Submission #1036765

#	Time	Username	Problem	Language	Result	Execution time	Memory
1036765		andrewp	Exhibition (JOI19_ho_t2)	C++14	100 / 100	37 ms	4448 KiB

joi2019_ho_t2

//Dedicated to my love, ivaziva
#include <bits/stdc++.h>
using namespace std;

using pii = pair<int, int>;
using ll = int64_t;

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define dbg(x) cerr << #x << ": " << x << '\n';

int32_t main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	cerr.tie(nullptr);

	int n, m;
	cin >> n >> m;
	vector<pii> a(n);
	for (int i = 0; i < n; i++) {
		cin >> a[i].first >> a[i].second;
		swap(a[i].first, a[i].second);
	}
	sort(all(a));
	vector<int> b(m);
	for (int i = 0; i < m; i++) {
		cin >> b[i];
	}
	sort(all(b));
	int ans = 0, pt1 = n - 1, pt2 = m - 1;
	// vector<pii> dp(n);
	while (pt1 >= 0 && pt2 >= 0) {
		if (b[pt2] >= a[pt1].second) {
			pt2--;
			ans++;
		}
		pt1--;
	}
	cout << ans << '\n';
}

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