# Problems

1 – 23 of 23
 Problem Title Likes Solvers Difficulty

#### Problem 44381. Cache me Outside

Created by: @bmtran (Bryant Tran)

Tags cody5, memoize

5

96

#### Problem 44311. Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

18

1257

#### Problem 44310. Digit concentration in Champernowne's constant

Created by: Mehmet OZC

5

120

Created by: goc3

2

82

#### Problem 44365. An asteroid and a spacecraft

Created by: AMITAVA BISWAS

5

158

#### Problem 281. Acid and water

Created by: AMITAVA BISWAS

2

252

#### Problem 44364. Is this a valid Tic Tac Toe State?

Created by: Doug Hull

Tags cody5

4

117

#### Problem 44340. Recaman Sequence - III

Created by: Mehmet OZC

2

84

#### Problem 44344. The 5th Root

Created by: goc3

Tags root, power, cody5

13

547

#### Problem 44337. Sums of Distinct Powers

Created by: James

6

151

Created by: goc3

7

184

#### Problem 44341. Hexagonal numbers on a spiral matrix

Created by: Mehmet OZC

2

127

#### Problem 44353. Group-wise Euclidean distance

Created by: Peng Liu

Tags speed, cody5

7

72

#### Problem 44316. Pandigital Multiples of 11 (based on Project Euler 491)

Created by: James

5

47

#### Problem 44374. Tautology

Created by: Jan Orwat

3

42

#### Problem 44382. Parse me a Lisp

Created by: @bmtran (Bryant Tran)

Tags lisp, parse, cody5

6

86

#### Problem 44347. Ned's queens

Created by: HH

Tags contest, cody5

5

74

#### Problem 44387. Birthday cake

Created by: Matthew Eicholtz

10

97

#### Problem 44343. Pair Primes

Created by: Mehmet OZC

9

103

#### Problem 44379. One track five lanes

Created by: Alfonso Nieto-Castanon

Tags cody5

6

70

#### Problem 44377. Five steps to enlightenment

Created by: Alfonso Nieto-Castanon

6

39

#### Problem 44378. Five-dimensional maze

Created by: @bmtran (Bryant Tran)

4

44

Created by: HH

13

49

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