.....
package com.javarush.task.task18.task1808;
import java.io.*;
import java.util.*;
/*
Разделение файла
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
FileInputStream in = new FileInputStream(reader.readLine());
FileOutputStream out1 = new FileOutputStream(reader.readLine());
FileOutputStream out2 = new FileOutputStream(reader.readLine());
// ArrayList<Integer> main = new ArrayList<>();
// ArrayList<Integer> list1 = new ArrayList<>();
// ArrayList<Integer> list2 = new ArrayList<>();
byte[] buff = new byte[(in.available())];
int read = in.read(buff);
int read2 = read / 2;
if(in.available() % 2 == 0){
out1.write(buff, 0, read2);
out2.write(buff, read2, read);
}else{
out1.write(buff, 0, read2 + 1);
out2.write(buff, read2 + 2, read);
}
in.close();
out1.close();
out2.close();
}
}