oj.uz

Submission #871989

# Submission time Handle Problem Language Result Execution time Memory
871989 2023-11-12T05:48:54 Z Warinchai Race (IOI11_race) C++14
100 / 100
 323 ms 106016 KB 
#include "race.h"
#include<bits/stdc++.h>
using namespace std;
vector<pair<int,int> >adj[200005];
int sz[200005];
int used[200005];
long long cnt[1000005];
int inf=1e9;
long long ans=inf;
vector<pair<int,long long> >v[200005];
int n,k;
int dfssz(int u,int p=-1){
    sz[u]=1;
    for(auto x:adj[u])if(!used[x.first]&&x.first!=p)sz[u]+=dfssz(x.first,u);
    return sz[u];
}
int centroid(int u,int rsz,int p=-1){
    for(auto x:adj[u])if(!used[x.first]&&x.first!=p&&sz[x.first]>rsz/2)return centroid(x.first,rsz,u);
    return u;
}
void dfs1(int u,int d,int l,int rt,int p=-1){
    if(d<=k)v[rt].push_back({d,l});else return;
    for(auto x:adj[u])if(!used[x.first]&&x.first!=p)dfs1(x.first,d+x.second,l+1,rt,u);
}
void decom(int u){
    u=centroid(u,dfssz(u));
    //cerr<<"u:"<<u<<endl;
    used[u]=1;
    for(auto x:adj[u])if(!used[x.first]){
        dfs1(x.first,x.second,1,x.first);
        for(auto d:v[x.first])if(d.first<=k)ans=min(ans,cnt[k-d.first]+d.second);
        for(auto d:v[x.first])if(d.first<=k)cnt[d.first]=min(cnt[d.first],d.second);
    }
    for(auto x:adj[u])if(!used[x.first]){
        for(auto d:v[x.first])if(d.first<=k)cnt[d.first]=inf;
        v[x.first].clear();
    }
    for(auto x:adj[u])if(!used[x.first])decom(x.first);
}
int best_path(int N, int K, int H[][2], int L[])
{
    n=N,k=K;
    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]});
    }
    for(int i=0;i<=K;i++)cnt[i]=inf;
    cnt[0]=0;
    decom(1);
    return ans==inf?-1:ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16732 KB Output is correct
2 Correct 3 ms 16732 KB Output is correct
3 Correct 3 ms 16728 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 3 ms 16476 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 3 ms 16476 KB Output is correct
8 Correct 3 ms 16476 KB Output is correct
9 Correct 3 ms 16568 KB Output is correct
10 Correct 5 ms 16728 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 3 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16684 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16732 KB Output is correct
2 Correct 3 ms 16732 KB Output is correct
3 Correct 3 ms 16728 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 3 ms 16476 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 3 ms 16476 KB Output is correct
8 Correct 3 ms 16476 KB Output is correct
9 Correct 3 ms 16568 KB Output is correct
10 Correct 5 ms 16728 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 3 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16684 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 3 ms 16476 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 6 ms 22860 KB Output is correct
23 Correct 5 ms 20828 KB Output is correct
24 Correct 5 ms 22876 KB Output is correct
25 Correct 5 ms 22876 KB Output is correct
26 Correct 4 ms 18776 KB Output is correct
27 Correct 5 ms 22876 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct
29 Correct 4 ms 18768 KB Output is correct
30 Correct 4 ms 18764 KB Output is correct
31 Correct 5 ms 20824 KB Output is correct
32 Correct 5 ms 20828 KB Output is correct
33 Correct 5 ms 23040 KB Output is correct
34 Correct 4 ms 20828 KB Output is correct
35 Correct 5 ms 22876 KB Output is correct
36 Correct 5 ms 22876 KB Output is correct
37 Correct 5 ms 22872 KB Output is correct
38 Correct 4 ms 20828 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16732 KB Output is correct
2 Correct 3 ms 16732 KB Output is correct
3 Correct 3 ms 16728 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 3 ms 16476 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 3 ms 16476 KB Output is correct
8 Correct 3 ms 16476 KB Output is correct
9 Correct 3 ms 16568 KB Output is correct
