oj.uz

Submission #440446

# Submission time Handle Problem Language Result Execution time Memory
440446 2021-07-02T09:55:27 Z prvocislo Exam (eJOI20_exam) C++17
100 / 100
 214 ms 13880 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
 
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n), b(n);
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < n; i++) cin >> b[i];
    vector<vector<int> > v(n, vector<int>(2, -1));
    for (int it = 0; it < 2; it++) 
    {
        map<int, int> m;
        vector<pair<int, int>> stk; // {hodnota, index}
        for (int k = 0; k < n; k++)
        {
            int i = it ? n - k - 1 : k;
            while (!stk.empty() && a[i] > stk.back().first) 
                m[stk.back().first] = -1, stk.pop_back();
            stk.push_back({a[i], i}); m[a[i]] = i;
            if (m.count(b[i]) && m[b[i]] != -1)
                v[i][it] = m[b[i]];
        }
    }
    vector<int> u;
    for (int i = 0; i < n; i++)
    {
        if (v[i][1] != -1) u.push_back(v[i][1]);
        if (v[i][0] != -1 && v[i][0] != v[i][1]) u.push_back(v[i][0]);
    }
    vector<int> l;
    for (int i : u)
    {
        int id = upper_bound(l.begin(), l.end(), i) - l.begin();
        if (id == l.size()) l.push_back(i);
        else l[id] = i;
    }
    cout << l.size() << "\n";
    return 0;
}

Compilation message

exam.cpp: In function 'int main()':
exam.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         if (id == l.size()) l.push_back(i);
      |             ~~~^~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 220 KB Output is correct
2 Correct 0 ms 220 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Correct 1 ms 220 KB Output is correct
6 Correct 1 ms 220 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 10 ms 2272 KB Output is correct
3 Correct 87 ms 11848 KB Output is correct
4 Correct 34 ms 8752 KB Output is correct
5 Correct 158 ms 13196 KB Output is correct
6 Correct 29 ms 7680 KB Output is correct
7 Correct 41 ms 8732 KB Output is correct
8 Correct 129 ms 11468 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 476 KB Output is correct
4 Correct 5 ms 860 KB Output is correct
5 Correct 5 ms 988 KB Output is correct
6 Correct 5 ms 984 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 860 KB Output is correct
2 Correct 62 ms 5412 KB Output is correct
3 Correct 204 ms 12420 KB Output is correct
4 Correct 214 ms 13144 KB Output is correct
5 Correct 144 ms 13880 KB Output is correct
6 Correct 153 ms 13036 KB Output is correct
7 Correct 130 ms 13624 KB Output is correct
8 Correct 204 ms 12424 KB Output is correct
9 Correct 193 ms 12352 KB Output is correct
10 Correct 116 ms 12860 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 220 KB Output is correct
2 Correct 0 ms 220 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Correct 1 ms 220 KB Output is correct
6 Correct 1 ms 220 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct

Subtask #6
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 220 KB Output is correct
2 Correct 0 ms 220 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Correct 1 ms 220 KB Output is correct
6 Correct 1 ms 220 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 2 ms 476 KB Output is correct
10 Correct 5 ms 860 KB Output is correct
11 Correct 5 ms 988 KB Output is correct
12 Correct 5 ms 984 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 3 ms 716 KB Output is correct
24 Correct 3 ms 716 KB Output is correct
25 Correct 3 ms 708 KB Output is correct
26 Correct 4 ms 676 KB Output is correct
27 Correct 3 ms 596 KB Output is correct
28 Correct 6 ms 880 KB Output is correct
29 Correct 4 ms 800 KB Output is correct
30 Correct 4 ms 860 KB Output is correct
31 Correct 5 ms 852 KB Output is correct
32 Correct 6 ms 860 KB Output is correct