Submission #414182

#	Time	Username	Problem	Language	Result	Execution time	Memory
414182		Farrius	Balloons (CEOI11_bal)	C++11	100 / 100	771 ms	6120 KiB

bal

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;

int main () {
	int n;
	cin >> n;
	stack<pair<ld, ld>> radios;
	for (int i = 0; i < n; i++) {
		ld x, r;
		cin >> x >> r;
		while (!radios.empty()) {
			ld x1, r1;
			tie(x1, r1) = radios.top();
			r = min(r, (x - x1) * (x - x1)/(4 * r1));
			if (r >= r1) radios.pop();
			else break;
		}
		radios.push(make_pair(x, r));
		cout << fixed << setprecision(6) << r << '\n';
	}
}

• 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