Submission #751023

#	Time	Username	Problem	Language	Result	Execution time	Memory
751023		LucaLucaM	Exam (eJOI20_exam)	C++17	14 / 100	1085 ms	1108 KiB

exam

#include <bits/stdc++.h>

using namespace std;

const int NMAX = 1e5;

int n;
int a[NMAX + 5], b[NMAX + 5];
int vec[NMAX + 5];
int maxim[15][15];
int val[15];
int ans = 0;

void bkt (int k)
{
    if (k > n)
    {
        for (int i=1; i<=n; i++)
            val[i] = a[i];
        int curr = 0;
        for (int i=1; i<=n; i++)
        {
            for (int j=i; j<=vec[i]; j++)
                val[j] = max(val[j], maxim[i][vec[i]]);
            curr += (val[i] == b[i]);
        }
        ans = max(ans, curr);
    }
    for (int i=k; i<=n; i++)
    {
        vec[k] = i;
        bkt(k+1);
    }
}

int main()
{
    cin >> n;
    for (int i=1; i<=n; i++)
        cin >> a[i];
    for (int i=1; i<=n; i++)
        cin >> b[i];
    bkt(1);
    if (n <= 10)
    {
        for (int i=1; i<=n; i++)
        {
            maxim[i][i] = a[i];
            for (int j=i+1; j<=n; j++)
                maxim[i][j] = max(maxim[i][j-1], a[j]);
        }
        bkt(1);
        cout << ans;
        return 0;
    }
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22