oj.uz

Submission #760191

# Submission time Handle Problem Language Result Execution time Memory
760191 2023-06-17T09:20:34 Z danikoynov Sequence (APIO23_sequence) C++17
35 / 100
 304 ms 31532 KB 
#include "sequence.h"

#include <bits/stdc++.h>
using namespace std;

const int maxn = 5e5 + 10;
int occ[maxn];
vector < pair < int, int > > ranges[maxn];
int sequence(int N, vector<int> A)
{
    if (N > 2e3)
    {
        int len = 1;
        for (int i = 1; i < N; i ++)
        {
            if (A[i] == A[i - 1])
                len ++;
            else
            {
                ranges[A[i - 1]].push_back({i - len, i - 1});
                len = 1;
            }
        }
        ranges[A[N - 1]].push_back({N - len, N - 1});

        int ans = 1;
        for (int i = 1; i <= N; i ++)
        {
            for (pair < int, int > cur : ranges[i])
                ans = max(ans, cur.second - cur.first + 1);

            if (ranges[i].size() == 2)
            {
                pair < int, int > lf, rf;
                lf = ranges[i][0];
                rf = ranges[i][1];
                int big = rf.first - lf.second - 1;
                int small = lf.first + N - rf.second - 1;
                int mid = (lf.second - lf.first + 1 + rf.second - rf.first + 1);
                if (big > small + mid)
                    continue;
                    ///cout << i << " : " << small << " : " << big << " : " << mid << endl;
                    //cout << lf.first << " " << rf.second << endl;
                ans = max(ans, mid);
            }
        }
        return ans;
    }
    else
    {
    multiset < int > lf, rf;
    int ans = 1;
    for (int i = 0; i < N; i ++)
    {
        for (int j = 0; j <= N; j ++)
            occ[j] = 0;

        lf.clear();
        rf.clear();

        lf.insert(A[i]);
        occ[A[i]] ++;
        for (int j = i + 1; j < N; j ++)
        {
            occ[A[j]] ++;
            if (A[j] > *lf.rbegin())
                rf.insert(A[j]);
            else
                lf.insert(A[j]);

            while(lf.size() > rf.size() + 1)
            {
                int x = *lf.rbegin();
                lf.erase(lf.find(x));
                rf.insert(x);
            }
            while(rf.size() > lf.size())
            {
                int x = *rf.begin();
                rf.erase(rf.find(x));
                lf.insert(x);
            }

            if ((j - i + 1) % 2 == 0)
            {
                ans = max(ans, occ[*lf.rbegin()]);
                ans = max(ans, occ[*rf.begin()]);
            }
            else
            {
                ans = max(ans, occ[*lf.rbegin()]);
            }
        }
    }
    return ans;
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 6 ms 12008 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 11988 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct
11 Correct 6 ms 11988 KB Output is correct
12 Correct 6 ms 11988 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 6 ms 12008 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 11988 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct
11 Correct 6 ms 11988 KB Output is correct
12 Correct 6 ms 11988 KB Output is correct
13 Correct 259 ms 12116 KB Output is correct
14 Correct 254 ms 12148 KB Output is correct
15 Correct 261 ms 12144 KB Output is correct
16 Correct 266 ms 12144 KB Output is correct
17 Correct 269 ms 12140 KB Output is correct
18 Correct 184 ms 12140 KB Output is correct
19 Correct 272 ms 12144 KB Output is correct
20 Correct 304 ms 12144 KB Output is correct
21 Correct 262 ms 12144 KB Output is correct
22 Correct 259 ms 12144 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 62 ms 25852 KB Output is correct
3 Correct 61 ms 25796 KB Output is correct
4 Correct 37 ms 15940 KB Output is correct
5 Correct 62 ms 24812 KB Output is correct
6 Correct 60 ms 24752 KB Output is correct
7 Correct 41 ms 15948 KB Output is correct
8 Correct 39 ms 15936 KB Output is correct
9 Correct 45 ms 15920 KB Output is correct

Subtask #4
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Incorrect 41 ms 18592 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 96 ms 31532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 6 ms 12008 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 11988 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct
11 Correct 6 ms 11988 KB Output is correct
12 Correct 6 ms 11988 KB Output is correct
13 Correct 259 ms 12116 KB Output is correct
14 Correct 254 ms 12148 KB Output is correct
15 Correct 261 ms 12144 KB Output is correct
16 Correct 266 ms 12144 KB Output is correct
17 Correct 269 ms 12140 KB Output is correct
18 Correct 184 ms 12140 KB Output is correct
19 Correct 272 ms 12144 KB Output is correct
20 Correct 304 ms 12144 KB Output is correct
21 Correct 262 ms 12144 KB Output is correct
22 Correct 259 ms 12144 KB Output is correct
23 Incorrect 21 ms 14368 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #7
0.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 6 ms 12008 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 11988 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct
11 Correct 6 ms 11988 KB Output is correct
12 Correct 6 ms 11988 KB Output is correct
13 Correct 259 ms 12116 KB Output is correct
14 Correct 254 ms 12148 KB Output is correct
15 Correct 261 ms 12144 KB Output is correct
16 Correct 266 ms 12144 KB Output is correct
17 Correct 269 ms 12140 KB Output is correct
18 Correct 184 ms 12140 KB Output is correct
19 Correct 272 ms 12144 KB Output is correct
20 Correct 304 ms 12144 KB Output is correct
21 Correct 262 ms 12144 KB Output is correct
22 Correct 259 ms 12144 KB Output is correct
23 Correct 62 ms 25852 KB Output is correct
24 Correct 61 ms 25796 KB Output is correct
25 Correct 37 ms 15940 KB Output is correct
26 Correct 62 ms 24812 KB Output is correct
27 Correct 60 ms 24752 KB Output is correct
28 Correct 41 ms 15948 KB Output is correct
29 Correct 39 ms 15936 KB Output is correct
30 Correct 45 ms 15920 KB Output is correct
31 Incorrect 41 ms 18592 KB Output isn't correct
32 Halted 0 ms 0 KB -