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Submission #847812

# Submission time Handle Problem Language Result Execution time Memory
847812 2023-09-10T13:10:10 Z 8pete8 Cat Exercise (JOI23_ho_t4) C++17
100 / 100
 212 ms 88760 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<algorithm>
#include<limits.h>
#include<cmath>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define pll pair<ll,ll>
#define pb push_back
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#define int long long
#define double long double
#define mod 1000000007
const int mxn=2*1e5,lg=25;
int pa[mxn+10],n;
vector<int>adj[mxn+10];
int he[mxn+10],h[mxn+10],up[mxn+10][lg+10];
void dfs(int cur,int p){
    for(auto i:adj[cur]){
        if(i==p)continue;
        up[i][0]=cur;
        h[i]=h[cur]+1;
        dfs(i,cur);
    }
}
int lca(int a,int b){
    if(h[a]<h[b])swap(a,b);
    int k=h[a]-h[b];
    for(int i=0;i<=lg;i++)if(k&(1<<i))a=up[a][i];
    if(a==b)return a;
    for(int i=lg;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 h[a]+h[b]-(2*h[lca(a,b)]);
}
int find(int u){
    if(pa[u]==u)return u;
    return pa[u]=find(pa[u]);
}
int dp[mxn+10];//max
int32_t main(){
    fastio
    cin>>n;
    for(int i=1;i<=n;i++){
        int a;cin>>a;
        he[i]=a;
        pa[i]=i;
    }
    for(int i=0;i<n-1;i++){
        int a,b;cin>>a>>b;
        adj[he[a]].pb(he[b]);//id by height
        adj[he[b]].pb(he[a]);
    }
    dfs(n,-1);
    for(int i=1;i<=lg;i++)for(int j=1;j<=n;j++)up[j][i]=up[up[j][i-1]][i-1];
    for(int i=1;i<=n;i++){
        for(auto j:adj[i]){
            int c=find(j);
            if(c<i){
                dp[i]=max(dp[i],dp[c]+cal(i,c));
                pa[c]=i;
            }
        }
    }
    cout<<dp[n];
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 2 ms 9048 KB Output is correct
4 Correct 2 ms 9052 KB Output is correct
5 Correct 2 ms 9048 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 1 ms 9048 KB Output is correct
8 Correct 3 ms 9196 KB Output is correct
9 Correct 2 ms 9048 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 2 ms 9048 KB Output is correct
4 Correct 2 ms 9052 KB Output is correct
5 Correct 2 ms 9048 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 1 ms 9048 KB Output is correct
8 Correct 3 ms 9196 KB Output is correct
9 Correct 2 ms 9048 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 2 ms 9048 KB Output is correct
16 Correct 2 ms 9052 KB Output is correct
17 Correct 2 ms 9048 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 2 ms 9048 KB Output is correct
4 Correct 2 ms 9052 KB Output is correct
5 Correct 2 ms 9048 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 1 ms 9048 KB Output is correct
8 Correct 3 ms 9196 KB Output is correct
9 Correct 2 ms 9048 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 2 ms 9048 KB Output is correct
16 Correct 2 ms 9052 KB Output is correct
17 Correct 2 ms 9048 KB Output is correct
18 Correct 4 ms 11724 KB Output is correct
19 Correct 4 ms 11612 KB Output is correct
20 Correct 4 ms 11608 KB Output is correct
21 Correct 4 ms 11608 KB Output is correct
22 Correct 4 ms 11608 KB Output is correct
23 Correct 5 ms 11640 KB Output is correct
24 Correct 4 ms 11608 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 2 ms 9048 KB Output is correct
4 Correct 2 ms 9052 KB Output is correct
5 Correct 2 ms 9048 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 1 ms 9048 KB Output is correct
8 Correct 3 ms 9196 KB Output is correct
9 Correct 2 ms 9048 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 2 ms 9048 KB Output is correct
16 Correct 2 ms 9052 KB Output is correct
17 Correct 2 ms 9048 KB Output is correct
18 Correct 4 ms 11724 KB Output is correct
19 Correct 4 ms 11612 KB Output is correct
20 Correct 4 ms 11608 KB Output is correct
21 Correct 4 ms 11608 KB Output is correct
