oj.uz

Submission #883814

# Submission time Handle Problem Language Result Execution time Memory
883814 2023-12-06T06:27:35 Z imarn Cat in a tree (BOI17_catinatree) C++14
100 / 100
 267 ms 249816 KB 
#include<bits/stdc++.h>
#define pii pair<long long,int>
#define f first
#define pb push_back
#define s second
using namespace std;
const int N=2e5+5;
vector<int>g[N];
deque<int>dq[N];
int ans=0;
int k;
void dfs(int u=0,int p=0){
    dq[u].pb(1);
    for(auto v:g[u]){
        if(v==p)continue;
        dfs(v,u);dq[v].push_front(dq[v].front());
        if(dq[v].size()>dq[u].size())swap(dq[u],dq[v]);
        deque<int>x;
        for(int i=0;i<dq[v].size();i++){
            int a=max(k-i,i);x.pb(dq[v][i]);
            if(a<dq[u].size())x[i]=max(x[i],dq[v][i]+dq[u][a]);
            if(a<dq[v].size())x[i]=max(x[i],dq[v][a]+dq[u][i]);
        }int mx=0;
        for(int i=(int)dq[v].size()-1;i>=0;i--){
            mx=max(mx,x[i]);
            dq[u][i] = max(dq[u][i],mx);
        }
    }
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n>>k;
    for(int i=1,u;i<=n-1;i++)cin>>u,g[u].pb(i),g[i].pb(u);
    dfs();cout<<dq[0].front();
}

