Submission #22997

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Source Code Expand

    import java.util.*;
    import java.math.*;
    public class Main {
     
    /**
    * @param args
    */
    public static void main(String[] args) {
    	// TODO Auto-generated method stub
    	Scanner sc=new Scanner(System.in);
    	// while(sc.hasNext()) {
    	int n=sc.nextInt();
    	int i;
    	int x[]=new int [n];
    	int y[]=new int [n];
    	for(i=0;i<n;i++) {
    		x[i]=sc.nextInt();
    		y[i]=sc.nextInt();
    	}
    	
    	int j;
    	double ans=0;
    	for(i=0;i<n;i++) {
    		for(j=i+1;j<n;j++) {
    			if(ans<Math.sqrt((x[j]-x[i])*(x[j]-x[i])+(y[j]-y[i])*(y[j]-y[i]))) {
    				ans=Math.sqrt((x[j]-x[i])*(x[j]-x[i])+(y[j]-y[i])*(y[j]-y[i]));
    			}
    		}
    	}
 
    // System.out.println("hoge");
    		System.out.println(ans);
    // }
    	}
}
    
    
    

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