help?
package de.codegym.task.task05.task0532;
import java.io.*;
/*
Aufgabe zu Algorithmen
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
//schreib hier deinen Code----------------------------------------------
int a = Integer.parseInt(reader.readLine());
int maximum =0 ;
int n =0;
for (int i = 0; i < a ; i++) {
n= Integer.parseInt(reader.readLine());
if( n >maximum)
maximum= n;
}
System.out.println(maximum);
}
}