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第 24311 題:有限流網路

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  1. 原題與已知條件
  2. 定義與適用範圍
  3. 逐步推導
  4. 逐步反向核對
  5. 結論
  6. 本題覆核與來源綁定

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← 逐題詳解目錄 · 原題批次

R0047-24311 · q-20261015-advance-20261113-r07-finite-flow-network-0036

原題與已知條件

finite loop-free directed network、逐edge capacity與逐internal-vertex conservation。操作=flow-capacity-audit;資料={"vertices":["s10","a10","t10","u10"],"edges":[["s10","a10"],["a10","s10"],["a10","t10"],["t10","a10"]],"source":"s10","sink":"t10","capacities":[55,55,55,55],"flows":[66,22,33,11]}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。

  • G001 — finite loop-free directed network、逐edge capacity與逐internal-vertex conservation。操作=flow-capacity-audit;資料={"vertices":["s10","a10","t10","u10"],"edges":[["s10","a10"],["a10","s10"],["a10","t10"],["t10","a10"]],"source":"s10","sink":"t10","capacities":[55,55,55,55],"flows":[66,22,33,11]}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。

定義與適用範圍

沿用原題明示的論域、假設與來源 MKO 定義。本題已完成第二對話數理與中英語義覆核,並由原始參數逐題獨立重算模型、答案與每個算術步驟;原題仍為 candidate。

逐步推導

S001 · implies

操作前

source roles = [flow-capacity-audit]

操作後

derived = [[source, sink, edge_capacity_flow_rows, capacity_rows, capacity_feasible, first_failed_edge_or_null, certificate]]

條件:無

本頁列完整來源欄序,不需JavaScript;gradient boundary依原mode選6/8/7欄,不補欄也不由答案猜mode。

步驟識別與依賴

規則:source_ordered_fields_without_JS · 依賴:G001

S002 · implies

操作前

source roles = [[s10, a10, t10, u10], [[s10, a10], [a10, s10], [a10, t10], [t10, a10]], [55, 55, 55, 55], [66, 22, 33, 11], s10, t10]

操作後

derived = [[a10, s10, t10, u10], [[[a10, s10], 55, 22], [[a10, t10], 55, 33], [[s10, a10], 55, 66], [[t10, a10], 55, 11]], 2, 是]

條件:無

先依原index配好edge/capacity/flow,再按來源English canonical(edge)序排;vertices用UTF16。反向邊是不同edge,zero容量與孤立點合法,負flow保留供容量判失敗,不修改。

步驟識別與依賴

規則:Flow_zip_source_edges_capacities_flows_BEFORE_order · 依賴:G001, S001

S003 · implies

操作前

source roles = [0, [a10, s10], 22, 55]

操作後

derived = [是, 是, 是]

條件:無

每條有向邊都要0<=flow<=capacity;網路signature合格並不保證候選flow可行。

步驟識別與依賴

規則:Flow_EACH_edge_two_sided_capacity_obligation · 依賴:G001, S002

S004 · implies

操作前

source roles = [1, [a10, t10], 33, 55]

操作後

derived = [是, 是, 是]

條件:無

每條有向邊都要0<=flow<=capacity;網路signature合格並不保證候選flow可行。

步驟識別與依賴

規則:Flow_EACH_edge_two_sided_capacity_obligation · 依賴:G001, S003

S005 · implies

操作前

source roles = [2, [s10, a10], 66, 55]

操作後

derived = [是, 否, 否]

條件:無

每條有向邊都要0<=flow<=capacity;網路signature合格並不保證候選flow可行。

步驟識別與依賴

規則:Flow_EACH_edge_two_sided_capacity_obligation · 依賴:G001, S004

S006 · implies

操作前

source roles = [3, [t10, a10], 11, 55]

操作後

derived = [是, 是, 是]

條件:無

每條有向邊都要0<=flow<=capacity;網路signature合格並不保證候選flow可行。

步驟識別與依賴

規則:Flow_EACH_edge_two_sided_capacity_obligation · 依賴:G001, S005

S007 · calculation

操作前

Flow ALL incoming at vertex a10 := sum(66, 11)

操作後

Flow ALL incoming at vertex a10 = 77

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S006

S008 · calculation

操作前

Flow ALL outgoing at vertex a10 := sum(22, 33)

操作後

Flow ALL outgoing at vertex a10 = 55

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S007

S009 · implies

操作前

source roles = [a10, [2, 3], [0, 1]]

操作後

derived = [77, 55, 否, 是]

條件:無

入邊/出邊各依完整清單加總;孤立點是0=0。守恆只要求internal vertices,源匯仍計完整balance以求net值。

步驟識別與依賴

規則:Flow_EACH_vertex_complete_directional_incidence · 依賴:G001, S008

S010 · calculation

操作前

Flow ALL incoming at vertex s10 := sum(22)

操作後

Flow ALL incoming at vertex s10 = 22

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S009

S011 · calculation

操作前

Flow ALL outgoing at vertex s10 := sum(66)

操作後

Flow ALL outgoing at vertex s10 = 66

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S010

S012 · implies

操作前

source roles = [s10, [0], [2]]

操作後

derived = [22, 66, 否, 否]

條件:無

入邊/出邊各依完整清單加總;孤立點是0=0。守恆只要求internal vertices,源匯仍計完整balance以求net值。

步驟識別與依賴

規則:Flow_EACH_vertex_complete_directional_incidence · 依賴:G001, S011

S013 · calculation

操作前

Flow ALL incoming at vertex t10 := sum(33)

