제출 #1283808

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1283808		Jawad_Akbar_JJ	Balloons (CEOI11_bal)	C++20	100 / 100	102 ms	8172 KiB

bal

#include <iostream>
#include <iomanip>
#include <stack>

using namespace std;
long double x[1<<18], r[1<<18];

int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	cout<<fixed<<setprecision(3);

	int n;
	cin>>n;

	for (int i=1;i<=n;i++)
		cin>>x[i]>>r[i];
	
	stack<int> stk;
	stk.push(1);

	for (int i=2;i<=n;i++){
		while (stk.size() > 0){
			int id = stk.top();
			long double R = (x[i] - x[id]);
			R *= R;
			R = min(R, r[id] * r[i] * 4);
			R = R / (r[id] * 4);
			r[i] = R;
			
			if (R < r[id])	
				break;
			stk.pop();
		}
		// while (stk.size() > 0 and r[stk.top()] <= r[i])
		// 	stk.pop();
		stk.push(i);
	}
	for (int i=1;i<=n;i++)
		cout<<r[i]<<'\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