Solution

Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); if(a > 0 && b > 0){ System.out.println("1"); } 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"); }