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Submission #1063813

# Submission time Handle Problem Language Result Execution time Memory
1063813 2024-08-18T03:37:25 Z imarn Cat Exercise (JOI23_ho_t4) C++14
100 / 100
 128 ms 41136 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define ll long long
#define pii pair<ll,ll>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vl vector<ll>
#define vvi vector<vi>
using namespace std;
const int mxn=2e5+5;
vector<int>g[mxn];
int pr[mxn]{0},h[mxn]{0},up[mxn][20]{0},d[mxn]{0};
void dfs(int u,int p){
    up[u][0]=p;
    for(int i=1;i<20;i++)up[u][i]=up[up[u][i-1]][i-1];
    for(auto v:g[u]){
        if(v==p)continue;
        d[v]=d[u]+1;dfs(v,u);
    }
}
int get(int r){
    return pr[r]==r?r:pr[r]=get(pr[r]);
}
int lca(int a,int b){
    if(d[b]<d[a])swap(a,b);
    for(int i=19;i>=0;i--)if(d[b]-(1<<i)>=d[a])b=up[b][i];
    if(a==b)return a;
    for(int i=19;i>=0;i--)if(up[a][i]!=up[b][i])a=up[a][i],b=up[b][i];
    return up[a][0];
}
int cal(int a,int b){
    return d[a]+d[b]-2*d[lca(a,b)];
}
ll dp[mxn]{0};
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n;iota(pr,pr+n+1,0);
    for(int i=1;i<=n;i++)cin>>h[i];
    for(int i=1;i<=n-1;i++){
        int a,b;cin>>a>>b;
        g[h[a]].pb(h[b]);g[h[b]].pb(h[a]);
    }dfs(1,1);
    for(int i=1;i<=n;i++){
        for(auto v:g[i]){
            int vv=get(v);
            if(vv<i){
                dp[i]=max(dp[i],dp[vv]+cal(i,vv));
                pr[vv]=i;
            }
        }
    }cout<<dp[n];
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 5160 KB Output is correct
7 Correct 2 ms 5160 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 5160 KB Output is correct
7 Correct 2 ms 5160 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5160 KB Output is correct
13 Correct 2 ms 5212 KB Output is correct
14 Correct 2 ms 5212 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 2 ms 5212 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 5160 KB Output is correct
7 Correct 2 ms 5160 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5160 KB Output is correct
13 Correct 2 ms 5212 KB Output is correct
14 Correct 2 ms 5212 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 2 ms 5212 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 5980 KB Output is correct
19 Correct 4 ms 5980 KB Output is correct
20 Correct 3 ms 5980 KB Output is correct
21 Correct 4 ms 5980 KB Output is correct
22 Correct 4 ms 5980 KB Output is correct
23 Correct 3 ms 5980 KB Output is correct
24 Correct 3 ms 5980 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 5160 KB Output is correct
7 Correct 2 ms 5160 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5160 KB Output is correct
13 Correct 2 ms 5212 KB Output is correct
14 Correct 2 ms 5212 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 2 ms 5212 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 5980 KB Output is correct
19 Correct 4 ms 5980 KB Output is correct
20 Correct 3 ms 5980 KB Output is correct
21 Correct 4 ms 5980 KB Output is correct
22 Correct 4 ms 5980 KB Output is correct
23 Correct 3 ms 5980 KB Output is correct
24 Correct 3 ms 5980 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 4 ms 5980 KB Output is correct
27 Correct 3 ms 5980 KB Output is correct
28 Correct 3 ms 5980 KB Output is correct
29 Correct 4 ms 5980 KB Output is correct
30 Correct 4 ms 5808 KB Output is correct
31 Correct 4 ms 5724 KB Output is correct
32 Correct 4 ms 5724 KB Output is correct
33 Correct 4 ms 5724 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 5160 KB Output is correct
7 Correct 2 ms 5160 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5160 KB Output is correct
13 Correct 2 ms 5212 KB Output is correct
14 Correct 2 ms 5212 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 2 ms 5212 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 5980 KB Output is correct
19 Correct 4 ms 5980 KB Output is correct
20 Correct 3 ms 5980 KB Output is correct
21 Correct 4 ms 5980 KB Output is correct
22 Correct 4 ms 5980 KB Output is correct
23 Correct 3 ms 5980 KB Output is correct
24 Correct 3 ms 5980 KB Output is correct
25 Correct 110 ms 37892 KB Output is correct
26 Correct 78 ms 41064 KB Output is correct
27 Correct 76 ms 41136 KB Output is correct
28 Correct 122 ms 40788 KB Output is correct
29 Correct 128 ms 37968 KB Output is correct
30 Correct 119 ms 40016 KB Output is correct
31 Correct 113 ms 39508 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 5212 KB Output is correct
3 Correct 94 ms 34392 KB Output is correct
4 Correct 102 ms 34644 KB Output is correct
5 Correct 111 ms 34640 KB Output is correct

Subtask #7
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 5160 KB Output is correct
7 Correct 2 ms 5160 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5160 KB Output is correct
13 Correct 2 ms 5212 KB Output is correct
14 Correct 2 ms 5212 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 2 ms 5212 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 5980 KB Output is correct
19 Correct 4 ms 5980 KB Output is correct
20 Correct 3 ms 5980 KB Output is correct
21 Correct 4 ms 5980 KB Output is correct
22 Correct 4 ms 5980 KB Output is correct
23 Correct 3 ms 5980 KB Output is correct
24 Correct 3 ms 5980 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 4 ms 5980 KB Output is correct
27 Correct 3 ms 5980 KB Output is correct
28 Correct 3 ms 5980 KB Output is correct
29 Correct 4 ms 5980 KB Output is correct
30 Correct 4 ms 5808 KB Output is correct
31 Correct 4 ms 5724 KB Output is correct
32 Correct 4 ms 5724 KB Output is correct
33 Correct 4 ms 5724 KB Output is correct
34 Correct 110 ms 37892 KB Output is correct
35 Correct 78 ms 41064 KB Output is correct
36 Correct 76 ms 41136 KB Output is correct
37 Correct 122 ms 40788 KB Output is correct
38 Correct 128 ms 37968 KB Output is correct
39 Correct 119 ms 40016 KB Output is correct
40 Correct 113 ms 39508 KB Output is correct
41 Correct 2 ms 4956 KB Output is correct
42 Correct 2 ms 5212 KB Output is correct
43 Correct 94 ms 34392 KB Output is correct
44 Correct 102 ms 34644 KB Output is correct
45 Correct 111 ms 34640 KB Output is correct
46 Correct 91 ms 39248 KB Output is correct
47 Correct 91 ms 39248 KB Output is correct
48 Correct 90 ms 39248 KB Output is correct
49 Correct 100 ms 39248 KB Output is correct
50 Correct 118 ms 34644 KB Output is correct
51 Correct 115 ms 34644 KB Output is correct
52 Correct 114 ms 34644 KB Output is correct
53 Correct 112 ms 34644 KB Output is correct