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 Fortran (GNU Fortran 9.2.1) (judge verdict: Accepted)

program prob39
    implicit none
    integer :: q,w,e
    read(*,*) q,w,e
    if(q==w .and. w==e)then
        write(*,*) 'Yes'
    else
        write(*,*) 'No'
    end if

    stop
contains
end program prob39