program main

  implicit none

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