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Here's a very straightforward version that implements
"given a 7-min timer & a 4-min egg timer"
rather than
"given unlimited 7-min timers & unlimited 4-min egg timers
It's unclear what the OP intended.

use List::Util qw( min ); use List::MoreUtils qw( any ); my $target = 5; my @max = (7, 4); my $time = 0; my @status = (0) x @max; my %seen; for (;;) { die("Unable to solve the problem\n") if $seen{join('|', @status)}++; foreach (0..$#status) { next if $status[$_]; $status[$_] = $max[$_]; print("$time: begin $max[$_]\n"); } last if any { $_ == $target } @status; my $elapsed_time = min(@status); $status[$_] = $status[$_] - $elapsed_time foreach 0..$#status; $time += $elapsed_time; } print("$time: begin cooking\n"); $time += $target; print("$time: end cooking\n");
0: begin 7 0: begin 4 4: begin 4 7: begin 7 8: begin 4 12: begin 4 14: begin 7 16: begin 4 16: begin cooking 21: end cooking

I don't support putting the timer's on hold, but that's just laziness on my end :)

.oO( Why aren't Scalar::Util, List::Util and List::MoreUtils core modules? I wouldn't mind if the function in those modules were core functions! )

In reply to Re: Challenge: Egg Timer Puzzles by ikegami
in thread Challenge: Egg Timer Puzzles by Limbic~Region

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