Submission #491766

#	Time	Username	Problem	Language	Result	Execution time	Memory
491766		VodkaInTheJar	Money (IZhO17_money)	C++14	0 / 100	0 ms	204 KiB

money

#include <bits/stdc++.h>
#define endl '\n'

using namespace std;

const int maxn = 1e6 + 3;

int n;
int a[maxn];
void read()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
}

set <int> s;
void solve()
{
    int ans = 0;
    for (int i = 1; i <= n; )
    {
        ans++;
        auto it = s.lower_bound(a[i]);
        bool is = false;
        for (int j = i+1; j <= n; j++)
        {
            auto it1 = s.lower_bound(a[j]);
            if (a[j] < a[j-1] || !(it == s.end() || it1 == it || it1 == next(it)))
            {
                for (int k = i; k < j; k++)
                    s.insert(a[k]);

                is = true;
                i = j;
                break;
            }
        }

        if (!is)
            break;
    }

    cout << ans << endl;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    read();
    solve();
}


/*
6
3 6 4 5 1 2
*/

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55