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Contractual Commitments - Agreements of Extension of Concessions - Additional Information (Detail) |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended | 24 Months Ended |
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Aug. 25, 2017 USD ($) | Aug. 01, 2017 USD ($) | Apr. 03, 2017 USD ($) Well | Jan. 08, 2016 USD ($) | Jan. 17, 2014 USD ($) | Dec. 18, 2013 | Oct. 02, 2013 USD ($) | Jul. 24, 2013 km² | Oct. 23, 2012 USD ($) | Dec. 28, 2000 | Dec. 05, 2000 USD ($) | Dec. 31, 2027 | Nov. 30, 2012 USD ($) | Aug. 31, 2012 | Apr. 30, 2011 USD ($) | Dec. 31, 2018 USD ($) | Aug. 01, 2017 USD ($) Wells | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2009 USD ($) | Jul. 16, 2013 USD ($)
Province Of Chubut [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exploitation concessions, extended term |  |  |  |  |  |  | 30 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Historical Remediation Bonus commitment |  |  |  |  | $ 30,000,000 |  | $ 18,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hydrocarbons Compensation bonus commitment |  |  |  |  | 3.00% |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service concessions arrangement, terms and conditions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The Concessions were extended for a 30 year period counted as from the year 2017. The main terms and conditions agreed by the Province of Chubut comprise the commitment of the companies belonging to the JO to make the following payments and contributions: (i) paying US$ 18 million as Historical Remediation Bonus; (ii) paying a Compensation Bonus amounting to a fixed 4% over the production of gas and oil since 2013 (this is calculated as an additional royalty); (iii) covering expenses and investments related to the protection and conservation of the environment; (iv) maintaining a minimum amount of equipment for drilling and work-overs in operation; (v) after the first ten years of extension, Petrominera S.E. will acquire a 10% interest in the exploitation concessions |  |  |  |  |  |
Portion of total concessions in Joint Operations |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province Of Chubut [member] | YPF Sociedad Anonima [member] | Exploitation Concessions Arrangements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  | 100.00% |  | 12.196% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province Of Chubut [member] | ENAP SIPETROL S.A. [member] | Exploitation Concessions Arrangements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province Of Chubut [member] | Petrominera S.E. [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province Of Chubut [member] | Petrominera S.E. [member] | Exploitation Concessions Arrangements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  | 41.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province Of Chubut [member] | Petrobras Argentina S.A. [member] | Exploitation Concessions Arrangements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  | 35.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province Of Chubut [member] | Tecpetrol S.A. [member] | Exploitation Concessions Arrangements [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  | 52.133% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province of Rio Negro [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exploitation concessions, extended term |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed bonus commitment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 46,000,000 |  |  |
Contribution towards social development |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,200,000 |  |  |
Percentage of supplementary contributions to monthly oil production |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  |  |
Percentage of supplementary contributions to monthly gas production |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  |  |
Province of Rio Negro [member] | YPF Sociedad Anonima [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |
Date of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 14, 2027 |  |  |
Province of Neuquen [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended of additional period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |
Province of Neuquen [member] | Infrastructure for Natural Gas Distribution [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000
Province of Neuquen [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expire period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2026 |  |  |  |  |  |
Province of Neuquen [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expire period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2027 |  |  |  |  |  |
Province of Neuquen [member] | Other concessions [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 204,000,000 |
Percentage of an extraordinary production royalty |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |
Adjustment of additional Percentage of an extraordinary income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |
Investments and expenditures in the production concessions that are the purpose of the agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,512,000,000 |
Province of Neuquen [member] | Loma La Lata - Sierra Barrosa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended of additional period |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Payments of contractual commitments fee |  |  |  |  |  |  |  |  |  |  | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |
Commitments fees of disbursement and investment program |  |  |  |  |  |  |  |  |  |  | $ 8,000,000,000 |  |  |  |  |  |  |  |  |  |  |
Percentage of net cash flows arising out of the concession during each year of the extension term |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |
Exploitation of concession a surface area | km² |  |  |  |  |  |  |  | 327.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of corporate social responsibility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,000,000 | $ 45,000,000 | $ 45,000,000 |  |
Reduction percentage portion of payments of subsidy |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |
