Submission #1126231

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126231		damamila	Balloons (CEOI11_bal)	C++20	100 / 100	139 ms	8596 KiB

bal

#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);  
	int n;
	cin >> n;
	vector<pair<int, int>> balloons(n);
	for (int i = 0; i < n; i++) {
		int x, r;
		cin >> x >> r;
		balloons[i] = {x, r};
	}
	stack<pair<int, double>> s;
	vector<double> ans(n);
	for (int i = 0; i < n; i++) {
		double maxr = balloons[i].second;
		int bx = balloons[i].first;
		while (s.size()) {
			auto [ax, ar] = s.top();
			double br = ((bx-ax)*(bx-ax))/(4*ar);
			maxr = min(maxr, br);
			if (maxr > ar) {
				s.pop();
			} else {
				break;
			}
		}
		s.push({bx, maxr});
		ans[i] = maxr;
	}
	cout << fixed << setprecision(6);
	for (double i : ans) cout << i << " ";
	cout << endl;
}

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