Problem:
Score : 100 points

Problem Statement

There are three houses on a number line: House 1, 2 and 3, with coordinates A, B and C, respectively.
Print Yes if we pass the coordinate of House 3 on the straight way from House 1 to House 2 without making a detour, and print No otherwise.

Constraints

0\leq A,B,C\leq 100

A, B and C are distinct integers.

Input

Input is given from Standard Input in the following format:

A B C

Output

Print Yes if we pass the coordinate of House 3 on the straight way from House 1 to House 2 without making a detour, and print No otherwise.

Sample Input 1

3 8 5

Sample Output 1

Yes

We pass the coordinate 5 on the straight way from the house at coordinate 3 to the house at coordinate 8.

Sample Input 2

7 3 1

Sample Output 2

No

Sample Input 3

10 2 4

Sample Output 3

Yes

Sample Input 4

31 41 59

Sample Output 4

No

Solution in Go (1.6) (judge verdict: Wrong Answer)

package main

import (
	"fmt"
)

func main() {
	a, b, c := SingleInt(), SingleInt(), SingleInt()
	var x1, x2 int
	if a < b {
		x1 = a
		x2 = b
	} else {
		x1 = b
		x2 = a
	}

	if x1 < c && x2 > c {
		fmt.Printf("%#v\n", "Yes")
		return
	}
	fmt.Printf("%#v\n", "No")
}

func SingleInt() int {
	var n int
	fmt.Scan(&n)
	return n
}