> Determine Dr. Leroy's involvement in JFK assassination 180

Should take less time than this, given that I wasn't born at that time :-)

As everyone else, I'll point out that your code can be shortened and
made more readable by judicious use of printf and regexps (see below).
But really, if this is the kind of programs you're interested in
(text-based I/O with no data structures), forget about C++ and Caml,
and use Perl.

- Xavier Leroy

open Printf

let print_time m =
  let hours = (m / 60) mod 24 and minutes = m mod 60 in
  printf "%2d:%02d%s"
         (if hours > 12 then hours - 12 else hours)
         minutes
         (if hours > 12 then "pm" else "am")

let print_duration m =
  let hours = (m / 60) mod 24 and minutes = m mod 60 in
  printf "%2d:%02d" hours minutes

let re = Str.regexp "\\(.*\\)[ \t]+\\([0-9]+\\)$"

let split_string s =
  if Str.string_match re s 0
  then (Str.matched_group 1 s, int_of_string (Str.matched_group 2 s))
  else failwith "bad line"
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