program main

  implicit none

  integer(8) :: a, b, c
  real(8) :: ar, br, cr,i, j ,k
  
  read(*,*) a, b, c
  ar = real(a,kind=8) 
  br = real(b,kind=8) 
  cr = real(c,kind=8) 
  !if ( (sqrt( real(a) ) + sqrt( real(b) )) < sqrt( real(c) ) ) then
  !  print*, "Yes"
  !else
  !  print*, "No"
  !end if
  i = cr**2
  j = -2*(ar+br)*cr
  k = (ar-br)**2
  if ( (i+j+k)>0 ) then
    print*, "Yes"
  else
    print*, "No"
  end if
  
  
end program main
