Problem:
Range

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

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.

Constraints

0 ≤ a, b, c ≤ 100

Sample Input 1

1 3 8

Sample Output 1

Yes

Sample Input 2

3 8 1

Sample Output 2

No

Solution in Ruby (judge verdict: Accepted)

def main()
    num_array = gets.split.map(&:to_i)
    (num_array.size-1).times do |index|
        if(num_array[index] >= num_array[index+1])
            return "No"
        end
    end
    return "Yes"
end

puts(main)