Submission #786098

#	Time	Username	Problem	Language	Result	Execution time	Memory
786098		12345678	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	130 ms	17180 KiB

Main

#include <bits/stdc++.h>

using namespace std;

int n, x, y, h;
stack<pair<int, int>> s;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    vector<pair<int, int>> v(n);
    for (auto &[x, y]:v) cin>>x>>y;
    sort(v.begin(), v.end());
    for (auto [x, y]:v)
    {
        if (s.empty())
        {
            s.push({x, y});
            continue;
        }
        if (s.top().second-y>=x-s.top().first) continue;
        while (!s.empty()&&y-s.top().second>=x-s.top().first) s.pop();
        s.push({x, y});
    }
    cout<<s.size();
}

• Subtask 1: 10 / 10
• Subtask 2: 23 / 23
• Subtask 3: 36 / 36
• Subtask 4: 31 / 31