){
    for(auto [node,w]:v[u]){
        if(node!=p && vis[node]==0){
            if(tam[node]>want)return centroid_descomposition(node,u,want);
        }
    }
    return u;
}

void dfs(int u,int p,int type,int depth,int lv){
    if(depth>k)return;
    if(type==1){
        ans=min(ans,lv+min_longi[k-depth]);
    }else if(type==0){
        min_longi[depth]=min(min_longi[depth],lv);
    }else{
        min_longi[depth]=1e9,min_longi[k-depth]=1e9;
    }
    for(auto [node,w]:v[u]){
        if(node!=p && vis[node]==0){
            dfs(node,u,type,depth+w,lv+1);
        }
    }
}

void all_trees(int u){
    tamanio_tree(u,u);
    int cen=centroid_descomposition(u,u,tam[u]/2);
    vis[cen]=1;
    for(auto [node,w]:v[cen]){
        if(vis[node]==0){
            dfs(node,node,2,w,1);
        }
    }
    min_longi[0]=0;
    for(auto [node,w]:v[cen]){
        if(vis[node]==0){
            dfs(node,node,1,w,1);
            dfs(node,node,0,w,1);
        }
    }
    for(auto [node,w]:v[cen]){
        if(vis[node]==0){
            all_trees(node);
        }
    }

}

int best_path(int N, int K, int H[][2], int L[]){
    n=N,k=K;
    for(int i=0;i<n-1;i++){
        v[H[i][0]+1].pb({H[i][1]+1,L[i]});
        v[H[i][1]+1].pb({H[i][0]+1,L[i]});
    }

