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Submission #936393

# Submission time Handle Problem Language Result Execution time Memory
936393 2024-03-01T18:38:34 Z Marco_Escandon Cat Exercise (JOI23_ho_t4) C++11
64 / 100
 626 ms 75348 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
struct DSUF{
    vector<ll> P;
    ll fs(ll node){
        if(P[node]==node) return node;
        return P[node]=fs(P[node]);
    }
    void us(ll a, ll b){
        a=fs(a);b=fs(b);
        if(a!=b) P[b]=a;
    }
    DSUF(ll n){
        P.assign(n+5,0);
        for(int i=0; i<P.size(); i++)
            P[i]=i;
    }
};
vector<ll> g[200001], v(200001,0),G[200001];
ll bl[22][200001];
void dfs(ll node)
{
    for(int j=1; j<22; j++)
        bl[j][node]=bl[j-1][bl[j-1][node]];
    for(auto i:G[node])
    {
        v[i]=v[node]+1;
        bl[0][i]=node;
        dfs(i);
    }           
}
ll cost(ll a, ll b)
{
    ll a2=a,b2=b;
    if(v[a]<v[b])
        swap(a,b);
    ll temp=v[a]-v[b];
    for(int i=21; i>-1; i--)
        if((temp&(1LL<<i))!=0)
            a=bl[i][a];
    for(int i=21; i>-1; i--)
    {
        if(bl[i][a]!=bl[i][b])
        {
            a=bl[i][a];
            b=bl[i][b];
        }
    }
    if(a!=b) a=bl[0][a];
    return v[a2]+v[b2]-2*v[a];
}
int main()
{
    ll n;
    cin>>n;
    pair<ll,ll> cad[n];
    DSUF asd(n+2);
    for(int i=0; i<n; i++)
    {
        cin>>cad[i].first;
        cad[i].second=i+1;
    }
    for(int i=0; i<n-1; i++)
    {
        ll a,b;
        cin>>a>>b;
        G[a].push_back(b);
        if(cad[a-1].first<cad[b-1].first) swap(a,b);
        g[a].push_back(b);
    }
    dfs(1);
    sort(cad,cad+n);
    ll sol[n+2]={ };
    for(int i=0; i<n; i++)
    {
        pair<ll,ll> temp=cad[i];
        for(auto i:g[temp.second])
        {
            sol[temp.second]=max(sol[temp.second],sol[asd.fs(i)]+cost(temp.second,asd.fs(i)));
            asd.us(temp.second,i);
            sol[asd.fs(i)]=sol[temp.second];
        }
    }
    cout<<sol[cad[n-1].second];
}

Compilation message

Main.cpp: In constructor 'DSUF::DSUF(ll)':
Main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         for(int i=0; i<P.size(); i++)
      |                      ~^~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 45640 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 9 ms 45656 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 7 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 7 ms 45656 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 45640 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 9 ms 45656 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 7 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 7 ms 45656 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 7 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 7 ms 45696 KB Output is correct
14 Correct 9 ms 45664 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45704 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 45640 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 9 ms 45656 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 7 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 7 ms 45656 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 7 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 7 ms 45696 KB Output is correct
14 Correct 9 ms 45664 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45704 KB Output is correct
18 Correct 11 ms 46424 KB Output is correct
19 Correct 11 ms 46428 KB Output is correct
20 Correct 11 ms 46428 KB Output is correct
21 Correct 15 ms 46408 KB Output is correct
22 Correct 13 ms 46172 KB Output is correct
23 Correct 13 ms 46168 KB Output is correct
24 Correct 12 ms 46272 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 45640 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 9 ms 45656 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 7 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 7 ms 45656 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 7 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 7 ms 45696 KB Output is correct
14 Correct 9 ms 45664 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45704 KB Output is correct
18 Correct 11 ms 46424 KB Output is correct
19 Correct 11 ms 46428 KB Output is correct
20 Correct 11 ms 46428 KB Output is correct
21 Correct 15 ms 46408 KB Output is correct
22 Correct 13 ms 46172 KB Output is correct
23 Correct 13 ms 46168 KB Output is correct
24 Correct 12 ms 46272 KB Output is correct
25 Correct 8 ms 45660 KB Output is correct
26 Incorrect 13 ms 46088 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 45640 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 9 ms 45656 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 7 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 7 ms 45656 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 7 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 7 ms 45696 KB Output is correct
14 Correct 9 ms 45664 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45704 KB Output is correct
18 Correct 11 ms 46424 KB Output is correct
19 Correct 11 ms 46428 KB Output is correct
20 Correct 11 ms 46428 KB Output is correct
21 Correct 15 ms 46408 KB Output is correct
22 Correct 13 ms 46172 KB Output is correct
23 Correct 13 ms 46168 KB Output is correct
24 Correct 12 ms 46272 KB Output is correct
25 Correct 221 ms 75348 KB Output is correct
26 Correct 245 ms 74836 KB Output is correct
27 Correct 238 ms 75128 KB Output is correct
28 Correct 626 ms 73484 KB Output is correct
29 Correct 609 ms 73604 KB Output is correct
30 Correct 558 ms 73488 KB Output is correct
31 Correct 582 ms 73628 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 45616 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 522 ms 59528 KB Output is correct
4 Correct 496 ms 59524 KB Output is correct
5 Correct 528 ms 59396 KB Output is correct

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 45640 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 9 ms 45656 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 7 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 7 ms 45656 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 7 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 7 ms 45696 KB Output is correct
14 Correct 9 ms 45664 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45704 KB Output is correct
18 Correct 11 ms 46424 KB Output is correct
19 Correct 11 ms 46428 KB Output is correct
20 Correct 11 ms 46428 KB Output is correct
21 Correct 15 ms 46408 KB Output is correct
22 Correct 13 ms 46172 KB Output is correct
23 Correct 13 ms 46168 KB Output is correct
24 Correct 12 ms 46272 KB Output is correct
25 Correct 8 ms 45660 KB Output is correct
26 Incorrect 13 ms 46088 KB Output isn't correct
27 Halted 0 ms 0 KB -