Submission #991195

#	Time	Username	Problem	Language	Result	Execution time	Memory
991195		goats_9	Sails (IOI07_sails)	C++17	40 / 100	1081 ms	11804 KiB

sails

/* Author: goats_9 */

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

using ll = long long;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int n;
	cin >> n;
	vector<array<ll, 2>> a(n);
	for (int i = 0; i < n; i++) cin >> a[i][0] >> a[i][1];
	sort(a.begin(), a.end());
	set<array<ll, 2>> st;
	int mxl = 0;
	for (int i = 0; i < n; i++) {
		while (mxl < a[i][0]) {
			st.insert({0, -mxl});
			mxl++;
		}
		int j = a[i][1];
		vector<array<ll, 2>> b;
		while (j--) {
			b.push_back(*st.begin());
			st.erase(st.begin());
		}
		for (auto br : b) {
			br[0]++;
			st.insert(br);
		}
	}
	ll ans = 0;
	for (auto [u, v] : st) ans += u*(u - 1)/2;
	cout << ans;
	return 0;
}

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