Submission #521289

#	Time	Username	Problem	Language	Result	Execution time	Memory
521289		emon_2007	Exhibition (JOI19_ho_t2)	C++17	100 / 100	149 ms	5540 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int MAX_N = 1000010;

int32_t main()
{
    int n, m, ans = 0;
    cin >> n >> m;
    pair<int, int> a[n + 1];
    for(int i = 1; i <= n; i++)
    {
        cin >> a[i].first >> a[i].second;
        swap(a[i].first, a[i].second);
    }
    int b[m + 1];
    for(int i = 1; i <= m; i++)
    {
        cin >> b[i];
    }
    sort(a + 1, a + n + 1);
    sort(b + 1, b + m + 1);
    reverse(a + 1, a + n + 1);
    reverse(b + 1, b + m + 1);
    int j = 1;
    for(int i = 1; i <= m; i++)
    {
        while(j <= n and a[j].second > b[i])
        {
            j++;
        }
        ans += (j <= n ? 1 : 0);
        j++;
    }
    cout << ans;
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50