13 lines
277 B
OCaml
13 lines
277 B
OCaml
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let rec factorial n =
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let rec loop acc = function
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| 0 -> acc
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| n -> loop (Z.mul (Z.of_int n) acc) (n - 1)
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in loop Z.one n
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let () =
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if not !Sys.interactive then
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begin
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Sys.argv.(1) |> int_of_string |> factorial |> Z.print;
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print_newline ()
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end
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