WHY
package com.codegym.task.task05.task0532;
import java.io.*;
/*
Task about algorithms
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int N;
int maximum=1;
while (true) {
N = Integer.parseInt(reader.readLine());
if(N<=0)
break;
maximum = maximum > N ? maximum : N;
}
System.out.println(maximum);
}
}