Submission #435907

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Source Code Expand

import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner scanner =new Scanner(System.in);
		int N = scanner.nextInt();
		int x[] = new int[N];
		int y[] = new int[N];
		int a;
		double max = 0;

		for(int i = 0; i < N; i++){
			x[i] = scanner.nextInt();
			y[i] = scanner.nextInt();
		}
		for(int i = 0; i < N; i++){
			for(int j = i + 1; j < N; j++){	
				a = (x[i] - x[j]) * (x[i] - x[j]) + (y[i] - y[j]) * (y[i] - y[j]);
				if(a > max){
					max = a;
				}
			}
		}
		System.out.println(Math.sqrt(max));
	}
}

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