Submission #1278998

#	Time	Username	Problem	Language	Result	Execution time	Memory
1278998		IBory	Exhibition (JOI19_ho_t2)	C++20	100 / 100	44 ms	1604 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define pii pair<int, int>
using namespace std;

const int MAX = 100007;
pii P[MAX];
int S[MAX], dp[MAX];

int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	int N, M;
	cin >> N >> M;
	for (int i = 0; i < N; ++i) {
		int z, v;
		cin >> z >> v;
		P[i] = { v, z };
	}
	for (int i = 0; i < M; ++i) cin >> S[i];
	sort(S, S + M);
	sort(P, P + N);
	
	int ans = 0;
	for (int a = N - 1, b = M - 1; a >= 0 && b >= 0; ) {
		if (P[a].second <= S[b]) {
			ans++;
			a--;
			b--;
		}
		else a--;
	}
	
	cout << ans;
	return 0;
}

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