Submission #1280971

#	Time	Username	Problem	Language	Result	Execution time	Memory
1280971		trideser	Ski 2 (JOI24_ski2)	C++20	0 / 100	1 ms	572 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long

int main() {
	ll N, K;
	cin >> N >> K;
	if(K < 100000) return 1;
	vector<pair<ll, ll>> ver(N);
	for(ll i = 0; i < N; i++) {
		ll a, b;
		cin >> a >> b;
		ver[i] = make_pair(a, b);
	}
	sort(ver.begin(), ver.end());
	ll ret = 0;
	for(ll i = 1; i < N && ver[i].first == ver[0].first; i++) {
		ver[i].first++;
		ret += K;
	}
	ll nx_free = 0;
	multiset<pair<ll, ll>> free;
	vector<ll> minprice(302, 0x7fffffffffffffff);
	ll xxx = 1;
	for(pair<ll, ll> p : ver) {
		free.insert(make_pair(p.first, xxx++));
		for(ll i = p.first + 1; i < 302; i++) {
			minprice[i] = min(minprice[i], p.second);
		}
	}
	//for(pair<ll, ll> a : free) cout << a.first << " " << a.second << "\t";
	//cout << "\n";
	vector<pair<ll, ll>> v;
	for(pair<ll, ll> p : ver) {
		v.push_back(make_pair(-p.second, p.first));
	}
	sort(v.begin(), v.end());
	for(pair<ll, ll> p : v) {
		//cout << -p.first << " " << p.second << "\n";
		if(p.second == ver[0].first) continue;
		//cout << "s";
		if(free.lower_bound(make_pair(p.second, 0ll)) != free.begin()) {
			free.erase(--free.upper_bound(make_pair(p.second, 0ll)));
		}
		else {
		//	cout << "b\n";
			ret += minprice[p.second];
		}
	//for(pair<ll, ll> a : free) cout << a.first << " " << a.second << "\t";
	//cout << "\n";
	}

	cout << ret;
	return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 33
• Subtask 5: 0 / 27
• Subtask 6: 0 / 14