oj.uz

Submission #936387

# Submission time Handle Problem Language Result Execution time Memory
936387 2024-03-01T18:29:49 Z Marco_Escandon Cat Exercise (JOI23_ho_t4) C++11
64 / 100
 648 ms 77616 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);
        }
    }
    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 12 ms 45660 KB Output is correct
2 Correct 9 ms 45620 KB Output is correct
3 Correct 9 ms 45660 KB Output is correct
4 Correct 7 ms 45624 KB Output is correct
5 Correct 7 ms 45620 KB Output is correct
6 Correct 7 ms 45660 KB Output is correct
7 Correct 8 ms 45660 KB Output is correct
8 Correct 7 ms 45492 KB Output is correct
9 Correct 8 ms 45656 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 12 ms 45660 KB Output is correct
2 Correct 9 ms 45620 KB Output is correct
3 Correct 9 ms 45660 KB Output is correct
4 Correct 7 ms 45624 KB Output is correct
5 Correct 7 ms 45620 KB Output is correct
6 Correct 7 ms 45660 KB Output is correct
7 Correct 8 ms 45660 KB Output is correct
8 Correct 7 ms 45492 KB Output is correct
9 Correct 8 ms 45656 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45616 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 8 ms 45656 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45912 KB Output is correct
17 Correct 7 ms 45660 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 45660 KB Output is correct
2 Correct 9 ms 45620 KB Output is correct
3 Correct 9 ms 45660 KB Output is correct
4 Correct 7 ms 45624 KB Output is correct
5 Correct 7 ms 45620 KB Output is correct
6 Correct 7 ms 45660 KB Output is correct
7 Correct 8 ms 45660 KB Output is correct
8 Correct 7 ms 45492 KB Output is correct
9 Correct 8 ms 45656 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45616 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 8 ms 45656 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45912 KB Output is correct
17 Correct 7 ms 45660 KB Output is correct
18 Correct 13 ms 46428 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 13 ms 46408 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 14 ms 46428 KB Output is correct
24 Correct 12 ms 46308 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 45660 KB Output is correct
2 Correct 9 ms 45620 KB Output is correct
3 Correct 9 ms 45660 KB Output is correct
4 Correct 7 ms 45624 KB Output is correct
5 Correct 7 ms 45620 KB Output is correct
6 Correct 7 ms 45660 KB Output is correct
7 Correct 8 ms 45660 KB Output is correct
8 Correct 7 ms 45492 KB Output is correct
9 Correct 8 ms 45656 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45616 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 8 ms 45656 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45912 KB Output is correct
17 Correct 7 ms 45660 KB Output is correct
18 Correct 13 ms 46428 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 13 ms 46408 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 14 ms 46428 KB Output is correct
24 Correct 12 ms 46308 KB Output is correct
25 Correct 8 ms 45660 KB Output is correct
26 Incorrect 13 ms 46156 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 12 ms 45660 KB Output is correct
2 Correct 9 ms 45620 KB Output is correct
3 Correct 9 ms 45660 KB Output is correct
4 Correct 7 ms 45624 KB Output is correct
5 Correct 7 ms 45620 KB Output is correct
6 Correct 7 ms 45660 KB Output is correct
7 Correct 8 ms 45660 KB Output is correct
8 Correct 7 ms 45492 KB Output is correct
9 Correct 8 ms 45656 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45616 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 8 ms 45656 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45912 KB Output is correct
17 Correct 7 ms 45660 KB Output is correct
18 Correct 13 ms 46428 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 13 ms 46408 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 14 ms 46428 KB Output is correct
24 Correct 12 ms 46308 KB Output is correct
25 Correct 236 ms 77616 KB Output is correct
26 Correct 265 ms 76976 KB Output is correct
27 Correct 255 ms 76952 KB Output is correct
28 Correct 648 ms 75448 KB Output is correct
29 Correct 599 ms 75540 KB Output is correct
30 Correct 613 ms 75760 KB Output is correct
31 Correct 586 ms 75528 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 45660 KB Output is correct
2 Correct 7 ms 45632 KB Output is correct
3 Correct 611 ms 61568 KB Output is correct
4 Correct 617 ms 61780 KB Output is correct
5 Correct 544 ms 61776 KB Output is correct

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 45660 KB Output is correct
2 Correct 9 ms 45620 KB Output is correct
3 Correct 9 ms 45660 KB Output is correct
4 Correct 7 ms 45624 KB Output is correct
5 Correct 7 ms 45620 KB Output is correct
6 Correct 7 ms 45660 KB Output is correct
7 Correct 8 ms 45660 KB Output is correct
8 Correct 7 ms 45492 KB Output is correct
9 Correct 8 ms 45656 KB Output is correct
10 Correct 7 ms 45660 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45616 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 8 ms 45656 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45912 KB Output is correct
17 Correct 7 ms 45660 KB Output is correct
18 Correct 13 ms 46428 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 13 ms 46408 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 14 ms 46428 KB Output is correct
24 Correct 12 ms 46308 KB Output is correct
25 Correct 8 ms 45660 KB Output is correct
26 Incorrect 13 ms 46156 KB Output isn't correct
27 Halted 0 ms 0 KB -