oj.uz

Submission #556224

# Submission time Handle Problem Language Result Execution time Memory
556224 2022-05-02T15:30:31 Z Dan4Life Race (IOI11_race) C++17
100 / 100
 672 ms 56868 KB 
#include "race.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
const int maxn = 200010;

int answ, KK, cnt[1000010], subtree[maxn], timer=-1, a[1000010];
set<pair<int,int>> adj[maxn];

void dfs(int s, int p){
    subtree[s]=1;
    for(auto x : adj[s]){
        int u = x.first;
        if(u==p) continue;
        dfs(u,s), subtree[s]+=subtree[u];
    }
}

void dfs2(int s, int p, int dep, int weight, bool ok){
    if(weight>KK) return;
    for(auto u : adj[s])
        if(u.first!=p)
            dfs2(u.first,s,dep+1,weight+u.second, ok);
    int D = KK-weight;
    if(!ok){
        if(D and a[D]<timer) cnt[D] = cnt[KK+1], a[D]=timer;
        answ = min(answ, dep+cnt[D]);
    }
    else{
        if(a[weight]<timer) cnt[weight] = cnt[KK+1];
        a[weight]=timer; cnt[weight] = min(cnt[weight], dep);
    }
}

int find_centroid(int s, int p, int sz){
    for(auto u : adj[s])
        if(u.first!=p and subtree[u.first]>sz/2)
            return find_centroid(u.first, s, sz);
    return s;
}

void centroid_decomp(int s, int p){
    dfs(s,-1); int sz = subtree[s];
    int centroid = find_centroid(s,-1,sz);
    timer++;
    for(auto w : adj[centroid]){
        int u = w.first; if(u==p) continue;
        dfs2(u,centroid,1,w.second,0), dfs2(u,centroid,1,w.second,1);
    }
    while(!adj[centroid].empty()){
        int x = adj[centroid].begin()->first;
        adj[x].erase(adj[x].lower_bound({centroid,-1}));
        adj[centroid].erase(adj[centroid].begin());
        centroid_decomp(x,centroid);
    }
}

int best_path(int N, int K, int H[][2], int L[])
{
    answ = N+1; KK = K; cnt[0]=0;
    for(int i = 1; i <= K+1; i++) cnt[i]=N+1;
    for(int i = 0; i < N-1; i++)
        adj[++H[i][0]].insert({++H[i][1],L[i]}),
        adj[H[i][1]].insert({H[i][0],L[i]});
    centroid_decomp(1,-1);
    return (answ==N+1?-1:answ);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9712 KB Output is correct
10 Correct 6 ms 9708 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 6 ms 9716 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9708 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9712 KB Output is correct
10 Correct 6 ms 9708 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 6 ms 9716 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9708 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9712 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 6 ms 9812 KB Output is correct
22 Correct 10 ms 16724 KB Output is correct
23 Correct 9 ms 15444 KB Output is correct
24 Correct 11 ms 16512 KB Output is correct
25 Correct 10 ms 16156 KB Output is correct
26 Correct 8 ms 12372 KB Output is correct
27 Correct 8 ms 12884 KB Output is correct
28 Correct 7 ms 11348 KB Output is correct
29 Correct 8 ms 12280 KB Output is correct
30 Correct 8 ms 12628 KB Output is correct
31 Correct 9 ms 14840 KB Output is correct
32 Correct 10 ms 15292 KB Output is correct
33 Correct 10 ms 15916 KB Output is correct
34 Correct 9 ms 14456 KB Output is correct
35 Correct 10 ms 16096 KB Output is correct
36 Correct 10 ms 17088 KB Output is correct
37 Correct 10 ms 15956 KB Output is correct
38 Correct 10 ms 13688 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9712 KB Output is correct
10 Correct 6 ms 9708 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 6 ms 9716 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9708 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 188 ms 20716 KB Output is correct
20 Correct 184 ms 20680 KB Output is correct
21 Correct 211 ms 20748 KB Output is correct
22 Correct 206 ms 20812 KB Output is correct
23 Correct 107 ms 20800 KB Output is correct
24 Correct 89 ms 20800 KB Output is correct
25 Correct 181 ms 24924 KB Output is correct
26 Correct 132 ms 28676 KB Output is correct
27 Correct 280 ms 31648 KB Output is correct
28 Correct 383 ms 47324 KB Output is correct
29 Correct 354 ms 46208 KB Output is correct
30 Correct 264 ms 31668 KB Output is correct
31 Correct 263 ms 31852 KB Output is correct
32 Correct 315 ms 31564 KB Output is correct
33 Correct 307 ms 31752 KB Output is correct
34 Correct 258 ms 31900 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9712 KB Output is correct
10 Correct 6 ms 9708 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 6 ms 9716 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9708 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9712 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 6 ms 9812 KB Output is correct
22 Correct 10 ms 16724 KB Output is correct
23 Correct 9 ms 15444 KB Output is correct
24 Correct 11 ms 16512 KB Output is correct
25 Correct 10 ms 16156 KB Output is correct
26 Correct 8 ms 12372 KB Output is correct
27 Correct 8 ms 12884 KB Output is correct
28 Correct 7 ms 11348 KB Output is correct
29 Correct 8 ms 12280 KB Output is correct
30 Correct 8 ms 12628 KB Output is correct
31 Correct 9 ms 14840 KB Output is correct
32 Correct 10 ms 15292 KB Output is correct
33 Correct 10 ms 15916 KB Output is correct
34 Correct 9 ms 14456 KB Output is correct
35 Correct 10 ms 16096 KB Output is correct
36 Correct 10 ms 17088 KB Output is correct
37 Correct 10 ms 15956 KB Output is correct
38 Correct 10 ms 13688 KB Output is correct
39 Correct 188 ms 20716 KB Output is correct
40 Correct 184 ms 20680 KB Output is correct
41 Correct 211 ms 20748 KB Output is correct
42 Correct 206 ms 20812 KB Output is correct
43 Correct 107 ms 20800 KB Output is correct
44 Correct 89 ms 20800 KB Output is correct
45 Correct 181 ms 24924 KB Output is correct
46 Correct 132 ms 28676 KB Output is correct
47 Correct 280 ms 31648 KB Output is correct
48 Correct 383 ms 47324 KB Output is correct
49 Correct 354 ms 46208 KB Output is correct
50 Correct 264 ms 31668 KB Output is correct
51 Correct 263 ms 31852 KB Output is correct
52 Correct 315 ms 31564 KB Output is correct
53 Correct 307 ms 31752 KB Output is correct
54 Correct 258 ms 31900 KB Output is correct
55 Correct 16 ms 10964 KB Output is correct
56 Correct 17 ms 10944 KB Output is correct
57 Correct 106 ms 20808 KB Output is correct
58 Correct 69 ms 20844 KB Output is correct
59 Correct 123 ms 29936 KB Output is correct
60 Correct 672 ms 56868 KB Output is correct
61 Correct 273 ms 34632 KB Output is correct
62 Correct 294 ms 38448 KB Output is correct
63 Correct 387 ms 38604 KB Output is correct
64 Correct 660 ms 39048 KB Output is correct
65 Correct 311 ms 35412 KB Output is correct
66 Correct 532 ms 54632 KB Output is correct
67 Correct 309 ms 38900 KB Output is correct
68 Correct 411 ms 41348 KB Output is correct
69 Correct 410 ms 41748 KB Output is correct
70 Correct 394 ms 40172 KB Output is correct