Submission #2559470

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Source Code Expand

import java.io.File;
import java.io.IOException;
import java.util.Scanner;

/*
 * メモ
 * Scanner:nextは空白か改行までの単語
 * String[][] c = new String[h][w];
 * TemplateMain,"template_input.txt"
 */

public class Main {
	
	public static void printlnYN(boolean b){
		if(b) System.out.println("Yes");
		else System.out.println("No");
	}

	public static void main(String[] args) throws IOException {
		
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
    	int N = sc.nextInt();
    	int p[][] = new int[N][2];
    	
    	for(int i = 0; i < N; i++){
    		p[i][0] = sc.nextInt();
    		p[i][1] = sc.nextInt();
    	}
    	
    	double m = 0;
    	for(int i = 0; i < N - 1; i++){
    		for(int j = i + 1; j < N; j++){
    			double mm = Math.pow((p[i][0]-p[j][0])*(p[i][0]-p[j][0]) + (p[i][1]-p[j][1])*(p[i][1]-p[j][1]), (1.0/2));
    			if(mm > m){
    				m = mm;
    			}
    		}
    	}
    	
    	System.out.println(m);
	}

}

Submission Info

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