помогите
package com.javarush.task.task04.task0428;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
/*
Положительное число
*/
public class Solution {
public static void main(String[] args) throws Exception {
//напишите тут ваш код
InputStream inputStream = System.in;
Reader inputStreamReader = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String n = bufferedReader.readLine();
int a = Integer.parseInt(n);
String nm = bufferedReader.readLine();
int b = Integer.parseInt(nm);
String nmb = bufferedReader.readLine();
int c = Integer.parseInt(nmb);
if ( a > 0 && b > 0 && c > 0){
System.out.println("3");}
else if (a < 0 && b < 0 && c < 0)
{
System.out.println("0");
}
else if ( a < 0 && b > 0 && c > 0 || a > 0 && b > 0 && c < 0 || a > 0 && b < 0 && c > 0){
System.out.println("2");
}
else if (a < 0 && b < 0 && c > 0 || a < 0 && b > 0 && c < 0 || a > 0 && b < 0 && c < 0){
System.out.println("1");
}
else {
System.out.println();
}}
}