Cody5:Hard

Hard problems for Cody 5th Anniversary.

Cody5:Hard Master

+50 points

Problem Title	Likes	Solvers
Problem 44387. Birthday cake Created by: Matthew Eicholtz Tags geometry, cody5:hard	6	65
Problem 44382. Parse me a Lisp Created by: @bmtran (Bryant Tran) Tags cody5, lisp, parse	2	63
Problem 44381. Cache me Outside Created by: @bmtran (Bryant Tran) Tags cody5, memoize	2	71
Problem 44379. One track five lanes Created by: Alfonso Nieto-Castanon Tags cody5	3	47
Problem 44378. Five-dimensional maze Created by: @bmtran (Bryant Tran) Tags cody5, maze, graph theory	2	36
Problem 44377. Five steps to enlightenment Created by: Alfonso Nieto-Castanon Tags cody5, logic, indexing	5	34
Problem 44376. The sliding puzzle: 3D Created by: HH Tags sliding, puzzle, 15	7	33
Problem 44374. Tautology Created by: Jan Orwat Tags regular expressions, cody5	3	38
Problem 44367. Inscribed Pentagon? 2 Created by: goc3 Tags five, pentagon, inscribed	1	64
Problem 44365. An asteroid and a spacecraft Created by: AMITAVA BISWAS Tags star war, spacecraft, projectile	4	129
Problem 44364. Is this a valid Tic Tac Toe State? Created by: Doug Hull Tags cody5	3	92
Problem 44359. 5th Time's a Charm Created by: goc3 Tags five, charm, fail	5	156
Problem 44353. Group-wise Euclidean distance Created by: Peng Liu Tags cody5, speed	5	57
Problem 44347. Ned's queens Created by: HH Tags cody5, contest	2	50
Problem 44344. The 5th Root Created by: goc3 Tags power, root, five	8	477
Problem 44343. Pair Primes Created by: Mehmet OZC Tags prime numbers, integers, cody5	4	65
Problem 44341. Hexagonal numbers on a spiral matrix Created by: Mehmet OZC Tags hexagonal numbers, spiral matrix, big integer	0	69
Problem 44340. Recaman Sequence - III Created by: Mehmet OZC Tags recaman sequence, cody5	0	66
Problem 44337. Sums of Distinct Powers Created by: James Tags distinct powers, cody5, binary	5	124
Problem 44316. Pandigital Multiples of 11 (based on Project Euler 491) Created by: James Tags cody5, pandigital, projecteuler	4	40
Problem 44313. "Cody" * 5 == "CodyCodyCodyCodyCody" Created by: Peng Liu Tags cody5, string, multiplication	6	190
Problem 44311. Number of Even Elements in Fibonacci Sequence Created by: Mehmet OZC Tags fibonacci, big number, even number	4	446
Problem 44310. Digit concentration in Champernowne's constant Created by: Mehmet OZC Tags champernowne's constant, big number, cody5	4	103
Problem 281. Acid and water Created by: AMITAVA BISWAS Tags exponential decay, fluid mixture, cody5	1	211

Recent Group Finishers23

Recent Activity

	avner yakov submitted Solution 2134092 to Problem 44311. Number of Even Elements in Fibonacci Sequence on 19 Feb 2020 at 20:52
	Nikolaos Nikolaou submitted Solution 2131294 to Problem 281. Acid and water on 17 Feb 2020 at 16:02
	Hans Kramer submitted Solution 2123892 to Problem 44343. Pair Primes on 10 Feb 2020 at 13:31
	avner yakov submitted Solution 2122438 to Problem 44367. Inscribed Pentagon? 2 on 8 Feb 2020 at 20:29
	Abel Szkalisity submitted Solution 2121565 to Problem 44387. Birthday cake on 7 Feb 2020 at 22:01