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Submission #1005811

# Submission time Handle Problem Language Result Execution time Memory
1005811 2024-06-23T05:44:12 Z Mardonbekhazratov Race (IOI11_race) C++17
100 / 100
 971 ms 66716 KB 
#include<race.h>
#include<bits/stdc++.h>

using namespace std;

vector<int>subtree;
vector<bool>removed;
vector<vector<pair<int,int>>>v;

int get_size(int node,int parent = -1){
    subtree[node]=1;
    for(auto [x,w]:v[node]){
        if(!removed[x] && x!=parent){
            subtree[node]+=get_size(x,node);
        }
    }
    return subtree[node];
}

int get_centroid(int node, int n, int parent = -1){
    for(auto [x,w]:v[node]){
        if(!removed[x] && x!=parent && subtree[x]*2>n)
            return get_centroid(x,n,node);
    }
    return node;
}

int n,k;
int ans = 1e9;

void get_cnt(int node, map<int,int> &cnt, int dis, bool filling, int depth = 1, int parent = -1){
    if(dis>k) return;

    if(filling) cnt[dis]=dis == k ? depth : (cnt[dis]==0?depth:min(depth,cnt[dis]));
    else ans = min(ans,dis==k ? depth : (cnt[k-dis]==0?(int)1e9:cnt[k-dis])+depth);
    for(auto [x,w]:v[node]){
        if(x!=parent && !removed[x]){
            get_cnt(x,cnt,dis+w,filling,depth+1,node);
        }
    }
}

void build_centroid(int node = 0){
    int centroid = get_centroid(node,get_size(node));

    removed[centroid]=true;

    map<int,int>cnt;
    for(auto [x,w]:v[centroid]){
        if(!removed[x]){
            get_cnt(x,cnt,w,false);
            get_cnt(x,cnt,w,true);
        }
    }

    for(auto [x,w]:v[centroid]){
        if(!removed[x]){
            build_centroid(x);
        }
    }
}


int best_path(int N, int K, int H[][2], int L[])
{
    n=N;
    k=K;
    subtree.resize(n);
    v.resize(n);
    removed.assign(n,false);
    for(int i=0;i<n-1;i++){
        v[H[i][0]].push_back({H[i][1],L[i]});
        v[H[i][1]].push_back({H[i][0],L[i]});
    }
    build_centroid();

    return ans == (int)1e9 ? -1 : ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 1 ms 2504 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 2 ms 2672 KB Output is correct
29 Correct 2 ms 2652 KB Output is correct
30 Correct 2 ms 2652 KB Output is correct
31 Correct 3 ms 2652 KB Output is correct
32 Correct 2 ms 2652 KB Output is correct
33 Correct 3 ms 2652 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 2 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 2 ms 2652 KB Output is correct
38 Correct 2 ms 2652 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 159 ms 11096 KB Output is correct
20 Correct 148 ms 12116 KB Output is correct
21 Correct 162 ms 11860 KB Output is correct
22 Correct 151 ms 12372 KB Output is correct
23 Correct 77 ms 12628 KB Output is correct
24 Correct 58 ms 12584 KB Output is correct
25 Correct 109 ms 15696 KB Output is correct
26 Correct 87 ms 19188 KB Output is correct
27 Correct 168 ms 19260 KB Output is correct
28 Correct 170 ms 33360 KB Output is correct
29 Correct 166 ms 32608 KB Output is correct
30 Correct 149 ms 19804 KB Output is correct
31 Correct 163 ms 19796 KB Output is correct
32 Correct 134 ms 19792 KB Output is correct
33 Correct 191 ms 18520 KB Output is correct
34 Correct 96 ms 18768 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 1 ms 2504 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 2 ms 2672 KB Output is correct
29 Correct 2 ms 2652 KB Output is correct
30 Correct 2 ms 2652 KB Output is correct
31 Correct 3 ms 2652 KB Output is correct
32 Correct 2 ms 2652 KB Output is correct
33 Correct 3 ms 2652 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 2 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 2 ms 2652 KB Output is correct
38 Correct 2 ms 2652 KB Output is correct
39 Correct 159 ms 11096 KB Output is correct
40 Correct 148 ms 12116 KB Output is correct
41 Correct 162 ms 11860 KB Output is correct
42 Correct 151 ms 12372 KB Output is correct
43 Correct 77 ms 12628 KB Output is correct
44 Correct 58 ms 12584 KB Output is correct
45 Correct 109 ms 15696 KB Output is correct
46 Correct 87 ms 19188 KB Output is correct
47 Correct 168 ms 19260 KB Output is correct
48 Correct 170 ms 33360 KB Output is correct
49 Correct 166 ms 32608 KB Output is correct
50 Correct 149 ms 19804 KB Output is correct
51 Correct 163 ms 19796 KB Output is correct
52 Correct 134 ms 19792 KB Output is correct
53 Correct 191 ms 18520 KB Output is correct
54 Correct 96 ms 18768 KB Output is correct
55 Correct 19 ms 3676 KB Output is correct
56 Correct 12 ms 3164 KB Output is correct
57 Correct 124 ms 11588 KB Output is correct
58 Correct 29 ms 12220 KB Output is correct
59 Correct 316 ms 32852 KB Output is correct
60 Correct 815 ms 66716 KB Output is correct
61 Correct 213 ms 19404 KB Output is correct
62 Correct 235 ms 20048 KB Output is correct
63 Correct 267 ms 20240 KB Output is correct
64 Correct 971 ms 40592 KB Output is correct
65 Correct 95 ms 20308 KB Output is correct
66 Correct 527 ms 31012 KB Output is correct
67 Correct 81 ms 21128 KB Output is correct
68 Correct 328 ms 33616 KB Output is correct
69 Correct 361 ms 31824 KB Output is correct
70 Correct 296 ms 32848 KB Output is correct