操作後

Flow ALL incoming at vertex t10 = 33

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S012

S014 · calculation

操作前

Flow ALL outgoing at vertex t10 := sum(11)

操作後

Flow ALL outgoing at vertex t10 = 11

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S013

S015 · implies

操作前

source roles = [t10, [1], [3]]

操作後

derived = [33, 11, 否, 否]

條件:無

入邊/出邊各依完整清單加總;孤立點是0=0。守恆只要求internal vertices,源匯仍計完整balance以求net值。

步驟識別與依賴

規則:Flow_EACH_vertex_complete_directional_incidence · 依賴:G001, S014

S016 · calculation

操作前

Flow ALL incoming at vertex u10 := sum()

操作後

Flow ALL incoming at vertex u10 = 0

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S015

S017 · calculation

操作前

Flow ALL outgoing at vertex u10 := sum()

操作後

Flow ALL outgoing at vertex u10 = 0

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S016

S018 · implies

操作前

source roles = [u10, [], []]

操作後

derived = [0, 0, 是, 是]

條件:無

入邊/出邊各依完整清單加總;孤立點是0=0。守恆只要求internal vertices,源匯仍計完整balance以求net值。

步驟識別與依賴

規則:Flow_EACH_vertex_complete_directional_incidence · 依賴:G001, S017

S019 · calculation

操作前

Flow source NET outflow not gross outgoing := sub(66, 22)

操作後

Flow source NET outflow not gross outgoing = 44

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S018

S020 · calculation

操作前

Flow sink NET inflow not gross incoming := sub(33, 11)

操作後

Flow sink NET inflow not gross incoming = 22

條件:無

依原題角色與已證中間量精確代值;分母先核非零,不以近似數替代。

步驟識別與依賴

規則:exact_rational_arithmetic · 依賴:G001, S019

S021 · implies

操作前

source roles = [s10, t10, [[[a10, s10], 22, 55, 是], [[a10, t10], 33, 55, 是], [[s10, a10], 66, 55, 否], [[t10, a10], 11, 55, 是]], [[a10, 77, 55, 否], [u10, 0, 0, 是]], 44, 22]

操作後

derived = [否, 否, 否, 否, 否]

條件:無

全vertex總in−out中每edge相消,故全部internal守恆必得兩net相等;反向不成立,internal imbalance可互抵。容量、逐點守恆、兩net值分別核,feasible不推出maximum/min-cut。最後No是不提供最優證書,不否定特例恰好最優。

步驟識別與依賴

規則:Flow_value_capacity_conservation_and_maximum_separate · 依賴:G001, S020

逐步反向核對

  • S021 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S020 · premise_and_result_audit — 以精確有理數重算 Flow sink NET inflow not gross incoming,不以小數近似替代。
  • S019 · premise_and_result_audit — 以精確有理數重算 Flow source NET outflow not gross outgoing,不以小數近似替代。
  • S018 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S017 · premise_and_result_audit — 以精確有理數重算 Flow ALL outgoing at vertex u10,不以小數近似替代。
  • S016 · premise_and_result_audit — 以精確有理數重算 Flow ALL incoming at vertex u10,不以小數近似替代。
  • S015 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S014 · premise_and_result_audit — 以精確有理數重算 Flow ALL outgoing at vertex t10,不以小數近似替代。
  • S013 · premise_and_result_audit — 以精確有理數重算 Flow ALL incoming at vertex t10,不以小數近似替代。
  • S012 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S011 · premise_and_result_audit — 以精確有理數重算 Flow ALL outgoing at vertex s10,不以小數近似替代。
  • S010 · premise_and_result_audit — 以精確有理數重算 Flow ALL incoming at vertex s10,不以小數近似替代。
  • S009 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S008 · premise_and_result_audit — 以精確有理數重算 Flow ALL outgoing at vertex a10,不以小數近似替代。
  • S007 · premise_and_result_audit — 以精確有理數重算 Flow ALL incoming at vertex a10,不以小數近似替代。
  • S006 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S005 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S004 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S003 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S002 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。
  • S001 · premise_and_result_audit — 回到原始資料與本步條件核對,不把單向推論誤稱等價。

結論

(s10, t10, [[[a10, s10], 55, 22], [[a10, t10], 55, 33], [[s10, a10], 55, 66], [[t10, a10], 55, 11]], [[[a10, s10], 22, 55, 是], [[a10, t10], 33, 55, 是], [[s10, a10], 66, 55, 否], [[t10, a10], 11, 55, 是]], 否, [[s10, a10], 66, 55, 否], every_edge_requires_zero_less_equal_flow_less_equal_capacity)

依上列完整代值及條件核對得到原題答案;原題編號、格式與狀態保持不變。

本題覆核與來源綁定

覆核日期:2026-10-26

原題、答案、步驟表達式、數值 AST 與既有歷史保持原樣;原來的候選狀態屬於來源歷史,不覆寫為形式化證明。

來源雜湊與覆核憑證
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: f59df0111709405d802b293f81c4d4e4a83bbf6c72cbd214f0a2b6bd0281430b
  • candidate record SHA-256: c3586750b7a63614227e3d79ff09289135a5bc672d0f1a8e484792c5fa6b6739
  • semantic review receipt SHA-256: 9b43b9823e9bd2478d6caa5b57ffed161c2c8956af86974e901d5662ad994386
  • question-first witness SHA-256: eb97596068e2d5648033bab2b8f6ca9b653bbe8cb77c0f8e1d16d0c40e46f50b
  • Lean: NOT_RUN · human review: NOT_PERFORMED
同源完整 JSON