Cody5:Hard

Average Problem Difficulty:

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	10	96
Problem 44343. Pair Primes Created by: Mehmet OZC Tags integers, prime numbers, cody5	9	103
"Cody" * 5 == "CodyCodyCodyCodyCody" Created by: Peng Liu Tags multiplication, string, cody5	7	191
Problem 44340. Recaman Sequence - III Created by: Mehmet OZC Tags cody5, recaman sequence	2	85
Problem 44382. Parse me a Lisp Created by: @bmtran (Bryant Tran) Tags lisp, parse, cody5	6	86
Problem 44381. Cache me Outside Created by: @bmtran (Bryant Tran) Tags cody5, memoize	5	96
Problem 44379. One track five lanes Created by: Alfonso Nieto-Castanon Tags cody5	6	70
Problem 44378. Five-dimensional maze Created by: @bmtran (Bryant Tran) Tags maze, graph theory, multidimensional	4	44
Problem 44377. Five steps to enlightenment Created by: Alfonso Nieto-Castanon Tags indexing, logic, cody5	6	39
Problem 44376. The sliding puzzle: 3D Created by: HH Tags puzzle, sliding, fifteen	14	49
Problem 44374. Tautology Created by: Jan Orwat Tags regular expressions, cody5	3	42
Problem 44367. Inscribed Pentagon? 2 Created by: goc3 Tags geometry, circle, radius	2	82
Problem 44365. An asteroid and a spacecraft Created by: AMITAVA BISWAS Tags projectile, mechanics, cody5	5	159
Problem 44364. Is this a valid Tic Tac Toe State? Created by: Doug Hull Tags cody5	4	118
Problem 44359. 5th Time's a Charm Created by: goc3 Tags approximation, cody5, five	7	186
Problem 44353. Group-wise Euclidean distance Created by: Peng Liu Tags speed, cody5	7	72
Problem 44347. Ned's queens Created by: HH Tags contest, cody5	6	81
Problem 44344. The 5th Root Created by: goc3 Tags root, power, cody5	13	550
Problem 44341. Hexagonal numbers on a spiral matrix Created by: Mehmet OZC Tags big integer, cody5, hexagonal numbers	2	140
Problem 44337. Sums of Distinct Powers Created by: James Tags binary, cody5, distinct powers	6	153
Problem 44316. Pandigital Multiples of 11 (based on Project Euler 491) Created by: James Tags projecteuler, pandigital, cody5	5	47
Problem 44311. Number of Even Elements in Fibonacci Sequence Created by: Mehmet OZC Tags fibonacci, cody5, big number	19	1427
Problem 44310. Digit concentration in Champernowne's constant Created by: Mehmet OZC Tags cody5, champernowne's constant, big number	5	120
Problem 281. Acid and water Created by: AMITAVA BISWAS Tags cody5, exponential decay, fluid mixture	2	253

Recent Group Finishers8

Recent Activity

	Paul Bower submitted Solution 14529423 to Problem 44344. The 5th Root on 23 Jan 2025 at 2:06
	Xinyi Xu submitted Solution 14525663 to Problem 44311. Number of Even Elements in Fibonacci Sequence on 17 Jan 2025 at 1:13
	Miah submitted Solution 14497653 to Problem 44311. Number of Even Elements in Fibonacci Sequence on 16 Dec 2024
	Marcos Silveira submitted Solution 14469885 to Problem 44311. Number of Even Elements in Fibonacci Sequence on 11 Dec 2024
	Tran submitted Solution 14468615 to Problem 44311. Number of Even Elements in Fibonacci Sequence on 11 Dec 2024

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Cody5:Hard

"Cody" * 5 == "CodyCodyCodyCodyCody"

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