Follow the task and return only the requested answer, without explanation or Markdown fences.
You will read a prefix of a small scope language.
Every block, regardless of its kind, creates a local scope.
Statements are processed once, from top to bottom.
A let statement binds a variable in the current scope.
The nearest still-open scope containing the variable determines its value.
Bindings in closed scopes are no longer visible.
A nop statement has no effect.
The final probe marks the observation point.
Open blocks at the end of this prefix are intentional.
Do not complete or repair the program.
Return only the decimal integer visible at the final probe.

SYNTAX
The kind keywords are unit for unit, func for func, and area for area. Each creates a local scope.
Open a block with KIND NAME on one line.
Close the innermost open block with end on its own line.
KIND is one of unit, func, area; NAME is n_ followed by exactly eight lowercase letters and is unique in the program.
A binding statement (let) is let VARIABLE VALUE. VARIABLE is x_ followed by one letter a through f; VALUE is a four digit integer from 1000 through 9999.
Within one scope a variable is bound at most once. Inner bindings hide outer bindings until their scope closes.
A no-effect statement (nop) is nop PAYLOAD. PAYLOAD is p_ followed by eight lowercase letters.
The observation marker is probe PROBE_ID VARIABLE. PROBE_ID is q_ followed by eight lowercase letters.
Use one statement per line. Indentation has no meaning; scope is determined solely by explicit opening and closing lines.

EXAMPLES
Example 1
Program prefix:
let x_b 4122
let x_a 2890
func n_xubbtrah
let x_a 3834
nop p_gwsvasbv
end
unit n_svuhbhuc
let x_a 9147
area n_vatidpaw
let x_a 2381
nop p_bmncluwq
end
func n_bitcouov
let x_a 2353
end
probe q_weiyabfx x_a
Answer:
9147

Example 2
Program prefix:
let x_b 4643
let x_a 9240
area n_jwjtonjy
let x_a 5060
nop p_zvrdujac
end
func n_elakdjlt
unit n_zkugdafl
let x_a 7468
nop p_djjwjykg
end
area n_pqsktqal
let x_a 1017
unit n_pijimsaw
let x_a 5749
nop p_bkcqvgef
end
end
probe q_onitejyk x_a
Answer:
9240

Example 3
Program prefix:
let x_b 2603
let x_a 4534
area n_igwgjwxr
let x_a 7717
nop p_arlbtehc
end
area n_yzroehmu
let x_a 1287
unit n_wztpbctn
let x_a 2226
nop p_onjrbqqr
end
unit n_jhlqzdhf
let x_a 9616
unit n_plmwzuun
let x_a 1008
unit n_zjasycsp
let x_a 7252
nop p_kzrmnund
nop p_ldxedvla
end
end
probe q_emfmlypw x_a
Answer:
9616

Example 4
Program prefix:
let x_b 7712
let x_a 1404
unit n_orcqilwv
let x_a 5947
nop p_tnxbymlx
end
func n_vptgxaqc
func n_jtejogmc
let x_a 9799
nop p_ggijypnl
end
area n_bjobaqua
let x_a 6432
nop p_odshpixa
nop p_iojfbaoo
nop p_psdmjcpx
end
probe q_ekhnwdvf x_a
Answer:
1404

Example 5
Program prefix:
let x_b 2396
let x_a 1875
func n_vtoyqqhf
let x_a 5155
nop p_jmjfcnjr
end
area n_jugfmzum
let x_a 1775
func n_mprryqun
let x_a 6576
nop p_agedtkcg
end
unit n_orkqqzbn
let x_a 9387
func n_pqcoyknm
let x_a 7662
nop p_secslvsx
nop p_shpapfhe
nop p_hgrvmeey
nop p_qlwoztrf
end
end
probe q_azrftedt x_a
Answer:
1775

Example 6
Program prefix:
let x_b 1134
let x_a 9864
unit n_tyonnqti
let x_a 4034
nop p_bneqoyft
end
func n_zumeyzwo
let x_a 7362
func n_svppttop
let x_a 9968
nop p_duhfiapp
end
func n_hfinelpx
func n_btantfyt
let x_a 5771
area n_rozsaqva
let x_a 2454
nop p_jlrxmplc
nop p_edrrrins
nop p_ebylllhm
nop p_iqroapfl
nop p_qvfomogd
end
end
probe q_smrujqtl x_a
Answer:
7362

