oj.uz

Submission #726964

# Submission time Handle Problem Language Result Execution time Memory
726964 2023-04-19T17:38:45 Z grogu Cat in a tree (BOI17_catinatree) C++14
100 / 100
 162 ms 29224 KB 
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include <bits/stdc++.h>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define all(a) a.begin(),a.end()
using namespace std;

#define maxn 200005
ll n,d;
vector<ll> g[maxn];
pll dfs(ll u,ll p){
    vector<ll> v; v.pb(0);
    ll cnt = 1;
    for(ll s : g[u]){
        if(s==p) continue;
        pll cur = dfs(s,u);
        v.pb(cur.sc);
        cnt+=cur.fi;
    }
    sort(all(v));
    reverse(all(v));
    while(v.size()>1&&v[v.size()-1] + v[v.size()-2]<d){
        v.popb(); cnt--;
    }
    return {cnt,v.back()+1};
}
void tc(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
    cin >> n >> d;
    for(ll i = 2;i<=n;i++){
        ll x; cin >> x;
        x++;
        g[x].pb(i);
        g[i].pb(x);
    }
    pll ans = dfs(1,1);
    cout<<ans.fi<<endl;
}

int main(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
	int t; t = 1;
	while(t--){
		tc();
	}
	return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5020 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 5020 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 5016 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5020 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 5020 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 5016 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5276 KB Output is correct
22 Correct 3 ms 5020 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 4 ms 5016 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 5012 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 3 ms 5076 KB Output is correct
30 Correct 3 ms 5020 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 4 ms 5016 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5280 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5020 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 5020 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 3 ms 5016 KB Output is correct
11 Correct 3 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5276 KB Output is correct
22 Correct 3 ms 5020 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 4 ms 5016 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 5012 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 3 ms 5076 KB Output is correct
30 Correct 3 ms 5020 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 4 ms 5016 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5280 KB Output is correct
41 Correct 53 ms 13508 KB Output is correct
42 Correct 36 ms 9268 KB Output is correct
43 Correct 35 ms 9296 KB Output is correct
44 Correct 39 ms 9288 KB Output is correct
45 Correct 32 ms 9216 KB Output is correct
46 Correct 137 ms 13644 KB Output is correct
47 Correct 102 ms 13552 KB Output is correct
48 Correct 89 ms 13652 KB Output is correct
49 Correct 162 ms 13636 KB Output is correct
50 Correct 47 ms 9524 KB Output is correct
51 Correct 29 ms 9544 KB Output is correct
52 Correct 34 ms 9544 KB Output is correct
53 Correct 80 ms 13976 KB Output is correct
54 Correct 64 ms 14036 KB Output is correct
55 Correct 63 ms 14104 KB Output is correct
56 Correct 3 ms 5156 KB Output is correct
57 Correct 9 ms 8916 KB Output is correct
58 Correct 36 ms 22868 KB Output is correct
59 Correct 96 ms 29224 KB Output is correct
60 Correct 63 ms 13480 KB Output is correct
61 Correct 69 ms 12936 KB Output is correct