Source paper: released examination archive, member 2015/T/a10098w1.pdf; original cover dated 2016-06-15. The archive member's directory is not the examination year.
Source paper: released examination archive, member 2015/T/a10101w1.pdf; original cover dated 2016-06-16. The cover establishes the examination year despite the archive directory name.
The original cover establishes the date as 19 June 2015. The solutions use the printed question numbering and the natural deduction rules supplied with this paper.[ref]
Solutions to all eight questions of the 18 June 2014 paper. The Scala fragments use the paper's Scala 2 style. Unless stated otherwise, array dimensions and array indices meet the supplied preconditions, and size calculations fit Int.[ref]
The solutions use the original 17 June 2014 preliminary examination, code 4208.[ref] Haskell definitions use separate question namespaces; names suffixed F or U distinguish alternative implementations. For Question 4, use import Prelude hiding (foldr, (++), concat, flip) when compiling the definitions together. Unless an infinite input is discussed explicitly, inputs are finite and total. Arithmetic operation counts do not include the growing bit costs of exact integers.[ref]
The original cover dates this paper to 20 June 2014. The solutions follow the printed numbering and use the supplied natural deduction rules, including double-negation elimination. In the proof tables, the context column lists the numbered assumptions still in force; temporary assumptions are explicitly discharged by the indicated rule.[ref]

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