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Submission #936374

# Submission time Handle Problem Language Result Execution time Memory
936374 2024-03-01T18:04:30 Z Marco_Escandon Cat Exercise (JOI23_ho_t4) C++11
64 / 100
 324 ms 79172 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])
        if(v[i]==0){
            v[i]=v[node]+1;
            bl[0][i]=node;
            dfs(i);
        }       
}
ll cost(ll a, ll b)
{
    if(v[a]<v[b])
        swap(a,b);
    ll cost=v[a]-v[b];
    for(int i=21; i>-1; i--)
        if((cost&(1<<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];
            cost+=(1<<i)*2;
        }
    }
    if(a!=b) cost+=2;
    return cost;
}
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;
        if(cad[a-1].first<cad[b-1].first) swap(a,b);
        g[a].push_back(b);
        G[a].push_back(b);
        G[b].push_back(a);
    }
    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 8 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 7 ms 45660 KB Output is correct
4 Correct 8 ms 45684 KB Output is correct
5 Correct 7 ms 45816 KB Output is correct
6 Correct 9 ms 45660 KB Output is correct
7 Correct 9 ms 45660 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 8 ms 45660 KB Output is correct
10 Correct 7 ms 45648 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 7 ms 45660 KB Output is correct
4 Correct 8 ms 45684 KB Output is correct
5 Correct 7 ms 45816 KB Output is correct
6 Correct 9 ms 45660 KB Output is correct
7 Correct 9 ms 45660 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 8 ms 45660 KB Output is correct
10 Correct 7 ms 45648 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45600 KB Output is correct
13 Correct 8 ms 45672 KB Output is correct
14 Correct 7 ms 45620 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45660 KB Output is correct
17 Correct 9 ms 45660 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 7 ms 45660 KB Output is correct
4 Correct 8 ms 45684 KB Output is correct
5 Correct 7 ms 45816 KB Output is correct
6 Correct 9 ms 45660 KB Output is correct
7 Correct 9 ms 45660 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 8 ms 45660 KB Output is correct
10 Correct 7 ms 45648 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45600 KB Output is correct
13 Correct 8 ms 45672 KB Output is correct
14 Correct 7 ms 45620 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45660 KB Output is correct
17 Correct 9 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46608 KB Output is correct
20 Correct 13 ms 46428 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 12 ms 46312 KB Output is correct
24 Correct 12 ms 46424 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 7 ms 45660 KB Output is correct
4 Correct 8 ms 45684 KB Output is correct
5 Correct 7 ms 45816 KB Output is correct
6 Correct 9 ms 45660 KB Output is correct
7 Correct 9 ms 45660 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 8 ms 45660 KB Output is correct
10 Correct 7 ms 45648 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45600 KB Output is correct
13 Correct 8 ms 45672 KB Output is correct
14 Correct 7 ms 45620 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45660 KB Output is correct
17 Correct 9 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46608 KB Output is correct
20 Correct 13 ms 46428 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 12 ms 46312 KB Output is correct
24 Correct 12 ms 46424 KB Output is correct
25 Correct 8 ms 45660 KB Output is correct
26 Incorrect 12 ms 46172 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 8 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 7 ms 45660 KB Output is correct
4 Correct 8 ms 45684 KB Output is correct
5 Correct 7 ms 45816 KB Output is correct
6 Correct 9 ms 45660 KB Output is correct
7 Correct 9 ms 45660 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 8 ms 45660 KB Output is correct
10 Correct 7 ms 45648 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45600 KB Output is correct
13 Correct 8 ms 45672 KB Output is correct
14 Correct 7 ms 45620 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45660 KB Output is correct
17 Correct 9 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46608 KB Output is correct
20 Correct 13 ms 46428 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 12 ms 46312 KB Output is correct
24 Correct 12 ms 46424 KB Output is correct
25 Correct 231 ms 79172 KB Output is correct
26 Correct 226 ms 78644 KB Output is correct
27 Correct 224 ms 78580 KB Output is correct
28 Correct 317 ms 77272 KB Output is correct
29 Correct 305 ms 77264 KB Output is correct
30 Correct 323 ms 77424 KB Output is correct
31 Correct 324 ms 77264 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45656 KB Output is correct
2 Correct 8 ms 45660 KB Output is correct
3 Correct 311 ms 68176 KB Output is correct
4 Correct 315 ms 67888 KB Output is correct
5 Correct 316 ms 67884 KB Output is correct

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 7 ms 45660 KB Output is correct
4 Correct 8 ms 45684 KB Output is correct
5 Correct 7 ms 45816 KB Output is correct
6 Correct 9 ms 45660 KB Output is correct
7 Correct 9 ms 45660 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 8 ms 45660 KB Output is correct
10 Correct 7 ms 45648 KB Output is correct
11 Correct 8 ms 45660 KB Output is correct
12 Correct 8 ms 45600 KB Output is correct
13 Correct 8 ms 45672 KB Output is correct
14 Correct 7 ms 45620 KB Output is correct
15 Correct 8 ms 45660 KB Output is correct
16 Correct 8 ms 45660 KB Output is correct
17 Correct 9 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46608 KB Output is correct
20 Correct 13 ms 46428 KB Output is correct
21 Correct 13 ms 46428 KB Output is correct
22 Correct 13 ms 46428 KB Output is correct
23 Correct 12 ms 46312 KB Output is correct
24 Correct 12 ms 46424 KB Output is correct
25 Correct 8 ms 45660 KB Output is correct
26 Incorrect 12 ms 46172 KB Output isn't correct
27 Halted 0 ms 0 KB -