Example 7
Program prefix:
let x_b 6259
let x_a 8415
func n_jjsggzpc
let x_a 1241
nop p_qzsnyrmp
end
func n_wjfyport
let x_a 2363
unit n_lephpreg
let x_a 6811
nop p_forfkwze
end
unit n_bpcqoznq
let x_a 8625
nop p_amteviko
nop p_mpcobtyq
nop p_exmjvecm
nop p_xqjinttp
nop p_tzxzsusn
nop p_kzrptmdu
end
probe q_iglmuvnu x_a
Answer:
2363

Example 8
Program prefix:
let x_b 8707
let x_a 6260
func n_gzwokkrx
let x_a 6180
nop p_vazrrapk
end
func n_jklqiklj
area n_cdoyhwqj
let x_a 5254
nop p_dgrdtjdm
end
unit n_mdlaxrnb
let x_a 6264
func n_mhrfhtuz
let x_a 3058
nop p_mdxdngyi
nop p_azlenkox
nop p_kuelkeio
nop p_lediertt
nop p_zxscckam
nop p_vsopddqw
nop p_lasnjtfs
end
end
probe q_brsxfyge x_a
Answer:
6260

TEST
Program prefix:
let x_a 5042
func n_rwwizuvq
let x_a 8036
nop p_qmrearcv
end
area n_degvkuri
let x_a 5081
func n_yoxpxhad
let x_a 6475
area n_qpxllwer
let x_a 2528
area n_vofxbfyb
let x_a 4158
unit n_vkykmzaw
let x_a 7410
func n_pdmhhbjo
let x_a 6179
func n_ghtuczdp
let x_a 7571
func n_oomvmpsg
let x_a 9941
nop p_vrrwiuxu
end
area n_kalngwbb
func n_iscgbojx
let x_a 1755
area n_ordkjrxj
let x_a 2814
unit n_ynyaogeh
let x_a 7767
area n_hcieadnr
let x_a 8688
area n_fazrruot
let x_a 7040
func n_hqawpuad
let x_a 9191
area n_drupmbsm
let x_a 6266
unit n_ditwdvea
let x_a 9013
nop p_rddlkojv
nop p_jzsozqcy
nop p_trtgstwl
nop p_wgaqrgqp
nop p_idmuavcy
nop p_mxlhfrrp
nop p_pakrmjyx
nop p_kwplidzr
nop p_sxgcryzq
nop p_hfldydxl
nop p_cygzvidi
nop p_mhmduwgd
nop p_dbdmgyvc
nop p_rzgjcdkg
nop p_excjnedp
nop p_xrzihosf
nop p_xsacjqwd
nop p_kvanulqo
nop p_sxdoxwqa
nop p_yamisvaz
nop p_hikwajna
nop p_twaxcyvg
nop p_esqwiuxg
nop p_abanxeyd
nop p_hqzfxsdr
nop p_oyomdnjr
nop p_ycqpcfrf
nop p_illglgjn
nop p_ccrvzacr
nop p_mgvomqhg
nop p_mscxcbmo
nop p_bujzzirc
nop p_ezgeehke
nop p_zhhrvwig
nop p_ocrwuofy
nop p_kskcrhik
nop p_oylhfaij
nop p_aowcweod
nop p_faqzolvn
nop p_mxqqjmyf
nop p_ihhvdudn
nop p_xgdtrfxr
nop p_dictrqes
nop p_cgnxvxdo
nop p_xyyfculi
nop p_chusoquz
nop p_qktjxaec
nop p_bvwhpvta
nop p_ycgbwbpu
nop p_iserxjcj
nop p_zdcjfjse
nop p_fnjbbdxl
nop p_kngmrtib
nop p_eruzuxqp
nop p_mhjuxxjg
nop p_zsolfmuq
nop p_aqsilhuh
nop p_fuoutkkr
nop p_oiwnfvtr
nop p_rsohuzsq
nop p_hgqkutxn
nop p_kreymucy
nop p_vowitxlo
nop p_jozknaxz
nop p_eqgwwvka