10 Correct 5 ms 16728 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 3 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16684 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 103 ms 38744 KB Output is correct
20 Correct 96 ms 38156 KB Output is correct
21 Correct 98 ms 40248 KB Output is correct
22 Correct 94 ms 38344 KB Output is correct
23 Correct 62 ms 29072 KB Output is correct
24 Correct 54 ms 29008 KB Output is correct
25 Correct 104 ms 49748 KB Output is correct
26 Correct 92 ms 58536 KB Output is correct
27 Correct 130 ms 41020 KB Output is correct
28 Correct 202 ms 45532 KB Output is correct
29 Correct 173 ms 41188 KB Output is correct
30 Correct 131 ms 41096 KB Output is correct
31 Correct 135 ms 41328 KB Output is correct
32 Correct 157 ms 39508 KB Output is correct
33 Correct 172 ms 56144 KB Output is correct
34 Correct 150 ms 29264 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16732 KB Output is correct
2 Correct 3 ms 16732 KB Output is correct
3 Correct 3 ms 16728 KB Output is correct
4 Correct 3 ms 16732 KB Output is correct
5 Correct 3 ms 16476 KB Output is correct
6 Correct 3 ms 16732 KB Output is correct
7 Correct 3 ms 16476 KB Output is correct
8 Correct 3 ms 16476 KB Output is correct
9 Correct 3 ms 16568 KB Output is correct
10 Correct 5 ms 16728 KB Output is correct
11 Correct 3 ms 16732 KB Output is correct
12 Correct 3 ms 16732 KB Output is correct
13 Correct 3 ms 16728 KB Output is correct
14 Correct 3 ms 16732 KB Output is correct
15 Correct 3 ms 16732 KB Output is correct
16 Correct 3 ms 16684 KB Output is correct
17 Correct 3 ms 16732 KB Output is correct
18 Correct 3 ms 16732 KB Output is correct
19 Correct 3 ms 16476 KB Output is correct
20 Correct 3 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 6 ms 22860 KB Output is correct
23 Correct 5 ms 20828 KB Output is correct
24 Correct 5 ms 22876 KB Output is correct
25 Correct 5 ms 22876 KB Output is correct
26 Correct 4 ms 18776 KB Output is correct
27 Correct 5 ms 22876 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct
29 Correct 4 ms 18768 KB Output is correct
30 Correct 4 ms 18764 KB Output is correct
31 Correct 5 ms 20824 KB Output is correct
32 Correct 5 ms 20828 KB Output is correct
33 Correct 5 ms 23040 KB Output is correct
34 Correct 4 ms 20828 KB Output is correct
35 Correct 5 ms 22876 KB Output is correct
36 Correct 5 ms 22876 KB Output is correct
37 Correct 5 ms 22872 KB Output is correct
38 Correct 4 ms 20828 KB Output is correct
39 Correct 103 ms 38744 KB Output is correct
40 Correct 96 ms 38156 KB Output is correct
41 Correct 98 ms 40248 KB Output is correct
42 Correct 94 ms 38344 KB Output is correct
43 Correct 62 ms 29072 KB Output is correct
44 Correct 54 ms 29008 KB Output is correct
45 Correct 104 ms 49748 KB Output is correct
46 Correct 92 ms 58536 KB Output is correct
47 Correct 130 ms 41020 KB Output is correct
48 Correct 202 ms 45532 KB Output is correct
49 Correct 173 ms 41188 KB Output is correct
50 Correct 131 ms 41096 KB Output is correct
51 Correct 135 ms 41328 KB Output is correct
52 Correct 157 ms 39508 KB Output is correct
53 Correct 172 ms 56144 KB Output is correct
54 Correct 150 ms 29264 KB Output is correct
55 Correct 9 ms 18264 KB Output is correct
56 Correct 11 ms 18640 KB Output is correct
57 Correct 76 ms 48292 KB Output is correct
58 Correct 32 ms 27080 KB Output is correct
59 Correct 92 ms 58592 KB Output is correct
60 Correct 323 ms 106016 KB Output is correct
61 Correct 137 ms 47652 KB Output is correct
62 Correct 155 ms 58704 KB Output is correct
63 Correct 198 ms 58708 KB Output is correct
64 Correct 318 ms 73660 KB Output is correct
65 Correct 128 ms 30284 KB Output is correct
66 Correct 311 ms 89844 KB Output is correct
67 Correct 101 ms 42552 KB Output is correct
68 Correct 204 ms 54996 KB Output is correct
69 Correct 217 ms 54940 KB Output is correct
70 Correct 193 ms 53328 KB Output is correct