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Submission #979476

# Submission time Handle Problem Language Result Execution time Memory
979476 2024-05-11T05:40:54 Z 12345678 Sequence (APIO23_sequence) C++17
11 / 100
 66 ms 8492 KB 
#include "sequence.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=2e3+5;

int n, a[nx], res;

struct persist
{
    struct node
    {
        int f;
        node *l, *r;
        node(int f): f(f), l(0), r(0){} 
    };
    typedef node* pnode;
    pnode rt[nx];
    void build(int l, int r, pnode &k)
    {
        k=new node(0);
        if (l==r) return;
        int md=(l+r)/2;
        build(l, md, k->l);
        build(md+1, r, k->r);
    }
    void update(int l, int r, pnode &k, pnode t, int idx)
    {
        k=new node(*t);
        if (l==r) return k->f++, void();
        int md=(l+r)/2;
        if (idx<=md) update(l, md, k->l, t->l, idx);
        else update(md+1, r, k->r, t->r, idx);
        k->f=k->l->f+k->r->f;
    }
    int query(int l, int r, pnode k, pnode t, int key)
    {
        if (l==r) return k->f-t->f;
        int md=(l+r)/2;
        if ((k->l->f-t->l->f)>=key) return query(l, md, k->l, t->l, key);
        else return query(md+1, r, k->r, t->r, key-(k->l->f-t->l->f));
    }
} s;

int sequence(int N, std::vector<int> A) {
    n=N;
    for (int i=1; i<=n; i++) a[i]=A[i-1];
    s.build(1, n, s.rt[0]);
    for (int i=1; i<=n; i++) s.update(1, n, s.rt[i], s.rt[i-1], a[i]);
    for (int i=1; i<=n; i++)
    {
        for (int j=1; j<=i; j++)
        {
            if ((i-j+1)%2) res=max(res, s.query(1, n, s.rt[i], s.rt[j-1], ((i-j+2)/2)));
            else res=max({res, s.query(1, n, s.rt[i], s.rt[j-1], (i-j+1)/2), s.query(1, n, s.rt[i], s.rt[j-1], (i-j+1/2)+1)});
        }
    }
    return res;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 472 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #2
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 472 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 63 ms 1116 KB Output is correct
14 Correct 66 ms 1320 KB Output is correct
15 Correct 47 ms 1116 KB Output is correct
16 Correct 47 ms 1116 KB Output is correct
17 Incorrect 43 ms 1112 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #3
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 44 ms 8492 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 38 ms 8284 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 44 ms 8288 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 472 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 63 ms 1116 KB Output is correct
14 Correct 66 ms 1320 KB Output is correct
15 Correct 47 ms 1116 KB Output is correct
16 Correct 47 ms 1116 KB Output is correct
17 Incorrect 43 ms 1112 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #7
0.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 472 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 63 ms 1116 KB Output is correct
14 Correct 66 ms 1320 KB Output is correct
15 Correct 47 ms 1116 KB Output is correct
16 Correct 47 ms 1116 KB Output is correct
17 Incorrect 43 ms 1112 KB Output isn't correct
18 Halted 0 ms 0 KB -