4344 평균은 넘겠지

https://www.acmicpc.net/problem/4344

package study;

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String a = sc.nextLine();

String[] arr= new String[Integer.parseInt(a)];

for (int i=0;i<arr.length;i++)

{

arr[i]=sc.nextLine();

}

sc.close();

for (int i=0;i<arr.length;i++)

{

String[] innerarr = arr[i].split(" ");

int sum=0;

double average=0;

for (int j=1;j<innerarr.length;j++)

{

sum+=Integer.parseInt(innerarr[j]);

}

average = (double) sum / Integer.parseInt(innerarr[0]);

int count=0;

for (int j=1;j<innerarr.length;j++)

{

if ((double) Integer.parseInt(innerarr[j]) > average)

{

count++;

}

}

System.out.printf("%2.3f%%\n", (double) count / Integer.parseInt(innerarr[0])*100);

}

}

}