Quote:
Originally Posted by SmartMersenne
I really doubt that it will come anywhere close to July20.
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I wish I could call you "pessimistic".
Looking at the past three years, Oct20 seems somehow similar to Nov17, another "find-constrained-algorithm" challenge. Nov17 was actually solved by 23 people only.
On the other hand, both Oct20 and July20 deal with linear-recurrenced sequences, candidate solutions can be analyzed with similar linear algebra methods.
About CHAOS, I found it useful to know that the following kind of instruction is permitted:
30 CHAOS 30, 40, 50, ...
so that the control flow graph has an edge from a one-line block to itself.