Submission #756071

#	Time	Username	Problem	Language	Result	Execution time	Memory
756071		SanguineChameleon	Sails (IOI07_sails)	C++17	50 / 100	1080 ms	1364 KiB

sails

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

void just_do_it();

int main() {
	#ifdef KAMIRULEZ
		freopen("kamirulez.inp", "r", stdin);
		freopen("kamirulez.out", "w", stdout);
	#endif
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	just_do_it();
	return 0;
}

const int maxn = 1e5 + 20;
pair<int, int> a[maxn];

vector<pair<int, int>> q;

void add(int val, int cnt) {
	if (!cnt) {
		return;
	}
	if (!q.empty() && q.back().first == val) {
		q.back().second += cnt;
	}
	else {
		q.emplace_back(val, cnt);
	}
}

void just_do_it() {
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i].first >> a[i].second;
	}
	sort(a + 1, a + n + 1);
	for (int i = 1; i <= n; i++) {
		add(0, a[i].first - a[i - 1].first);
		vector<pair<int, int>> nxt;
		while (a[i].second) {
			if (q.back().second >= a[i].second) {
				nxt.emplace_back(q.back().first, q.back().second - a[i].second);
				nxt.emplace_back(q.back().first + 1, a[i].second);
				a[i].second = 0;
			}
			else {
				nxt.emplace_back(q.back().first + 1, q.back().second);
				a[i].second -= q.back().second;
			}
			q.pop_back();
		}
		reverse(nxt.begin(), nxt.end());
		for (auto p: nxt) {
			add(p.first, p.second);
		}
	}
	long long res = 0;
	for (auto p: q) {
		res += 1LL * p.first * (p.first - 1) / 2 * p.second;
	}
	cout << res;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10