oj.uz

Submission #762080

# Submission time Handle Problem Language Result Execution time Memory
762080 2023-06-20T18:23:26 Z LucaGreg Cat in a tree (BOI17_catinatree) C++17
100 / 100
 96 ms 41464 KB 
 
#include <bits/stdc++.h>
 
using namespace std;
 
#define pb push_back
#define ff first
#define ss second
//#define int long long int
 
const int INF = 2000000000;
const int mod = 1000000007;
 
vector<int> adj[200010];
int nivel[200010];
multiset<pair<int, int> > markeds[200010];
int n, d;
 
pair<int, int> dfs(int cur, int pai){
    nivel[cur] = nivel[pai] + 1;
    int sumMarked = 0;
    int qtdViz = 0;
    for(int i=0;i<(int)adj[cur].size();i++){
        int viz = adj[cur][i];
        if(viz==pai) continue;
        qtdViz++;
        pair<int, int> aux = dfs(viz, cur);
        sumMarked += aux.ss;
        markeds[cur].insert(aux);
    }
    /*cout<<cur<<" ";
    for(auto it=markeds[cur].begin();it!=markeds[cur].end();it++){
        cout<<(*it).ff<<" "<<(*it).ss<<" ";
    }
    cout<<"\n";*/
    if(qtdViz==0) return {nivel[cur], 1};
    if(((*markeds[cur].begin()).ff - nivel[cur])>=d) return {nivel[cur], sumMarked + 1};
    int lostMarked = 0;
    int minNivel = INF;
    for(auto it=markeds[cur].begin();it!=markeds[cur].end();it++){
        it++;
        auto proxIt = it;
        it--;
        if(proxIt==markeds[cur].end()){
            minNivel = (*it).ff;
            break;
        }
        if(((*it).ff + (*proxIt).ff - (2 * nivel[cur]))>=d){
            minNivel = (*it).ff;
            break;
        }else{
            lostMarked++;
        }
    }
    int qtdMarked = sumMarked - lostMarked;
    if((minNivel - nivel[cur])>=d){
        minNivel = nivel[cur];
        qtdMarked++;
    }
    return {minNivel, qtdMarked};
}
 
main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(0);
    cin>>n>>d;
    for(int i=1;i<n;i++){
        int xi; cin>>xi;
        adj[xi].pb(i);
        adj[i].pb(xi);
    }
    cout<<dfs(0, 0).ss<<"\n";
    
    return 0;
}

Compilation message

catinatree.cpp:63:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   63 | main()
      | ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14320 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 6 ms 14424 KB Output is correct
7 Correct 6 ms 14416 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 6 ms 14416 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14292 KB Output is correct
12 Correct 6 ms 14424 KB Output is correct
13 Correct 7 ms 14420 KB Output is correct
14 Correct 6 ms 14416 KB Output is correct
15 Correct 7 ms 14292 KB Output is correct
16 Correct 6 ms 14424 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 8 ms 14412 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14320 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 6 ms 14424 KB Output is correct
7 Correct 6 ms 14416 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 6 ms 14416 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14292 KB Output is correct
12 Correct 6 ms 14424 KB Output is correct
13 Correct 7 ms 14420 KB Output is correct
14 Correct 6 ms 14416 KB Output is correct
15 Correct 7 ms 14292 KB Output is correct
16 Correct 6 ms 14424 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 8 ms 14412 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 6 ms 14676 KB Output is correct
22 Correct 7 ms 14392 KB Output is correct
23 Correct 6 ms 14420 KB Output is correct
24 Correct 7 ms 14412 KB Output is correct
25 Correct 7 ms 14420 KB Output is correct
26 Correct 7 ms 14416 KB Output is correct
27 Correct 7 ms 14420 KB Output is correct
28 Correct 7 ms 14556 KB Output is correct
29 Correct 7 ms 14548 KB Output is correct
30 Correct 7 ms 14500 KB Output is correct
31 Correct 7 ms 14548 KB Output is correct
32 Correct 7 ms 14544 KB Output is correct
33 Correct 8 ms 14548 KB Output is correct
34 Correct 7 ms 14548 KB Output is correct
35 Correct 8 ms 14496 KB Output is correct
36 Correct 8 ms 14548 KB Output is correct
37 Correct 7 ms 14548 KB Output is correct
38 Correct 7 ms 14548 KB Output is correct
39 Correct 7 ms 14548 KB Output is correct
40 Correct 8 ms 14652 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14320 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 6 ms 14424 KB Output is correct
7 Correct 6 ms 14416 KB Output is correct
8 Correct 7 ms 14412 KB Output is correct
9 Correct 6 ms 14416 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 6 ms 14292 KB Output is correct
12 Correct 6 ms 14424 KB Output is correct
13 Correct 7 ms 14420 KB Output is correct
14 Correct 6 ms 14416 KB Output is correct
15 Correct 7 ms 14292 KB Output is correct
16 Correct 6 ms 14424 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 8 ms 14412 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 6 ms 14676 KB Output is correct
22 Correct 7 ms 14392 KB Output is correct
23 Correct 6 ms 14420 KB Output is correct
24 Correct 7 ms 14412 KB Output is correct
25 Correct 7 ms 14420 KB Output is correct
26 Correct 7 ms 14416 KB Output is correct
27 Correct 7 ms 14420 KB Output is correct
28 Correct 7 ms 14556 KB Output is correct
29 Correct 7 ms 14548 KB Output is correct
30 Correct 7 ms 14500 KB Output is correct
31 Correct 7 ms 14548 KB Output is correct
32 Correct 7 ms 14544 KB Output is correct
33 Correct 8 ms 14548 KB Output is correct
34 Correct 7 ms 14548 KB Output is correct
35 Correct 8 ms 14496 KB Output is correct
36 Correct 8 ms 14548 KB Output is correct
37 Correct 7 ms 14548 KB Output is correct
38 Correct 7 ms 14548 KB Output is correct
39 Correct 7 ms 14548 KB Output is correct
40 Correct 8 ms 14652 KB Output is correct
41 Correct 53 ms 31064 KB Output is correct
42 Correct 36 ms 23208 KB Output is correct
43 Correct 44 ms 23252 KB Output is correct
44 Correct 38 ms 23264 KB Output is correct
45 Correct 38 ms 23224 KB Output is correct
46 Correct 80 ms 32204 KB Output is correct
47 Correct 96 ms 32152 KB Output is correct
48 Correct 86 ms 32132 KB Output is correct
49 Correct 86 ms 32204 KB Output is correct
50 Correct 31 ms 23536 KB Output is correct
51 Correct 33 ms 23440 KB Output is correct
52 Correct 42 ms 23456 KB Output is correct
53 Correct 65 ms 32544 KB Output is correct
54 Correct 68 ms 32652 KB Output is correct
55 Correct 62 ms 32616 KB Output is correct
56 Correct 7 ms 14676 KB Output is correct
57 Correct 11 ms 18132 KB Output is correct
58 Correct 31 ms 31564 KB Output is correct
59 Correct 65 ms 41464 KB Output is correct
60 Correct 53 ms 31624 KB Output is correct
61 Correct 57 ms 31180 KB Output is correct