Problem:
Score : 100 points

Problem Statement

You are given three integers A, B and C.

Determine if there exists an equilateral triangle whose sides have lengths A, B and C.

Constraints

All values in input are integers.

1 \leq A,B,C \leq 100

Input

Input is given from Standard Input in the following format:

A B C

Output

If there exists an equilateral triangle whose sides have lengths A, B and C, print Yes; otherwise, print No.

Sample Input 1

2 2 2

Sample Output 1

Yes

There exists an equilateral triangle whose sides have lengths 2, 2 and 2.

Sample Input 2

3 4 5

Sample Output 2

No

There is no equilateral triangle whose sides have lengths 3, 4 and 5.

Solution in Julia (0.5.0) (judge verdict: Accepted)

function exawizards2019_A()

    # STEP.01
    # read out the given integers
    A, B, C = Base.parse.(Base.split(Base.readline(Base.STDIN)))

    # STEP.02
    # determine if there exists an equilateral triangle whose sides have lengths A, B and C.
    if Base.isequal(A, B) && Base.isequal(B, C)
        Base.println(Base.STDOUT, "Yes")
    else
        Base.println(Base.STDOUT, "No")
    end

    # STEP.TRUE_END
    return Base.nothing

end

Main.exawizards2019_A()