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 Python (3.4.3) (judge verdict: Accepted)

# 1
# https://atcoder.jp/contests/yahoo-procon2019-qual/tasks/yahoo_procon2019_qual_a
if False:
    N,K=map(int,input().split())
    print('YES' if N-K-(K-1)>=0 else 'NO')

# 2
# https://atcoder.jp/contests/exawizards2019/tasks/exawizards2019_b
if False:
    N=int(input())
    S=input()
    print('Yes' if S.count('R')>S.count('B') else 'No')

# 3
# https://atcoder.jp/contests/exawizards2019/tasks/exawizards2019_a
if False:
    print('Yes' if len(set(input().split()))==1 else 'No')

# 4
# https://atcoder.jp/contests/tenka1-2019-beginner/tasks/tenka1_2019_b
if False:
    N=int(input())
    S=input()
    K=int(input())
    r=S[K-1]
    ans=''
    for s in S:
        if s==r: ans+=s
        else: ans+='*'
    print(ans)

# 5
# https://atcoder.jp/contests/tenka1-2019-beginner/tasks/tenka1_2019_a
if True:
    A,B,C=map(int,input().split())
    if A>B: A,B=B,A
    print('Yes' if A<=C<=B else 'No')