Cody™

Cody5:Hard

Curated by : Cody Team

Hard problems for Cody 5th Anniversary.

Cody5:Hard Master

+50 points

Select all problems
Problem Title
Likes
Solvers

Birthday cake

Created by: Matthew Eicholtz

Tags geometry, cody5:hard

5

50

Parse me a Lisp

Created by: @bmtran (Bryant Tran)

Tags cody5, lisp, parse

2

56

Cache me Outside

Created by: @bmtran (Bryant Tran)

Tags cody5, memoize

2

65

One track five lanes

Created by: Alfonso Nieto-Castanon

Tags cody5

3

39

Five-dimensional maze

Created by: @bmtran (Bryant Tran)

Tags cody5, maze, graph theory

2

32

Five steps to enlightenment

Created by: Alfonso Nieto-Castanon

Tags cody5, logic, indexing

4

32

The sliding puzzle: 3D

Created by: HH

Tags sliding, puzzle, 15

6

29

Tautology

Created by: Jan Orwat

Tags regular expressions, cody5

3

33

Inscribed Pentagon? 2

Created by: goc3

Tags five, pentagon, inscribed

0

57

An asteroid and a spacecraft

Created by: AMITAVA BISWAS

Tags star war, spacecraft, projectile

4

116

Is this a valid Tic Tac Toe State?

Created by: Doug Hull

Tags cody5

3

82

5th Time's a Charm

Created by: goc3

Tags five, charm, fail

5

144

Group-wise Euclidean distance

Created by: Peng Liu

Tags cody5, speed

5

51

Ned's Queens

Created by: HH

Tags cody5, contest

2

46

The 5th Root

Created by: goc3

Tags power, root, five

7

419

Pair Primes

Created by: Mehmet OZC

Tags prime numbers, integers, cody5

4

60

Hexagonal numbers on a spiral matrix

Created by: Mehmet OZC

Tags hexagonal numbers, spiral matrix, big integer

1

65

Recaman Sequence - III

Created by: Mehmet OZC

Tags recaman sequence, cody5

0

57

Sums of Distinct Powers

Created by: James

Tags distinct powers, cody5, binary

5

116

Pandigital Multiples of 11 (based on Project Euler 491)

Created by: James

Tags cody5, pandigital, projecteuler

4

36

"Cody" * 5 == "CodyCodyCodyCodyCody"

Created by: Peng Liu

Tags cody5, string, multiplication

5

187

Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

Tags fibonacci, big number, even number

3

280

Digit concentration in Champernowne's constant

Created by: Mehmet OZC

Tags champernowne's constant, big number, cody5

4

94

Acid and water

Created by: AMITAVA BISWAS

Tags exponential decay, fluid mixture, cody5

1

187

Group Finishers20

Recent Activity

Mu received Cody5:Hard Master badge

1 hour and 34 minutes ago

Mu submitted Solution 1707681 to Problem 44376. The sliding puzzle: 3D

1 hour and 34 minutes ago

KYOHYUN LEE submitted Solution 1707094 to Problem 44344. The 5th Root

on 15 Jan 2019 at 5:19

KYOHYUN LEE submitted Solution 1707093 to Problem 44344. The 5th Root

on 15 Jan 2019 at 5:19

PurpleDiab submitted Solution 1706903 to Problem 281. Acid and water

on 14 Jan 2019 at 10:12