import java.util.Scanner; public class Main{ public static void main(String args[]){ Scanner sc = new Scanner(System.in); int x = sc.nextInt(); int y = sc.nextInt(); if( x > 0){ if( y > 0 ){ System.out.println("1"); }else{ System.out.println("4"); } }else if(x 0){ System.out.println("2"); }else{ System.out.println("3"); } } } } if 로 간단하게 해결 가능하다.