Write a program which reads three integers a, b and c, and prints "Yes" if a < b < c, otherwise "No".

Constraints

* 0 ≤ a, b, c ≤ 100

Input

Three integers a, b and c separated by a single space are given in a line.

Output

Print "Yes" or "No" in a line.

Examples

Input

1 3 8


Output

Yes


Input

3 8 1


Output

No
a = raw_input()
a = a.split()
for i in range(0,len(a)):
    a[i] = int(a[i])
b = sorted(a)
for i in range(0,len(a)):
    if(a[i] != b[i] or (i != (len(a) - 1) and a[i] == a[i+1])):
        print 'No'
        break
if(i == len(a)-1):
    print 'Yes'
