Submission #715516

#	Time	Username	Problem	Language	Result	Execution time	Memory
715516		Koful123	Exhibition (JOI19_ho_t2)	C++17	100 / 100	63 ms	5604 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define ff first
#define ss second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

void solve(){
	
	int n,m;
	cin >> n >> m;

	vector<pair<int,int>> v(n);
	for(auto &[x,y] : v){
		cin >> x >> y;
	}

	sort(v.begin(),v.end(),[&](auto x,auto y){
		if(x.ss != y.ss) return x.ss > y.ss;
		return x.ff > y.ff;
	});
	
	vector<int> f(m);
	for(int i = 0; i < m; i++){
		cin >> f[i];
	}

	int ans = 0,p = 0,last = 0;

	sort(f.rbegin(), f.rend());
	for(int i = 0; i < m; i++){
		while(p < n && v[p].ff > f[i]){
			++p;
		}
		if(p != n){
			++ans; ++p;
		}
	}

	cout << ans << endl;
}
 
signed main(){ 

	ios::sync_with_stdio(0);
	cin.tie(0);
 
	int t = 1;
//	cin >> t;
 
	while(t--)
		solve();
 	
	return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'void solve()':
joi2019_ho_t2.cpp:31:20: warning: unused variable 'last' [-Wunused-variable]
   31 |  int ans = 0,p = 0,last = 0;
      |                    ^~~~

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