program abc
	implicit none
    integer(16) :: a,b,c,x,y
    double precision :: d,e,f,g
 
	read(*,*) a,b,c
 
	d = sqrt(dble(a))
	e = sqrt(dble(b))
	f = sqrt(dble(c))
    g = d + e
  
    x = 4 * a * b
    y = (c - a - b) ** 2
    
	if(x == y) then
    	g = 1
        f = 1
    endif
     
    if(g < f) then
    	write(*,*) "Yes"
    else
    	write(*,*) "No"
    endif
    
end program abc