nop p_nwycyalv
nop p_uhutxoul
nop p_ktdiqavq
nop p_gtcyfpal
nop p_myjowtwb
nop p_fzupbmyt
nop p_ejsrkuyw
nop p_kdmhfhjk
nop p_yrvpwhrw
nop p_tigeyahn
nop p_jdocefcs
nop p_qphvcuas
nop p_upbxxhed
nop p_bhvwibup
nop p_urvrieud
nop p_ffpqwuce
nop p_tcwavuaz
nop p_uafnqxos
nop p_wybgbyxp
nop p_hlokcohx
nop p_rozomrau
nop p_vdqbczxt
nop p_uezprezi
nop p_zhqkqdjn
nop p_rurvklqp
nop p_jrbleczb
nop p_zcwzcael
nop p_xfednzby
nop p_nmzayjhv
nop p_jczgjpbq
nop p_ubhkuihl
nop p_ucfghbiq
nop p_ekjjibuy
nop p_aogrxfay
nop p_ihbkfijd
nop p_wedxjaah
nop p_agbrjmjv
nop p_pnautnrt
nop p_wspmzbjc
nop p_zrxhpvzk
nop p_isumnfrp
nop p_kzuhuoga
nop p_fjhostfa
nop p_wbtxhnag
nop p_bxlacxyq
nop p_hoiasoxp
nop p_xkeainds
nop p_nenjljkh
nop p_yfauexsl
nop p_xiqcxkxk
nop p_vzehvwkj
nop p_uhytncoo
nop p_oubmsvfh
nop p_ycfohpps
nop p_dklfbrbn
nop p_okyzvgwh
nop p_owygiuhn
nop p_kaansdco
nop p_qjksufoo
nop p_sfirtoab
nop p_pdqobpcs
nop p_jmjfgjoh
nop p_yifbowwr
nop p_oycuvdlz
nop p_uewtrtpa
nop p_cssinxdf
nop p_mlxanbri
nop p_yngihzay
nop p_wgclqxrz
nop p_bcacdlqn
nop p_trmxokft
nop p_rjzkjfyn
nop p_mnaempui
nop p_qpncyyaq
nop p_igksfvgo
nop p_vwagvlba
nop p_jejzoqgs
nop p_gdqcltdu
nop p_uipenech
nop p_osfabwlf
nop p_fsrowtsw
nop p_qyuqbwpa
nop p_mlnsrelo
nop p_jzkxryyf
nop p_hdkbrdja
nop p_vitncbzl
nop p_bjtdrzav
nop p_cjyzally
nop p_poohired
nop p_mrztlsis
nop p_ohqpinwm
nop p_gcxkiirg
nop p_ckhgpixs
nop p_qoiooswl
nop p_qrvchysb
nop p_nxouuhnp
nop p_gdjiiaez
nop p_gxlbkouo
nop p_qpeyeasq
nop p_bofmdsye
nop p_gryufgwl
nop p_bnswfyvw
nop p_rpeunauz
nop p_xryexwos
nop p_peiuotgn
nop p_svdpccfl
nop p_oeovgupp
nop p_vqcwvgvc
nop p_kmvebygk
nop p_bsxtlakv
nop p_eaxahvla
nop p_vrurkyvg
nop p_mgpcyqfy
nop p_bqhsunnw
nop p_voqlsqfo
nop p_yzsxsalf
nop p_wmqzpntc
nop p_wquqjwrn
nop p_mroolwim
nop p_bcaylteg
nop p_lsbviqvg
nop p_hcrnqzct
nop p_rnwljiyx
nop p_vohzdjbl
nop p_ewwgumsv
nop p_seyflclt
nop p_jknclwgx
nop p_xrniyajr
nop p_sbhzciym
nop p_sspfoald
nop p_ijeqddsr
nop p_rrtdwokh
nop p_eddiyftj
nop p_afikrrkk
nop p_fuxbmjam
nop p_niphhicr
nop p_drfedock
nop p_hbnwiwmr
nop p_fnrhtqdf
nop p_kjjwskno
nop p_bydxctub
nop p_rxpnnukj
nop p_pukxcoyv
nop p_qqmmkdev
nop p_irzrjlxy
nop p_yhynhzve
nop p_kpczyniq
nop p_vhwxxguq
nop p_pfiibxyh
nop p_pjnfayvw