22 Correct 4 ms 11608 KB Output is correct
23 Correct 5 ms 11640 KB Output is correct
24 Correct 4 ms 11608 KB Output is correct
25 Correct 2 ms 9048 KB Output is correct
26 Correct 4 ms 11612 KB Output is correct
27 Correct 4 ms 11608 KB Output is correct
28 Correct 4 ms 11608 KB Output is correct
29 Correct 4 ms 11608 KB Output is correct
30 Correct 4 ms 11356 KB Output is correct
31 Correct 4 ms 11356 KB Output is correct
32 Correct 4 ms 11356 KB Output is correct
33 Correct 4 ms 11352 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 2 ms 9048 KB Output is correct
4 Correct 2 ms 9052 KB Output is correct
5 Correct 2 ms 9048 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 1 ms 9048 KB Output is correct
8 Correct 3 ms 9196 KB Output is correct
9 Correct 2 ms 9048 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 2 ms 9048 KB Output is correct
16 Correct 2 ms 9052 KB Output is correct
17 Correct 2 ms 9048 KB Output is correct
18 Correct 4 ms 11724 KB Output is correct
19 Correct 4 ms 11612 KB Output is correct
20 Correct 4 ms 11608 KB Output is correct
21 Correct 4 ms 11608 KB Output is correct
22 Correct 4 ms 11608 KB Output is correct
23 Correct 5 ms 11640 KB Output is correct
24 Correct 4 ms 11608 KB Output is correct
25 Correct 129 ms 88760 KB Output is correct
26 Correct 127 ms 88400 KB Output is correct
27 Correct 135 ms 88656 KB Output is correct
28 Correct 153 ms 85584 KB Output is correct
29 Correct 154 ms 87348 KB Output is correct
30 Correct 155 ms 86640 KB Output is correct
31 Correct 177 ms 87352 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 169 ms 77476 KB Output is correct
4 Correct 157 ms 77648 KB Output is correct
5 Correct 163 ms 77504 KB Output is correct

Subtask #7
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 2 ms 9052 KB Output is correct
3 Correct 2 ms 9048 KB Output is correct
4 Correct 2 ms 9052 KB Output is correct
5 Correct 2 ms 9048 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 1 ms 9048 KB Output is correct
8 Correct 3 ms 9196 KB Output is correct
9 Correct 2 ms 9048 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 2 ms 9048 KB Output is correct
16 Correct 2 ms 9052 KB Output is correct
17 Correct 2 ms 9048 KB Output is correct
18 Correct 4 ms 11724 KB Output is correct
19 Correct 4 ms 11612 KB Output is correct
20 Correct 4 ms 11608 KB Output is correct
21 Correct 4 ms 11608 KB Output is correct
22 Correct 4 ms 11608 KB Output is correct
23 Correct 5 ms 11640 KB Output is correct
24 Correct 4 ms 11608 KB Output is correct
25 Correct 2 ms 9048 KB Output is correct
26 Correct 4 ms 11612 KB Output is correct
27 Correct 4 ms 11608 KB Output is correct
28 Correct 4 ms 11608 KB Output is correct
29 Correct 4 ms 11608 KB Output is correct
30 Correct 4 ms 11356 KB Output is correct
31 Correct 4 ms 11356 KB Output is correct
32 Correct 4 ms 11356 KB Output is correct
33 Correct 4 ms 11352 KB Output is correct
34 Correct 129 ms 88760 KB Output is correct
35 Correct 127 ms 88400 KB Output is correct
36 Correct 135 ms 88656 KB Output is correct
37 Correct 153 ms 85584 KB Output is correct
38 Correct 154 ms 87348 KB Output is correct
39 Correct 155 ms 86640 KB Output is correct
40 Correct 177 ms 87352 KB Output is correct
41 Correct 2 ms 9048 KB Output is correct
42 Correct 2 ms 9052 KB Output is correct
43 Correct 169 ms 77476 KB Output is correct
44 Correct 157 ms 77648 KB Output is correct
45 Correct 163 ms 77504 KB Output is correct
46 Correct 144 ms 85328 KB Output is correct
47 Correct 152 ms 85328 KB Output is correct
48 Correct 142 ms 86740 KB Output is correct
49 Correct 161 ms 85272 KB Output is correct
50 Correct 182 ms 77392 KB Output is correct
51 Correct 212 ms 77288 KB Output is correct
52 Correct 170 ms 77280 KB Output is correct
53 Correct 178 ms 77232 KB Output is correct