백준 1085번 자바 : 직사각형에서 탈출

import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int w = in.nextInt();
		int h = in.nextInt();

		int[] array = new int[4];
		array[0] = x;
		array[1] = y;
		array[2] = w-x;
		array[3] = h-y;

		Arrays.sort(array);

		System.out.println(array[0]);
	}

}