Submission

Score: 100

User: .n0t_gloomy.

Problemset: จุดตัดบนกราฟ

Language: cpp

Time: 0.058 second

Submitted On: 2026-04-04 20:46:57

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
    int n;
    cin>>n;
    priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>> pq;
    vector<int> v(n);
    for (int i = 0; i < n; i++) cin>>v[i];
    for (int i = 1; i < n; i++)
    {
        int a = v[i-1], b = v[i];
        if (a < b)
        {
            pq.push({a,1});
            pq.push({b,-1});
        }
        else
        {
            pq.push({b,1});
            pq.push({a,-1});
        }
    }
    int cur = 0, mx = 0;
    while (!pq.empty())
    {
        auto [val,delta] = pq.top();
        pq.pop();
        cur += delta;
        mx = max(mx,cur);
    }
    cout<<mx<<"\n";
}