Submission #3426538

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Source Code Expand

import java.util.*;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        int[] x = new int[N];
        int[] y = new int[N];

        for (int i = 0; i < N; i++) {
            x[i] = sc.nextInt();
            y[i] = sc.nextInt();
        }

        double max = 0;
        for (int i = 0; i < N; i++) {
            for (int j = i; j < N; j++) {
                double newLength = Math.sqrt((x[i]-x[j])*(x[i]-x[j]) + (y[i]-y[j])*(y[i]-y[j]));
                if (newLength > max) {
                    max = newLength;
                }
            }
        }

        System.out.println(max);
    }
}

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