Province of Neuquen [member] | Loma La Lata - Sierra Barrosa [Member] | Entering into commitments [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage portion of payments of investment project profits after taxes |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Province of Neuquen [member] | Loma La Lata - Sierra Barrosa [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period |  |  |  |  |  |  |  |  |  |  | 2000 |  |  |  |  |  |  |  |  |  |  |
Province of Neuquen [member] | Loma La Lata - Sierra Barrosa [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period |  |  |  |  |  |  |  |  |  |  | 2017 |  |  |  |  |  |  |  |  |  |  |
Province of Neuquen [member] | Loma Campana [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exploitation of concession a surface area | km² |  |  |  |  |  |  |  | 395 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period |  |  |  |  |  |  |  | 22 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province of Neuquen [member] | Loma La Lata - Loma Campana [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of consideration of surface area |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 |  |  |  |  |  |
Conventional production payable period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 days |  |  |  |  |  |
Province of Neuquen [member] | Rincon Del Mangrullo Block [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments fees of disbursement and investment program |  | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 150,000,000 |  |  |  |  |
Drilled wells | Wells |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 |  |  |  |  |
Province of Neuquen [member] | Rincon Del Mangrullo Block [member] | Petrolera Pampa SA [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition percentage of equity interest |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Province of Mendoza [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |
Percentage of an extraordinary production royalty |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |  |
Investments and expenditures in the production concessions that are the purpose of the agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,113,000,000 |  |  |  |  |  |  |
Province of initial payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 135,000,000 |  |  |  |  |  |  |
Percentage portion of annual payments of an extraordinary production royalty |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.30% |  |  |  |  |  |  |
Province of Santa Cruz [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period |  |  |  |  |  |  |  |  |  |  |  |  | 25 years |  |  |  |  |  |  |  |  |
Province of initial payments |  |  |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |
Percentage of production royalty |  |  |  |  |  |  |  |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |
Percentage of contribute with social infrastructure investments |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |  |  |  |  |
Province of Santa Cruz [member] | Unconventional hydrocarbons [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of production royalty |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |
Salta [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
Investments and expenditures in the production concessions that are the purpose of the agreements |  |  |  |  |  |  |  |  | $ 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum payments for minimum amount in development plans involving the drilling of development wells |  |  |  |  |  |  |  |  | $ 36,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of province special extraordinary contribution |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of production royalty |  |  |  |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of extraordinary income verified in the marketing of oil crude production (in USD/bbl) |  |  |  |  |  |  |  |  | $ 90 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of import gas prices |  |  |  |  |  |  |  |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Province and proportion of bonus extension |  |  |  |  |  |  |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Salta [Member] | Amendment [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum amount of drilling cost |  |  | $ 26,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of development wells | Well |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exploration well for an amount |  |  | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Executive Branch [member] | Magallanes area [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended period | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exploitation concessions, extended term |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of extended agreement of concessions |  |  |  | Nov. 14, 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension bonus payment |  |  |  | $ 12,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalties percentage on hydrocarbons production |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Los Chorrillos [member] | Province Tierra del Fuego [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of extended agreement of concessions |  |  |  |  |  | Apr. 18, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lago Fuego [member] | Province Tierra del Fuego [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of extended agreement of concessions |  |  |  |  |  | Nov. 06, 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Los Caldenes [member] | Province of Rio Negro [member] | YPF Sociedad Anonima [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |
Date of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Sep. 19, 2036 |  |  |
Estacion Fernandez Oro [member] | Province of Rio Negro [member] | YSUR Energia Argentina S.R.L [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |
Date of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Aug. 16, 2026 |  |  |
El Santiagueno [member] | Province of Rio Negro [member] | YSUR Energia Argentina S.R.L [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |
Date of holding in exploitation concessions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Sep. 06, 2025 |  |  |
Tierra Del Fuego [member] | Magallanes area [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension bonus payment | $ 7,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalties percentage on hydrocarbons production | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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