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Submission #936464

# Submission time Handle Problem Language Result Execution time Memory
936464 2024-03-01T22:04:12 Z Marco_Escandon Cat Exercise (JOI23_ho_t4) C++11
100 / 100
 491 ms 76116 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,ll padre, ll p)
{
    bl[0][node]=padre; v[node]=p;
    for(int i=1; i<22; i++)
        bl[i][node]=bl[i-1][bl[i-1][node]];
    for(auto i:G[node])
        if(padre!=i)
            dfs(i,node,p+1);
}
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(1,0,0);
    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<<temp.second<<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 12 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 8 ms 45676 KB Output is correct
4 Correct 8 ms 45660 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45632 KB Output is correct
7 Correct 7 ms 45660 KB Output is correct
8 Correct 10 ms 45680 KB Output is correct
9 Correct 7 ms 45632 KB Output is correct
10 Correct 8 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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45676 KB Output is correct
4 Correct 8 ms 45660 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45632 KB Output is correct
7 Correct 7 ms 45660 KB Output is correct
8 Correct 10 ms 45680 KB Output is correct
9 Correct 7 ms 45632 KB Output is correct
10 Correct 8 ms 45660 KB Output is correct
11 Correct 9 ms 45660 KB Output is correct
12 Correct 7 ms 45656 KB Output is correct
13 Correct 8 ms 45620 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 7 ms 45672 KB Output is correct
16 Correct 7 ms 45672 KB Output is correct
17 Correct 8 ms 45936 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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45676 KB Output is correct
4 Correct 8 ms 45660 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45632 KB Output is correct
7 Correct 7 ms 45660 KB Output is correct
8 Correct 10 ms 45680 KB Output is correct
9 Correct 7 ms 45632 KB Output is correct
10 Correct 8 ms 45660 KB Output is correct
11 Correct 9 ms 45660 KB Output is correct
12 Correct 7 ms 45656 KB Output is correct
13 Correct 8 ms 45620 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 7 ms 45672 KB Output is correct
16 Correct 7 ms 45672 KB Output is correct
17 Correct 8 ms 45936 KB Output is correct
18 Correct 12 ms 46400 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 12 ms 46440 KB Output is correct
21 Correct 12 ms 46368 KB Output is correct
22 Correct 12 ms 46184 KB Output is correct
23 Correct 12 ms 46184 KB Output is correct
24 Correct 12 ms 46184 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 8 ms 45676 KB Output is correct
4 Correct 8 ms 45660 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45632 KB Output is correct
7 Correct 7 ms 45660 KB Output is correct
8 Correct 10 ms 45680 KB Output is correct
9 Correct 7 ms 45632 KB Output is correct
10 Correct 8 ms 45660 KB Output is correct
11 Correct 9 ms 45660 KB Output is correct
12 Correct 7 ms 45656 KB Output is correct
13 Correct 8 ms 45620 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 7 ms 45672 KB Output is correct
16 Correct 7 ms 45672 KB Output is correct
17 Correct 8 ms 45936 KB Output is correct
18 Correct 12 ms 46400 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 12 ms 46440 KB Output is correct
21 Correct 12 ms 46368 KB Output is correct
22 Correct 12 ms 46184 KB Output is correct
23 Correct 12 ms 46184 KB Output is correct
24 Correct 12 ms 46184 KB Output is correct
25 Correct 7 ms 45672 KB Output is correct
26 Correct 12 ms 46580 KB Output is correct
27 Correct 12 ms 46184 KB Output is correct
28 Correct 12 ms 46140 KB Output is correct
29 Correct 12 ms 46184 KB Output is correct
30 Correct 13 ms 46120 KB Output is correct
