# Problems

1 – 22 of 22
 Problem Title Likes Solvers Difficulty

#### Problem 44381. Cache me Outside

Created by: @bmtran (Bryant Tran)

Tags cody5, memoize

5

90

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

Created by: Mehmet OZC

15

924

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

Created by: Doug Hull

Tags cody5

4

108

#### Problem 281. Acid and water

Created by: AMITAVA BISWAS

1

241

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

Created by: AMITAVA BISWAS

5

151

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

Created by: Mehmet OZC

5

114

#### Problem 44344. The 5th Root

Created by: goc3

Tags root, power, cody5

12

531

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

Created by: Mehmet OZC

2

98

Created by: goc3

2

76

#### Problem 44337. Sums of Distinct Powers

Created by: James

6

143

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

Created by: James

5

44

#### Problem 44340. Recaman Sequence - III

Created by: Mehmet OZC

2

76

Created by: goc3

6

174

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

Created by: Peng Liu

Tags speed, cody5

6

68

#### Problem 44374. Tautology

Created by: Jan Orwat

3

40

#### Problem 44382. Parse me a Lisp

Created by: @bmtran (Bryant Tran)

Tags lisp, parse, cody5

4

81

#### Problem 44379. One track five lanes

Created by: Alfonso Nieto-Castanon

Tags cody5

4

62

Created by: HH

13

50

#### Problem 44343. Pair Primes

Created by: Mehmet OZC

8

96

#### Problem 44347. Ned's queens

Created by: HH

Tags contest, cody5

4

57

#### Problem 44377. Five steps to enlightenment

Created by: Alfonso Nieto-Castanon

6

35

#### Problem 44378. Five-dimensional maze

Created by: @bmtran (Bryant Tran)

3

40

1 – 22 of 22