Submission #1097520

#	Time	Username	Problem	Language	Result	Execution time	Memory
1097520		Nurislam	Exhibition (JOI19_ho_t2)	C++17	100 / 100	65 ms	5712 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp> 
//#include <ext/pb_ds/tree_policy.hpp>  
using namespace std;
//using namespace __gnu_pbds;z
#define pb push_back
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long
//#define ordst tree<pair<int,int>,  null_type,  less<pair<int,int>>,  rb_tree_tag ,  tree_order_statistics_node_update >
//#define double long double 
template <class F, class _S>
bool chmin(F &u, const _S &v){
	bool flag = false;
	if ( u > v ){
		u = v; flag |= true;
	}
	return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
	bool flag = false;
	if ( u < v ){
		u = v; flag |= true;
	}
	return flag;
}

const int N = (1<<18) +1, inf = 1e18+200;
//int mod = 998244353;
//int mod = 1000000007;
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//#define rnd(l, r) uniform_int_distribution <int> (l, r)(rng)

void solve(){
	int n, m;
	cin >> n >> m;
	vector<array<int,2>> pic(n);
	for(auto &[i, j]:pic)cin >> j >> i;
	vector<int> siz(m);
	for(int &i:siz)cin >> i;
	sort(all(pic));sort(all(siz));
	
	auto ok = [&](int x) -> bool{
		int it = 0;
		for(int i = m-x; i < m; i ++){
			while(it < n && siz[i] < pic[it][1])it++;
			if(it == n)return false;
			it++;
		}
		return true;
	};
	
	int l = 0, r = min(n,m)+1;
	while(l+1 < r){
		int mid = (l+r)>>1;
		if(ok(mid))l = mid;
		else r = mid;
	}
	cout << l << '\n';
}

 
signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	int tt = 1;
	//cin >> tt;
	while(tt--){
		solve();
	}
}

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