```    Program g13ajfe

!     G13AJF Example Program Text

!     Mark 26.1 Release. NAG Copyright 2016.

!     .. Use Statements ..
Use nag_library, Only: g13ajf, nag_wp
!     .. Implicit None Statement ..
Implicit None
!     .. Parameters ..
Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
Real (Kind=nag_wp)               :: c, rms
Integer                          :: i, ifail, ifv, ist, iw, kfc, nfv,    &
npar, nst, nx, pp, qp
!     .. Local Arrays ..
Real (Kind=nag_wp), Allocatable  :: fsd(:), fva(:), par(:), st(:), w(:), &
x(:)
Integer                          :: isf(4), mr(7)
!     .. Intrinsic Procedures ..
Intrinsic                        :: max
!     .. Executable Statements ..
Write (nout,*) 'G13AJF Example Program Results'
Write (nout,*)

!     Skip heading in data file

!     Read in problem size etc
Read (nin,*) nx, nfv, kfc, c

!     Calculate NPAR and various array lengths
npar = mr(1) + mr(3) + mr(4) + mr(6)
ist = mr(4) + mr(7) + mr(2) + mr(5) + mr(3) + max(mr(1),mr(6)*mr(7))
ifv = max(1,nfv)
qp = mr(6)*mr(7) + mr(3)
pp = mr(4)*mr(7) + mr(1)
iw = 6*nx + 5*npar + qp*(qp+11) + 3*pp + 7
Allocate (par(npar),x(nx),st(ist),fva(ifv),fsd(ifv),w(iw))

ifail = 0
Call g13ajf(mr,par,npar,c,kfc,x,nx,rms,st,ist,nst,nfv,fva,fsd,ifv,isf,w, &
iw,ifail)

!     Display results
Write (nout,99999) 'The residual mean square is ', rms
Write (nout,*)
Write (nout,99998) 'The state set consists of ', nst, ' values'
Write (nout,99997) st(1:nst)
Write (nout,*)
Write (nout,99996) 'The ', nfv,                                          &
' forecast values and standard errors are -'
Write (nout,99995)(fva(i),fsd(i),i=1,nfv)

99999 Format (1X,A,F9.2)
99998 Format (1X,A,I1,A)
99997 Format (1X,4F11.4)
99996 Format (1X,A,I2,A)
99995 Format (10X,2F10.2)
End Program g13ajfe
```