Submission #441032

#	Time	Username	Problem	Language	Result	Execution time	Memory
441032		penguinhacker	Balloons (CEOI11_bal)	C++14	100 / 100	261 ms	5452 KiB

bal

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

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout << fixed << setprecision(3);
	int n;
	cin >> n;
	vector<pair<int, double>> v;
	while(n--) {
		int x;
		double r;
		cin >> x >> r;
		while(v.size()) {
			double dx=x-v.back().first;
			r=min(r, dx*dx/(4*v.back().second));
			if (r>=v.back().second)
				v.pop_back();
			else
				break;
		}
		cout << r << "\n";
		v.emplace_back(x, r);
	}
	return 0;
}

• 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