제출 #1249011

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1249011		mirbek01	Mobile (BOI12_mobile)	C++20	8 / 100	1096 ms	8008 KiB

mobile

#include <bits/stdc++.h>

using namespace std;

double dist(double x, double y, double a, double b) {
    return sqrt((x - a) * (x - a) + (y - b) * (y - b));
}

signed main() {
    int n, L;
    cin >> n >> L;

    vector <int> x(n), y(n);
    for (int i = 0; i < n; i++) {
        cin >> x[i] >> y[i];
    }

    auto calc = [&](double a, double b) {
        double res = dist(a, b, x[0], y[0]);
        for (int i = 1; i < n; i++) {
            res = min(res, dist(a, b, x[i], y[i]));
        }
        return res;
    };  

    double ans = 0;

    for (double i = 0; i <= L; i += 0.001) {
        ans = max(ans, calc(i, 0));
    }

    cout << fixed << setprecision(3) << ans << endl;
}

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