Segment - MarisaOJ: Marisa Online Judge

Given two line segments,

$AB$ and

$CD$ , lying on the number line. Line segment

$AB$ extends from point

$a$ to point

$b$ , and line segment

$CD$ extends from point

$c$ to point

$d$ . Check if the two line segments have a common point. ### Input - A single line containing four integers

$a, b, c, d$ . ### Output - If the two line segments have a common point, print YES. Otherwise, print NO. ### Constraints -

$1 \le a \le b \le 1000$ -

$1 \le c \le d \le 1000$ ### Sample test

$1 2 2 3$

Output:

$YES$

Topic

Introduction

Rating

800

Solution (0)

Solution