please check my code. it's print output is correct. but task not to meet ,what is a wrong

package com.codegym.task.task05.task0532; import java.io.*; import java.util.*; /* Task about algorithms */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); // Scanner sc= new Scanner(System.in); int maximum =Integer.parseInt(reader.readLine()) ; // int m=sc.nextInt(); int N[]=new int[maximum]; for(int i=0; i<maximum; i++){ N[i]=Integer.parseInt(reader.readLine()); //System.out.println(n[i]); } Arrays.sort(N); // System.out.println(Arrays.toString(n)); System.out.println(N[maximum-1]); } //write your code here } /* int[] n= new int[m]; // System.out.println(n); for(int i=0; i<m; i++){ Arrays.sort(n); // System.out.println(n); } */