Compilation message

catinatree.cpp: In function 'void dfs(int, int)':
catinatree.cpp:19:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |         for(int i=0;i<dq[v].size();i++){
      |                     ~^~~~~~~~~~~~~
catinatree.cpp:21:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |             if(a<dq[u].size())x[i]=max(x[i],dq[v][i]+dq[u][a]);
      |                ~^~~~~~~~~~~~~
catinatree.cpp:22:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |             if(a<dq[v].size())x[i]=max(x[i],dq[v][a]+dq[u][i]);
      |                ~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 139768 KB Output is correct
2 Correct 64 ms 139592 KB Output is correct
3 Correct 66 ms 139604 KB Output is correct
4 Correct 63 ms 139604 KB Output is correct
5 Correct 64 ms 139704 KB Output is correct
6 Correct 62 ms 139600 KB Output is correct
7 Correct 64 ms 139712 KB Output is correct
8 Correct 63 ms 139604 KB Output is correct
9 Correct 63 ms 139604 KB Output is correct
10 Correct 68 ms 139860 KB Output is correct
11 Correct 65 ms 139604 KB Output is correct
12 Correct 63 ms 139604 KB Output is correct
13 Correct 63 ms 139604 KB Output is correct
14 Correct 65 ms 139740 KB Output is correct
15 Correct 63 ms 139604 KB Output is correct
16 Correct 64 ms 139520 KB Output is correct
17 Correct 67 ms 139652 KB Output is correct
18 Correct 65 ms 139596 KB Output is correct
19 Correct 63 ms 139604 KB Output is correct
20 Correct 63 ms 139600 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 139768 KB Output is correct
2 Correct 64 ms 139592 KB Output is correct
3 Correct 66 ms 139604 KB Output is correct
4 Correct 63 ms 139604 KB Output is correct
5 Correct 64 ms 139704 KB Output is correct
6 Correct 62 ms 139600 KB Output is correct
7 Correct 64 ms 139712 KB Output is correct
8 Correct 63 ms 139604 KB Output is correct
9 Correct 63 ms 139604 KB Output is correct
10 Correct 68 ms 139860 KB Output is correct
11 Correct 65 ms 139604 KB Output is correct
12 Correct 63 ms 139604 KB Output is correct
13 Correct 63 ms 139604 KB Output is correct
14 Correct 65 ms 139740 KB Output is correct
15 Correct 63 ms 139604 KB Output is correct
16 Correct 64 ms 139520 KB Output is correct
17 Correct 67 ms 139652 KB Output is correct
18 Correct 65 ms 139596 KB Output is correct
19 Correct 63 ms 139604 KB Output is correct
20 Correct 63 ms 139600 KB Output is correct
21 Correct 63 ms 140112 KB Output is correct
22 Correct 86 ms 139856 KB Output is correct
23 Correct 71 ms 139920 KB Output is correct
24 Correct 74 ms 139860 KB Output is correct
25 Correct 75 ms 139860 KB Output is correct
26 Correct 73 ms 139880 KB Output is correct
27 Correct 68 ms 139824 KB Output is correct
28 Correct 72 ms 140116 KB Output is correct
29 Correct 70 ms 139940 KB Output is correct
30 Correct 70 ms 140164 KB Output is correct
31 Correct 77 ms 140216 KB Output is correct
32 Correct 71 ms 140580 KB Output is correct
33 Correct 89 ms 140544 KB Output is correct
34 Correct 70 ms 140404 KB Output is correct
35 Correct 70 ms 140312 KB Output is correct
36 Correct 70 ms 140532 KB Output is correct
37 Correct 73 ms 140568 KB Output is correct
38 Correct 70 ms 140300 KB Output is correct
39 Correct 74 ms 140368 KB Output is correct
40 Correct 64 ms 140144 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 139768 KB Output is correct
2 Correct 64 ms 139592 KB Output is correct
3 Correct 66 ms 139604 KB Output is correct
4 Correct 63 ms 139604 KB Output is correct
5 Correct 64 ms 139704 KB Output is correct
6 Correct 62 ms 139600 KB Output is correct
7 Correct 64 ms 139712 KB Output is correct
8 Correct 63 ms 139604 KB Output is correct
9 Correct 63 ms 139604 KB Output is correct
10 Correct 68 ms 139860 KB Output is correct
11 Correct 65 ms 139604 KB Output is correct
12 Correct 63 ms 139604 KB Output is correct
13 Correct 63 ms 139604 KB Output is correct
14 Correct 65 ms 139740 KB Output is correct
15 Correct 63 ms 139604 KB Output is correct
16 Correct 64 ms 139520 KB Output is correct
17 Correct 67 ms 139652 KB Output is correct
18 Correct 65 ms 139596 KB Output is correct
19 Correct 63 ms 139604 KB Output is correct
20 Correct 63 ms 139600 KB Output is correct
21 Correct 63 ms 140112 KB Output is correct
22 Correct 86 ms 139856 KB Output is correct
23 Correct 71 ms 139920 KB Output is correct
24 Correct 74 ms 139860 KB Output is correct
25 Correct 75 ms 139860 KB Output is correct
26 Correct 73 ms 139880 KB Output is correct
27 Correct 68 ms 139824 KB Output is correct
28 Correct 72 ms 140116 KB Output is correct
29 Correct 70 ms 139940 KB Output is correct
30 Correct 70 ms 140164 KB Output is correct
31 Correct 77 ms 140216 KB Output is correct
32 Correct 71 ms 140580 KB Output is correct
33 Correct 89 ms 140544 KB Output is correct
34 Correct 70 ms 140404 KB Output is correct
35 Correct 70 ms 140312 KB Output is correct
36 Correct 70 ms 140532 KB Output is correct
37 Correct 73 ms 140568 KB Output is correct
38 Correct 70 ms 140300 KB Output is correct
39 Correct 74 ms 140368 KB Output is correct
40 Correct 64 ms 140144 KB Output is correct
41 Correct 173 ms 184740 KB Output is correct
42 Correct 150 ms 168856 KB Output is correct
43 Correct 153 ms 168788 KB Output is correct
44 Correct 154 ms 168784 KB Output is correct
45 Correct 159 ms 168812 KB Output is correct
46 Correct 254 ms 197996 KB Output is correct
47 Correct 267 ms 197792 KB Output is correct
48 Correct 255 ms 197720 KB Output is correct
49 Correct 253 ms 197968 KB Output is correct
50 Correct 144 ms 194388 KB Output is correct
51 Correct 144 ms 194388 KB Output is correct
52 Correct 162 ms 194388 KB Output is correct
53 Correct 237 ms 249816 KB Output is correct
54 Correct 235 ms 249680 KB Output is correct
55 Correct 231 ms 249680 KB Output is correct
56 Correct 71 ms 140716 KB Output is correct
57 Correct 78 ms 145504 KB Output is correct
58 Correct 109 ms 168016 KB Output is correct
59 Correct 228 ms 219988 KB Output is correct
60 Correct 167 ms 179232 KB Output is correct
61 Correct 173 ms 178484 KB Output is correct