[백준] 11758번 : CCW - Java(자바)

https://www.acmicpc.net/problem/11758

import java.util.Scanner;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        int x1=s.nextInt(), y1=s.nextInt();
        int x2=s.nextInt(), y2=s.nextInt();
        int x3=s.nextInt(), y3=s.nextInt();
        
        int a=x1*y2+x2*y3+x3*y1;
        int b=x2*y1+x3*y2+x1*y3;
        
        if(a-b>0) System.out.print("1");
        else if(a-b<0) System.out.print("-1");
        else System.out.print("0");
    }
}