nop p_taycvqwo
nop p_chqweski
nop p_uuiguhnm
nop p_raexjukb
nop p_xuvqrbxi
nop p_rhxbhpmg
nop p_oljkiorf
nop p_lvnbugjj
nop p_dzxfasur
nop p_nplcbaie
nop p_uekipobq
nop p_wmxyqrdu
nop p_itequjio
nop p_looeqbhv
nop p_oxkxrivj
nop p_ckkazcbq
nop p_tlhndxxc
nop p_ggojxqge
nop p_fwzhwudk
nop p_hmjhczjo
nop p_tquqrigv
nop p_klghwpgq
nop p_bqhwkawp
nop p_iabjqpfm
nop p_oodhaxoa
nop p_jebdxmtp
nop p_ndxrlfxv
nop p_qprhfuum
nop p_lkxympnw
nop p_cjnpwkbg
nop p_kvvurfma
nop p_averzonv
nop p_owpaxfzb
nop p_chqhfdlq
nop p_jmklktmk
nop p_cjbpmfpu
nop p_uyzahsvh
nop p_kjuuqcgn
nop p_ruugkdoy
nop p_pdkiquyc
nop p_hexlaoid
nop p_laaufcgq
nop p_fqhuvbut
nop p_ortanuqy
nop p_qtibwmjn
nop p_xxnjaidq
nop p_ibsbuiye
nop p_gsaxbkiw
nop p_htowaigh
nop p_gkxerlgt
nop p_orwhbubj
nop p_jclaxnhg
nop p_euxkigzj
nop p_xgsrsnmi
nop p_wbhrhoau
nop p_fhylkgnx
nop p_qwyudqlv
nop p_dtjknvvg
nop p_iunrkcxl
nop p_ljrwwcws
nop p_spmjcdex
nop p_dfvcvysl
nop p_livbrrbt
nop p_kepeqjly
nop p_pohadjhx
nop p_vaqhoruc
nop p_bavukylo
nop p_heirtalk
nop p_wpjbjaxl
nop p_uzqxlzhy
nop p_rbvczhhh
nop p_dbcbnwig
nop p_qmlmfioz
nop p_cmlqqexc
nop p_bdarqtng
nop p_mmmhdkjb
nop p_cvpbtndz
nop p_ngkeonts
nop p_gobkqvwa
nop p_ilednznj
nop p_qiizxman
nop p_iaievryx
nop p_iawfuqbw
nop p_kkgjtzmt
nop p_qpgixvyf
nop p_hrplxbwy
nop p_mjzittwq
nop p_pysclniu
nop p_fylkzbyw
nop p_yybhkqkp
nop p_rixxutbd
nop p_egkexyqs
nop p_rosspzod
nop p_ujpszety
nop p_gzarbklo
nop p_jcqhdhhf
nop p_zlwetccw
nop p_kfsgbsxc
nop p_qcggehvm
nop p_vxlznjbt
nop p_jpncftji
nop p_dyexwlgn
nop p_ebgqxhip
nop p_udzdjdzu
nop p_qbxtbxsb
nop p_iybquovp
nop p_tbdylvmo
nop p_vjufhbiy
nop p_wpppakbo
nop p_xkxgukpm
nop p_ditgdyri
nop p_wlqzvuuz
nop p_iitoqjzc
nop p_akfchnwe
nop p_ensfdegn
nop p_uukwrjhd
nop p_zcehgddk
nop p_cxkebulr
nop p_nxjzyewu
nop p_ytdsdgoe
nop p_wlyikurl
nop p_tquemylt
nop p_qdmmahew
nop p_fwlprxws
nop p_hnnrzmpv
nop p_pbtgceuk
nop p_zimilqsn
nop p_szvwctjx
nop p_unachqco
nop p_bayhuvoh
nop p_xwqnqgem
nop p_ccltwuzj
nop p_nrqsmglj
nop p_lwpumoqw
nop p_qauodajy
nop p_wbvykzdh
nop p_cqvjyzuj
nop p_mpauikpj
nop p_xquldazr
nop p_tnkgyhcj
nop p_ccfnxcyh
nop p_rbyvxpjl
nop p_juebchnu
nop p_kgcjtqvr
nop p_kbnjzxve
nop p_lcuthacr
nop p_nxtkcwkq
nop p_jgkxfhui
nop p_zwbfwffg
nop p_egsovufr
nop p_nfvstykp