31 Correct 13 ms 46184 KB Output is correct
32 Correct 15 ms 46184 KB Output is correct
33 Correct 12 ms 46184 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 8 ms 45676 KB Output is correct
4 Correct 8 ms 45660 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45632 KB Output is correct
7 Correct 7 ms 45660 KB Output is correct
8 Correct 10 ms 45680 KB Output is correct
9 Correct 7 ms 45632 KB Output is correct
10 Correct 8 ms 45660 KB Output is correct
11 Correct 9 ms 45660 KB Output is correct
12 Correct 7 ms 45656 KB Output is correct
13 Correct 8 ms 45620 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 7 ms 45672 KB Output is correct
16 Correct 7 ms 45672 KB Output is correct
17 Correct 8 ms 45936 KB Output is correct
18 Correct 12 ms 46400 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 12 ms 46440 KB Output is correct
21 Correct 12 ms 46368 KB Output is correct
22 Correct 12 ms 46184 KB Output is correct
23 Correct 12 ms 46184 KB Output is correct
24 Correct 12 ms 46184 KB Output is correct
25 Correct 221 ms 75992 KB Output is correct
26 Correct 224 ms 75620 KB Output is correct
27 Correct 231 ms 76116 KB Output is correct
28 Correct 306 ms 73968 KB Output is correct
29 Correct 320 ms 74372 KB Output is correct
30 Correct 305 ms 74068 KB Output is correct
31 Correct 302 ms 74132 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 315 ms 67696 KB Output is correct
4 Correct 321 ms 67672 KB Output is correct
5 Correct 304 ms 67664 KB Output is correct

Subtask #7
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 45660 KB Output is correct
2 Correct 7 ms 45660 KB Output is correct
3 Correct 8 ms 45676 KB Output is correct
4 Correct 8 ms 45660 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45632 KB Output is correct
7 Correct 7 ms 45660 KB Output is correct
8 Correct 10 ms 45680 KB Output is correct
9 Correct 7 ms 45632 KB Output is correct
10 Correct 8 ms 45660 KB Output is correct
11 Correct 9 ms 45660 KB Output is correct
12 Correct 7 ms 45656 KB Output is correct
13 Correct 8 ms 45620 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 7 ms 45672 KB Output is correct
16 Correct 7 ms 45672 KB Output is correct
17 Correct 8 ms 45936 KB Output is correct
18 Correct 12 ms 46400 KB Output is correct
19 Correct 12 ms 46428 KB Output is correct
20 Correct 12 ms 46440 KB Output is correct
21 Correct 12 ms 46368 KB Output is correct
22 Correct 12 ms 46184 KB Output is correct
23 Correct 12 ms 46184 KB Output is correct
24 Correct 12 ms 46184 KB Output is correct
25 Correct 7 ms 45672 KB Output is correct
26 Correct 12 ms 46580 KB Output is correct
27 Correct 12 ms 46184 KB Output is correct
28 Correct 12 ms 46140 KB Output is correct
29 Correct 12 ms 46184 KB Output is correct
30 Correct 13 ms 46120 KB Output is correct
31 Correct 13 ms 46184 KB Output is correct
32 Correct 15 ms 46184 KB Output is correct
33 Correct 12 ms 46184 KB Output is correct
34 Correct 221 ms 75992 KB Output is correct
35 Correct 224 ms 75620 KB Output is correct
36 Correct 231 ms 76116 KB Output is correct
37 Correct 306 ms 73968 KB Output is correct
38 Correct 320 ms 74372 KB Output is correct
39 Correct 305 ms 74068 KB Output is correct
40 Correct 302 ms 74132 KB Output is correct
41 Correct 8 ms 45656 KB Output is correct
42 Correct 8 ms 45660 KB Output is correct
43 Correct 315 ms 67696 KB Output is correct
44 Correct 321 ms 67672 KB Output is correct
45 Correct 304 ms 67664 KB Output is correct
46 Correct 490 ms 71764 KB Output is correct
47 Correct 491 ms 70724 KB Output is correct
48 Correct 459 ms 72108 KB Output is correct
49 Correct 488 ms 70996 KB Output is correct
50 Correct 440 ms 67408 KB Output is correct
51 Correct 442 ms 67324 KB Output is correct
52 Correct 465 ms 67148 KB Output is correct
53 Correct 450 ms 67372 KB Output is correct