제출 #788465

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
788465		jmyszka2007	Exhibition (JOI19_ho_t2)	C++17	100 / 100	469 ms	9088 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;
template<class A, class B>
ostream& operator<<(ostream& o, const pair<A, B>& p) {
    return o << '(' << p.first << ", " << p.second << ')';
}
template<class T>
auto operator<<(ostream& o, const T& x) -> decltype(x.end(), o) {
    o << '{';
    bool first = true;
    for (const auto& e : x) {
        if (!first) {
            o << ", ";
        }
        o << e;
        first = false;
    }
    return o << '}';
}
#define DEBUG
#ifdef DEBUG
#define fastio()
#define debug(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'
#define check(x) if (!(x)) { cerr << "Check failed: " << #x << " in line " << __LINE__ << endl; exit(1); }
#else
#define fastio() ios_base::sync_with_stdio(0); cin.tie(0);
#define debug(...)
#define check(x) 
#endif
typedef long long ll;
#define pi pair<int, int>
#define pl pair<ll, ll>
#define st first
#define nd second
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
void solve() {
	int n, m;
	cin >> n >> m;
	vector<pi>tab;
	for(int i = 1; i <= n; i++) {
		int a, b;
		cin >> a >> b;
		tab.pb({a, b});
	}
	sort(all(tab));
	vi tab2;
	for(int i = 1; i <= m; i++) {
		int x;
		cin >> x;
		tab2.pb(x);
	}
	sort(all(tab2));
	int l = 0;
	int r = m;
	while(l < r) {
		int mid = (l + r + 1) / 2;
		int pop = 0;
		int j = 0;
		multiset<int>akt;
		int ans = 0;
		for(int i = m - mid; i < m; i++) {
			while(j < sz(tab) && tab[j].st <= tab2[i]) {
				if(tab[j].nd >= pop) {
					akt.insert(tab[j].nd);
				}
				j++;
			}
			if(akt.size()) {
				ans++;
				auto it = akt.find(*akt.begin());
				pop = *akt.begin();
				akt.erase(it);
			}
		}
		if(ans == mid) {
			l = mid;
		}
		else {
			r = mid - 1;
		}
	}
	cout << l << '\n';
}
int main() {
	fastio();
	int t;
	//cin >> t;
	t = 1;	
	while(t--) {
		solve();
	}
}

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