제출 #1132417

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1132417		vicvic	Balloons (CEOI11_bal)	C++20	0 / 100	104 ms	2584 KiB

bal

#include <iostream>
#include <fstream>
#include <stack>
#include <iomanip>
#define double long double
using namespace std;
int n;
stack <pair <int, int>> stiva;
int main()
{
    ios :: sync_with_stdio (0);
    cin.tie (nullptr);
    cin >> n;
    for (int i=1;i<=n;i++)
    {
        int x, y;
        cin >> x >> y;
        double r=y;
        while (!stiva.empty())
        {
            double len=(stiva.top().first-x)*(stiva.top().first-x);
            r=min (r, len/(4*stiva.top().second));
            if (r>stiva.top().second-1e-10)
            {
                stiva.pop();
            }
            else break;
        }
        cout << fixed << setprecision (3) << r << "\n";
        stiva.push ({x, r});
    }
    return 0;
}

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