    for(int i=1;i<=n;i++){
        vis[i]=0;
    }
    for(int i=1;i<=1000000;i++){
        min_longi[i]=1e9;
    }
    all_trees(1);
    return (ans == 1e9) ? -1 : ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 7 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 6 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 5 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 4 ms 8916 KB Output is correct
14 Correct 5 ms 8900 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 7 ms 8916 KB Output is correct
17 Correct 6 ms 8852 KB Output is correct
18 Correct 5 ms 8828 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 7 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 6 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 5 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 4 ms 8916 KB Output is correct
14 Correct 5 ms 8900 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 7 ms 8916 KB Output is correct
17 Correct 6 ms 8852 KB Output is correct
18 Correct 5 ms 8828 KB Output is correct
19 Correct 5 ms 8916 KB Output is correct
20 Correct 5 ms 8860 KB Output is correct
21 Correct 6 ms 9004 KB Output is correct
22 Correct 6 ms 8928 KB Output is correct
23 Correct 6 ms 9004 KB Output is correct
24 Correct 6 ms 8940 KB Output is correct
25 Correct 6 ms 8928 KB Output is correct
26 Correct 6 ms 9008 KB Output is correct
27 Correct 6 ms 8928 KB Output is correct
28 Correct 6 ms 8932 KB Output is correct
29 Correct 7 ms 8996 KB Output is correct
30 Correct 6 ms 8916 KB Output is correct
31 Correct 6 ms 8996 KB Output is correct
32 Correct 6 ms 8916 KB Output is correct
33 Correct 6 ms 8916 KB Output is correct
34 Correct 6 ms 8916 KB Output is correct
35 Correct 5 ms 8916 KB Output is correct
36 Correct 5 ms 8916 KB Output is correct
37 Correct 5 ms 8916 KB Output is correct
38 Correct 6 ms 9044 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 7 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 6 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 5 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 4 ms 8916 KB Output is correct
14 Correct 5 ms 8900 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 7 ms 8916 KB Output is correct
17 Correct 6 ms 8852 KB Output is correct
18 Correct 5 ms 8828 KB Output is correct
19 Correct 155 ms 16000 KB Output is correct
20 Correct 142 ms 15888 KB Output is correct
21 Correct 158 ms 15904 KB Output is correct
22 Correct 161 ms 15992 KB Output is correct
23 Correct 80 ms 16344 KB Output is correct
24 Correct 57 ms 16100 KB Output is correct
25 Correct 130 ms 19472 KB Output is correct
26 Correct 137 ms 23180 KB Output is correct
27 Correct 178 ms 23188 KB Output is correct
28 Correct 290 ms 37840 KB Output is correct
29 Correct 304 ms 36624 KB Output is correct
30 Correct 178 ms 23172 KB Output is correct
31 Correct 166 ms 23368 KB Output is correct
32 Correct 215 ms 23412 KB Output is correct
33 Correct 247 ms 22160 KB Output is correct
34 Correct 214 ms 23116 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8916 KB Output is correct
2 Correct 5 ms 8916 KB Output is correct
3 Correct 7 ms 8916 KB Output is correct
4 Correct 5 ms 8916 KB Output is correct
5 Correct 5 ms 8916 KB Output is correct
6 Correct 6 ms 8916 KB Output is correct
7 Correct 5 ms 8916 KB Output is correct
8 Correct 5 ms 8916 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 5 ms 8916 KB Output is correct
11 Correct 5 ms 8916 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 4 ms 8916 KB Output is correct
14 Correct 5 ms 8900 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 7 ms 8916 KB Output is correct
17 Correct 6 ms 8852 KB Output is correct
18 Correct 5 ms 8828 KB Output is correct
19 Correct 5 ms 8916 KB Output is correct
20 Correct 5 ms 8860 KB Output is correct
21 Correct 6 ms 9004 KB Output is correct
22 Correct 6 ms 8928 KB Output is correct
23 Correct 6 ms 9004 KB Output is correct
24 Correct 6 ms 8940 KB Output is correct
25 Correct 6 ms 8928 KB Output is correct
26 Correct 6 ms 9008 KB Output is correct
27 Correct 6 ms 8928 KB Output is correct
28 Correct 6 ms 8932 KB Output is correct
29 Correct 7 ms 8996 KB Output is correct
30 Correct 6 ms 8916 KB Output is correct
31 Correct 6 ms 8996 KB Output is correct
32 Correct 6 ms 8916 KB Output is correct
33 Correct 6 ms 8916 KB Output is correct
34 Correct 6 ms 8916 KB Output is correct
35 Correct 5 ms 8916 KB Output is correct
36 Correct 5 ms 8916 KB Output is correct
37 Correct 5 ms 8916 KB Output is correct
38 Correct 6 ms 9044 KB Output is correct
39 Correct 155 ms 16000 KB Output is correct
40 Correct 142 ms 15888 KB Output is correct
41 Correct 158 ms 15904 KB Output is correct
42 Correct 161 ms 15992 KB Output is correct
43 Correct 80 ms 16344 KB Output is correct
44 Correct 57 ms 16100 KB Output is correct
45 Correct 130 ms 19472 KB Output is correct
46 Correct 137 ms 23180 KB Output is correct
47 Correct 178 ms 23188 KB Output is correct
48 Correct 290 ms 37840 KB Output is correct
49 Correct 304 ms 36624 KB Output is correct
50 Correct 178 ms 23172 KB Output is correct
51 Correct 166 ms 23368 KB Output is correct
52 Correct 215 ms 23412 KB Output is correct
53 Correct 247 ms 22160 KB Output is correct
54 Correct 214 ms 23116 KB Output is correct
55 Correct 13 ms 9636 KB Output is correct
56 Correct 19 ms 9508 KB Output is correct
57 Correct 93 ms 16124 KB Output is correct
58 Correct 39 ms 15780 KB Output is correct
59 Correct 101 ms 23064 KB Output is correct
60 Correct 606 ms 36872 KB Output is correct
61 Correct 231 ms 23512 KB Output is correct
62 Correct 334 ms 23360 KB Output is correct
63 Correct 379 ms 23392 KB Output is correct
64 Correct 570 ms 23608 KB Output is correct
65 Correct 246 ms 24200 KB Output is correct
66 Correct 414 ms 34180 KB Output is correct
67 Correct 127 ms 24016 KB Output is correct
68 Correct 290 ms 24112 KB Output is correct
69 Correct 318 ms 24312 KB Output is correct
70 Correct 252 ms 23540 KB Output is correct