I take N and made sure it cant be negative, don't understand what is wrong?
package com.codegym.task.task05.task0532;
import java.io.*;
/*
Task about algorithms
*/
public class Solution {
public static void main(String[] args) throws Exception {
InputStream inputStream = System.in;
Reader inputStreamReader = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
int maximum=0, ia=0, N=0;
String sa;
String show = bufferedReader.readLine();
N = Integer.parseInt(show);
if (N>0)
{
for (int i=0 ; N>i ; i++){
sa = bufferedReader.readLine();
ia = Integer.parseInt(sa);
maximum = (ia>maximum) ? ia : maximum;
}
}
System.out.println(maximum);
}
}