https://www.acmicpc.net/problem/14681
import java.util.Scanner;
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 (y > 0)
System.out.println("2");
else
System.out.println("3");
}
sc.close();
}
}