oj.uz

Submission #719661

# Submission time Handle Problem Language Result Execution time Memory
719661 2023-04-06T13:04:18 Z guagua0407 Race (IOI11_race) C++17
100 / 100
 480 ms 115012 KB 
#include<bits/stdc++.h>
#include "race.h"
using namespace std;
#define ll long long
#define f first
#define s second
#define all(x) x,begin(),x.end()

const int mxn=2e5+5;
vector<pair<int,ll>> adj[mxn];
int depth[mxn];
ll len[mxn];
multiset<pair<ll,int>> S[mxn];
int ans=1e9;
ll k;

void dfs(int v,int p,int w=0){
    depth[v]=depth[p]+1;
    len[v]=len[p]+w;
    S[v].insert({len[v],depth[v]});
    for(auto u:adj[v]){
        if(u.f==p) continue;
        dfs(u.f,v,u.s);
        if(S[v].size()<S[u.f].size()){
            S[v].swap(S[u.f]);
        }
        for(auto &i:S[u.f]){
            ll target=k-i.f+2*len[v];
            auto it=S[v].lower_bound({target,0});
            if(it!=S[v].end() and (*it).f==target){
                ans=min(ans,i.s+(*it).s-2*depth[v]);
            }
        }
        for(auto &i:S[u.f]){
            S[v].insert(i);
        }
    }
}

int best_path(int N, int K, int H[][2], int L[])
{
    k=K;
    for(int i=0;i<N-1;i++){
        int a=H[i][0];
        int b=H[i][1];
        int w=L[i];
        adj[a].push_back({b,w});
        adj[b].push_back({a,w});
    }
    dfs(0,0);
    return (ans==1e9?-1:ans);
}

/*int main(){
    int n,k;
    cin>>n>>k;
    int H[n-1][2];
    int L[n-1];
    for(int i=0;i<n-1;i++){
        cin>>H[i][0]>>H[i][1];
    }
    for(int i=0;i<n-1;i++){
        cin>>L[i];
    }
    cout<<best_path(n,k,H,L);
}*/

/*
11 12
0 1
0 2
2 3
3 4
4 5
0 6
6 7
6 8
8 9
8 10
3
4
5
4
6
3
2
5
6
7
*/

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14448 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 9 ms 14420 KB Output is correct
7 Correct 10 ms 14440 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 9 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 8 ms 14368 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 9 ms 14420 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14448 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 9 ms 14420 KB Output is correct
7 Correct 10 ms 14440 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 9 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 8 ms 14368 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 9 ms 14420 KB Output is correct
19 Correct 9 ms 14420 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 9 ms 14676 KB Output is correct
22 Correct 9 ms 14676 KB Output is correct
23 Correct 13 ms 14660 KB Output is correct
24 Correct 8 ms 14724 KB Output is correct
25 Correct 8 ms 14720 KB Output is correct
26 Correct 8 ms 14676 KB Output is correct
27 Correct 11 ms 14676 KB Output is correct
28 Correct 8 ms 14676 KB Output is correct
29 Correct 8 ms 14676 KB Output is correct
30 Correct 8 ms 14676 KB Output is correct
31 Correct 8 ms 14676 KB Output is correct
32 Correct 11 ms 14676 KB Output is correct
33 Correct 8 ms 14676 KB Output is correct
34 Correct 10 ms 14548 KB Output is correct
35 Correct 10 ms 14604 KB Output is correct
36 Correct 8 ms 14660 KB Output is correct
37 Correct 11 ms 14588 KB Output is correct
38 Correct 9 ms 14676 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14448 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 9 ms 14420 KB Output is correct
7 Correct 10 ms 14440 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 9 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 8 ms 14368 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 9 ms 14420 KB Output is correct
19 Correct 240 ms 62624 KB Output is correct
20 Correct 227 ms 61852 KB Output is correct
21 Correct 210 ms 62208 KB Output is correct
22 Correct 201 ms 57012 KB Output is correct
23 Correct 275 ms 74244 KB Output is correct
24 Correct 195 ms 58124 KB Output is correct
25 Correct 145 ms 43428 KB Output is correct
26 Correct 83 ms 46496 KB Output is correct
27 Correct 335 ms 67236 KB Output is correct
28 Correct 320 ms 81672 KB Output is correct
29 Correct 312 ms 80604 KB Output is correct
30 Correct 294 ms 69924 KB Output is correct
31 Correct 312 ms 69968 KB Output is correct
32 Correct 388 ms 70100 KB Output is correct
33 Correct 377 ms 90468 KB Output is correct
34 Correct 334 ms 89356 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14448 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 9 ms 14420 KB Output is correct
7 Correct 10 ms 14440 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 9 ms 14420 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 8 ms 14368 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 9 ms 14420 KB Output is correct
19 Correct 9 ms 14420 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 9 ms 14676 KB Output is correct
22 Correct 9 ms 14676 KB Output is correct
23 Correct 13 ms 14660 KB Output is correct
24 Correct 8 ms 14724 KB Output is correct
25 Correct 8 ms 14720 KB Output is correct
26 Correct 8 ms 14676 KB Output is correct
27 Correct 11 ms 14676 KB Output is correct
28 Correct 8 ms 14676 KB Output is correct
29 Correct 8 ms 14676 KB Output is correct
30 Correct 8 ms 14676 KB Output is correct
31 Correct 8 ms 14676 KB Output is correct
32 Correct 11 ms 14676 KB Output is correct
33 Correct 8 ms 14676 KB Output is correct
34 Correct 10 ms 14548 KB Output is correct
35 Correct 10 ms 14604 KB Output is correct
36 Correct 8 ms 14660 KB Output is correct
37 Correct 11 ms 14588 KB Output is correct
38 Correct 9 ms 14676 KB Output is correct
39 Correct 240 ms 62624 KB Output is correct
40 Correct 227 ms 61852 KB Output is correct
41 Correct 210 ms 62208 KB Output is correct
42 Correct 201 ms 57012 KB Output is correct
43 Correct 275 ms 74244 KB Output is correct
44 Correct 195 ms 58124 KB Output is correct
45 Correct 145 ms 43428 KB Output is correct
46 Correct 83 ms 46496 KB Output is correct
47 Correct 335 ms 67236 KB Output is correct
48 Correct 320 ms 81672 KB Output is correct
49 Correct 312 ms 80604 KB Output is correct
50 Correct 294 ms 69924 KB Output is correct
51 Correct 312 ms 69968 KB Output is correct
52 Correct 388 ms 70100 KB Output is correct
53 Correct 377 ms 90468 KB Output is correct
54 Correct 334 ms 89356 KB Output is correct
55 Correct 21 ms 18048 KB Output is correct
56 Correct 30 ms 18520 KB Output is correct
57 Correct 221 ms 77628 KB Output is correct
58 Correct 88 ms 34952 KB Output is correct
59 Correct 80 ms 47844 KB Output is correct
60 Correct 275 ms 80852 KB Output is correct
61 Correct 312 ms 70148 KB Output is correct
62 Correct 264 ms 69968 KB Output is correct
63 Correct 372 ms 70076 KB Output is correct
64 Correct 474 ms 115012 KB Output is correct
65 Correct 480 ms 104968 KB Output is correct
66 Correct 307 ms 78728 KB Output is correct
67 Correct 300 ms 57092 KB Output is correct
68 Correct 396 ms 69964 KB Output is correct
69 Correct 398 ms 75376 KB Output is correct
70 Correct 354 ms 67476 KB Output is correct