nop p_povycqfh
nop p_ybjvoxin
nop p_klcpppru
nop p_vfiavkco
nop p_awnvypkc
nop p_eikitmiy
nop p_otfafupd
nop p_yceiiuui
nop p_tnqhekvs
nop p_pvnydhdj
nop p_znrdnjjx
nop p_xslobplw
nop p_okozvnga
nop p_gksjuplg
nop p_qfbfhshb
nop p_frxysgoa
nop p_gvcrojgv
nop p_gnxeydoz
nop p_aniofjit
nop p_nmqviojk
nop p_vimoygfs
nop p_ygvhtnak
nop p_jaggxmpt
nop p_pjxzveqo
nop p_ewyjxlqz
nop p_amqasoev
nop p_htnplgfs
nop p_zuncjyex
nop p_jpuebrcm
nop p_bdibvjos
nop p_tmhqdrmf
nop p_itlzndor
nop p_zbwxkpfk
nop p_xroptwto
nop p_kcflwcqd
nop p_rmumzwsm
nop p_hassbwfm
nop p_lphfmggc
nop p_ztbkswrn
nop p_drndaezn
nop p_amhlbinl
nop p_yidexhvv
nop p_qizocogj
nop p_msexxglz
nop p_pbrbcgea
nop p_pscyyrsi
nop p_idnpcdev
nop p_noeuknkb
nop p_dzqfrxqd
nop p_xyfvbxkf
nop p_crzgnbgm
nop p_tjtiecsy
nop p_ptzfiwoz
nop p_yoyrquqg
nop p_nzrrvlri
nop p_fjrkujhw
nop p_fznxpufn
nop p_vusjxoqb
nop p_xbuodulh
nop p_zvdmogri
nop p_nlydgbzj
nop p_yltacize
nop p_znihwtup
nop p_vekmyrmo
nop p_urulgmsy
nop p_ebzlvlcv
nop p_nwnwmpsf
nop p_megwjnct
nop p_stfurypu
nop p_athzwuxu
nop p_woamfswe
nop p_rmvvkknq
nop p_jsusuahq
nop p_xokzzmay
nop p_nqpifpzp
nop p_rgstfhsx
nop p_mecbfxmh
nop p_hfwaeewj
nop p_xrmugbug
nop p_bszoejto
nop p_tdfckptn
nop p_hfxpbrgj
nop p_xswcmjgw
nop p_cfchprlr
nop p_vhpaxpva
nop p_msqvztop
nop p_vyeahehu
nop p_ptkgngfm
nop p_lxvsracs
nop p_blxymlrk
nop p_kdpetxpm
nop p_kmiugnfo
nop p_cvhoyhkz
nop p_maxgbcsn
nop p_qogrwsyd
nop p_dymthgay
nop p_nqxzxrqh
nop p_zluksupy
nop p_cnbbfwfs
nop p_ftcuyayf
nop p_primifxz
nop p_dyyailog
nop p_rqipvspd
nop p_ghawcyvt
nop p_wbdtlelr
nop p_pkethkgy
nop p_mjdlsurz
nop p_lghwfepv
nop p_ofosjglz
nop p_stqtpnis
nop p_loilncjz
nop p_unqkxvwg
nop p_lntpomxu
nop p_dunomtav
nop p_homyqjha
nop p_mavqyvuz
nop p_rutqvbfj
nop p_cmcbmrxg
nop p_tpnfztqu
nop p_bjircxui
nop p_nkbwqrbo
nop p_zipllzuu
nop p_iznfpvfc
nop p_ofajvzjl
nop p_mtbhqbde
nop p_fjuddsrf
nop p_ogndkuxf
nop p_oyywlhck
nop p_zdzybohc
nop p_rtbuurul
nop p_lauwplgh
nop p_uvuzwyjh
nop p_yfqvvfrj
nop p_ybdtgdkh
nop p_moujyyon
nop p_bfocqkov
nop p_grasezjv
nop p_gfbpfbct
nop p_ecjnhcid
nop p_wyijpidt
nop p_xvdaqhnu
nop p_kzrwrysx
nop p_vggtmpxi
nop p_mejengln
nop p_ipcrnsuk
nop p_oktmqhah
end
end
end
end
end
end
end
end
probe q_phgzwuhz x_a
Answer: