oj.uz

Submission #936376

# Submission time Handle Problem Language Result Execution time Memory
936376 2024-03-01T18:09:31 Z Marco_Escandon Cat Exercise (JOI23_ho_t4) C++11
64 / 100
 333 ms 75344 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)
{
    if(v[a]<v[b])
        swap(a,b);
    ll cost=v[a]-v[b];
    for(int i=21; i>-1; i--)
        if((cost&(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];
            cost+=(1LL<<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;
        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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45660 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 8 ms 45652 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 45600 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 45660 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 8 ms 45652 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 45600 KB Output is correct
11 Correct 8 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 9 ms 45608 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45660 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 8 ms 45652 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 45600 KB Output is correct
11 Correct 8 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 9 ms 45608 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46276 KB Output is correct
20 Correct 12 ms 46424 KB Output is correct
21 Correct 11 ms 46172 KB Output is correct
22 Correct 12 ms 46404 KB Output is correct
23 Correct 12 ms 46168 KB Output is correct
24 Correct 12 ms 46168 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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45660 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 8 ms 45652 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 45600 KB Output is correct
11 Correct 8 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 9 ms 45608 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46276 KB Output is correct
20 Correct 12 ms 46424 KB Output is correct
21 Correct 11 ms 46172 KB Output is correct
22 Correct 12 ms 46404 KB Output is correct
23 Correct 12 ms 46168 KB Output is correct
24 Correct 12 ms 46168 KB Output is correct
25 Correct 7 ms 45660 KB Output is correct
26 Incorrect 12 ms 45884 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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45660 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 8 ms 45652 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 45600 KB Output is correct
11 Correct 8 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 9 ms 45608 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46276 KB Output is correct
20 Correct 12 ms 46424 KB Output is correct
21 Correct 11 ms 46172 KB Output is correct
22 Correct 12 ms 46404 KB Output is correct
23 Correct 12 ms 46168 KB Output is correct
24 Correct 12 ms 46168 KB Output is correct
25 Correct 222 ms 75344 KB Output is correct
26 Correct 238 ms 74864 KB Output is correct
27 Correct 240 ms 74852 KB Output is correct
28 Correct 321 ms 73296 KB Output is correct
29 Correct 306 ms 73348 KB Output is correct
30 Correct 333 ms 73488 KB Output is correct
31 Correct 316 ms 73484 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 45660 KB Output is correct
2 Correct 7 ms 45492 KB Output is correct
3 Correct 307 ms 59524 KB Output is correct
4 Correct 307 ms 59476 KB Output is correct
5 Correct 303 ms 59480 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 7 ms 45660 KB Output is correct
3 Correct 8 ms 45660 KB Output is correct
4 Correct 7 ms 45656 KB Output is correct
5 Correct 9 ms 45660 KB Output is correct
6 Correct 8 ms 45660 KB Output is correct
7 Correct 8 ms 45652 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 45600 KB Output is correct
11 Correct 8 ms 45656 KB Output is correct
12 Correct 7 ms 45660 KB Output is correct
13 Correct 8 ms 45660 KB Output is correct
14 Correct 7 ms 45660 KB Output is correct
15 Correct 9 ms 45608 KB Output is correct
16 Correct 7 ms 45660 KB Output is correct
17 Correct 8 ms 45660 KB Output is correct
18 Correct 12 ms 46428 KB Output is correct
19 Correct 12 ms 46276 KB Output is correct
20 Correct 12 ms 46424 KB Output is correct
21 Correct 11 ms 46172 KB Output is correct
22 Correct 12 ms 46404 KB Output is correct
23 Correct 12 ms 46168 KB Output is correct
24 Correct 12 ms 46168 KB Output is correct
25 Correct 7 ms 45660 KB Output is correct
26 Incorrect 12 ms 45884 KB Output isn't correct
27 Halted 0 ms 0 KB -