Problem:
Score : 100 points

Problem Statement

You are given three integers A, B and C.
Determine whether C is not less than A and not greater than B.

Constraints

-100≤A,B,C≤100

A, B and C are all integers.

Input

Input is given from Standard Input in the following format:

A B C

Output

If the condition is satisfied, print Yes; otherwise, print No.

Sample Input 1

1 3 2

Sample Output 1

Yes

C=2 is not less than A=1 and not greater than B=3, and thus the output should be Yes.

Sample Input 2

6 5 4

Sample Output 2

No

C=4 is less than A=6, and thus the output should be No.

Sample Input 3

2 2 2

Sample Output 3

Yes

Solution in Ruby (2.3.3) (judge verdict: Runtime Error)

N, K = gets.split.map(&:to_i)

num_map = Hash.new(0)

N.times do
  a, b = gets.split.map(&:to_i)
  num_map[a] += b
end

num_count = 0
num_map.keys.sort do |num|
  if num_count + num_map[num] >= K
    puts num
    break
  end

  num_count += num_map[num]
end