Submission #572071

#	Time	Username	Problem	Language	Result	Execution time	Memory
572071		1ne	Exhibition (JOI19_ho_t2)	C++14	10 / 100	1089 ms	468 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
using namespace std;
const long long mxn = 1e12;
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	long long n,m;cin>>n>>m;
	vector<pair<long long ,long long>>arr(n);
	for (int i = 0;i<n;++i){
		cin>>arr[i].second>>arr[i].first;
	}
	vector<long long >brr(m);
	for (int i = 0;i<m;++i)cin>>brr[i];
	sort(brr.begin(),brr.end());
	sort(arr.begin(),arr.end());
	function<long long(int,int)> solve = [&](int cur,int pos){
		if (cur==n)return 0LL;
		if (pos==m)return 0LL;
		long long ans = solve(cur + 1,pos);
		if (pos + 1 < m)
			ans = max(ans,solve(cur,pos + 1));
		if (pos < m && brr[pos]>=arr[cur].second){
			ans = max(ans,solve(cur + 1,pos + 1) + 1);
		}
		return ans;
	};
	long long ans = solve(0,0);
	cout<<ans<<'\n';
	return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50