program example
	implicit none

	integer(8) a,b,c

	read(*,*) a,b,c
    
    if(dble(c)>dble(a)+dble(b)+2*sqrt(dble(a)*dble(b))) then
    	write(*,*) "Yes"
        goto 1
    else
    	write(*,*) "No"
        goto 1
        
    end if

1 end program example