whats the problem in my code
package com.codegym.task.task04.task0425;
/*
Target locked!
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
//write your code here
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String num1 = reader.readLine();
String num2 = reader.readLine();
int a = Integer.parseInt(num1);
int b = Integer.parseInt(num1);
if( a>0 && b>0)
{
System.out.println("1");
}
else if( a<0 && b>0)
{
System.out.println("2");
}
else if( a<0 && b<0)
{
System.out.println("3");
}
else if( a>0 && b<0)
{
System.out.println("4");
}
}
}