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 vomu for unit, zafi for func, and nelo for area. Each creates a local scope. Open a block with KIND NAME on one line. Close the innermost open block with pab on its own line. KIND is one of vomu, zafi, nelo; NAME is n_ followed by exactly eight lowercase letters and is unique in the program. A binding statement (let) is dut 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 hev 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: dut x_b 4122 dut x_a 2890 zafi n_xubbtrah dut x_a 3834 hev p_gwsvasbv pab vomu n_svuhbhuc dut x_a 9147 nelo n_vatidpaw dut x_a 2381 hev p_bmncluwq pab zafi n_bitcouov dut x_a 2353 pab probe q_weiyabfx x_a Answer: 9147 Example 2 Program prefix: dut x_b 4643 dut x_a 9240 nelo n_jwjtonjy dut x_a 5060 hev p_zvrdujac pab zafi n_elakdjlt vomu n_zkugdafl dut x_a 7468 hev p_djjwjykg pab nelo n_pqsktqal dut x_a 1017 vomu n_pijimsaw dut x_a 5749 hev p_bkcqvgef pab pab probe q_onitejyk x_a Answer: 9240 Example 3 Program prefix: dut x_b 2603 dut x_a 4534 nelo n_igwgjwxr dut x_a 7717 hev p_arlbtehc pab nelo n_yzroehmu dut x_a 1287 vomu n_wztpbctn dut x_a 2226 hev p_onjrbqqr pab vomu n_jhlqzdhf dut x_a 9616 vomu n_plmwzuun dut x_a 1008 vomu n_zjasycsp dut x_a 7252 hev p_kzrmnund hev p_ldxedvla pab pab probe q_emfmlypw x_a Answer: 9616 Example 4 Program prefix: dut x_b 7712 dut x_a 1404 vomu n_orcqilwv dut x_a 5947 hev p_tnxbymlx pab zafi n_vptgxaqc zafi n_jtejogmc dut x_a 9799 hev p_ggijypnl pab nelo n_bjobaqua dut x_a 6432 hev p_odshpixa hev p_iojfbaoo hev p_psdmjcpx pab probe q_ekhnwdvf x_a Answer: 1404 Example 5 Program prefix: dut x_b 2396 dut x_a 1875 zafi n_vtoyqqhf dut x_a 5155 hev p_jmjfcnjr pab nelo n_jugfmzum dut x_a 1775 zafi n_mprryqun dut x_a 6576 hev p_agedtkcg pab vomu n_orkqqzbn dut x_a 9387 zafi n_pqcoyknm dut x_a 7662 hev p_secslvsx hev p_shpapfhe hev p_hgrvmeey hev p_qlwoztrf pab pab probe q_azrftedt x_a Answer: 1775 Example 6 Program prefix: dut x_b 1134 dut x_a 9864 vomu n_tyonnqti dut x_a 4034 hev p_bneqoyft pab zafi n_zumeyzwo dut x_a 7362 zafi n_svppttop dut x_a 9968 hev p_duhfiapp pab zafi n_hfinelpx zafi n_btantfyt dut x_a 5771 nelo n_rozsaqva dut x_a 2454 hev p_jlrxmplc hev p_edrrrins hev p_ebylllhm hev p_iqroapfl hev p_qvfomogd pab pab probe q_smrujqtl x_a Answer: 7362 Example 7 Program prefix: dut x_b 6259 dut x_a 8415 zafi n_jjsggzpc dut x_a 1241 hev p_qzsnyrmp pab zafi n_wjfyport dut x_a 2363 vomu n_lephpreg dut x_a 6811 hev p_forfkwze pab vomu n_bpcqoznq dut x_a 8625 hev p_amteviko hev p_mpcobtyq hev p_exmjvecm hev p_xqjinttp hev p_tzxzsusn hev p_kzrptmdu pab probe q_iglmuvnu x_a Answer: 2363 Example 8 Program prefix: dut x_b 8707 dut x_a 6260 zafi n_gzwokkrx dut x_a 6180 hev p_vazrrapk pab zafi n_jklqiklj nelo n_cdoyhwqj dut x_a 5254 hev p_dgrdtjdm pab vomu n_mdlaxrnb dut x_a 6264 zafi n_mhrfhtuz dut x_a 3058 hev p_mdxdngyi hev p_azlenkox hev p_kuelkeio hev p_lediertt hev p_zxscckam hev p_vsopddqw hev p_lasnjtfs pab pab probe q_brsxfyge x_a Answer: 6260 TEST Program prefix: dut x_a 4621 nelo n_yjtwamnc dut x_a 2517 hev p_bpksahie pab nelo n_novbpguu dut x_a 5145 vomu n_wxsoeovk dut x_a 8971 hev p_tvcgpjqt pab zafi n_momjejmp dut x_a 8192 zafi n_zhjpopdg dut x_a 1972 nelo n_wuzloxnn dut x_a 4936 hev p_bnygnkcn hev p_gtcibymw hev p_czaleqzl hev p_zjzacwfp hev p_uecbkkmq hev p_noksdoct hev p_emqhaleo hev p_brrfcnla hev p_waihedio hev p_dtukgywo hev p_qeggcdxk hev p_sekdfuzh hev p_gtswpfra hev p_doooicyf hev p_rrymonvb hev p_tittluds hev p_osodhvtd hev p_vdjvfxhk hev p_ktbgguko hev p_tdcbmbtm hev p_zjqobonh hev p_vmafvuwy hev p_idnviwvv hev p_jbklwsdr hev p_rsshmfvf hev p_oxfkspdg hev p_srvpoynt hev p_kchfwpgc hev p_vnbffxen hev p_oyazixzz hev p_rrnuydcb hev p_tdprcodg pab pab probe q_swlqynvx x_a Answer: