[백준_JAVA] 1085 직사각형에서 탈출

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int x, y, w, h;
		int result, yMin, xMin;
		
		x = sc.nextInt();
		y = sc.nextInt();
		w = sc.nextInt();
		h = sc.nextInt();
		
		yMin=(h-y)<y?(h-y):y;
		xMin=(w-x)<x?(w-x):x;
		result=yMin<xMin?yMin:xMin;
		
		System.out.println(result);
	}
}