# Problems

1 – 50 of 54
 Problem Title Likes Solvers Difficulty

#### Problem 361. Energy of a photon

Created by: AMITAVA BISWAS

13

1389

#### Problem 369. Basic electricity in a dry situation

Created by: AMITAVA BISWAS

6

547

#### Problem 44315. Predicting life and death of a memory-less light bulb

Created by: AMITAVA BISWAS

2

321

#### Problem 44370. Octoberfest festival

Created by: Andriy Kavetsky

3

472

#### Problem 44314. A Simple Tide Gauge with MATLAB

Created by: AMITAVA BISWAS

4

374

Created by: goc3

0

310

#### Problem 2736. Pernicious Anniversary Problem

Created by: Jan Orwat

12

814

#### Problem 564. How to subtract?

Created by: AMITAVA BISWAS

Tags addition, cody5, X-Y

7

1500

#### Problem 44384. Find the nearest prime number

Created by: Matthew Eicholtz

8

627

#### Problem 44363. Is this is a Tic Tac Toe X Win?

Created by: Doug Hull

2

505

Created by: goc3

5

407

#### Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

11

728

#### Problem 44381. Cache me Outside

Created by: @bmtran (Bryant Tran)

Tags cody5, memoize

5

95

Created by: goc3

12

642

#### Problem 44321. Van Eck's Sequence's nth member

Created by: Mehmet OZC

12

317

#### Problem 44319. Write c^3 as sum of two squares a^2+b^2

Created by: Mehmet OZC

2

313

#### Problem 44342. Spot the First Occurrence of 5

Created by: Peng Liu

Tags cody5

2

414

#### Problem 44307. The glass half full

Created by: HH

Tags contest, cody5

8

251

#### Problem 44334. Sums of Multiple Pairs of Triangular Numbers

Created by: James

1

232

#### Problem 44338. Recaman Sequence - I

Created by: Mehmet OZC

3

304

Created by: goc3

2

291

Created by: goc3

7

433

#### Problem 44349. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.

Created by: James

Tags time, cody5

13

932

#### Problem 44339. Recaman Sequence - II

Created by: Mehmet OZC

1

266

#### Problem 44372. Polarisation

Created by: Jan Orwat

3

254

#### Problem 44375. Missing five

Created by: Alfonso Nieto-Castanon

Tags cody5

8

355

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

Created by: Mehmet OZC

18

1243

#### 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

251

#### Problem 44340. Recaman Sequence - III

Created by: Mehmet OZC

2

84

#### Problem 44352. The Top 5 Primes

Created by: Peng Liu

Tags cody5

6

316

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

Created by: Doug Hull

Tags cody5

4

116

#### Problem 44344. The 5th Root

Created by: goc3

Tags root, power, cody5

12

546

#### Problem 44337. Sums of Distinct Powers

Created by: James

6

151

#### Problem 44350. Breaking Out of the Matrix

Created by: James

8

345

Created by: goc3

2

63

Created by: goc3

7

182

Created by: goc3

7

308

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

Created by: Mehmet OZC

2

126

#### Problem 44309. Pi Digit Probability

Created by: Mehmet OZC

11

515

#### Problem 44380. ASCII Birthday Cake

Created by: @bmtran (Bryant Tran)

Tags art, birthday, ascii

10

219

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

Created by: Peng Liu

Tags speed, cody5

6

72

#### Problem 44345. MATLAB Counter

Created by: Peng Liu

22

256

#### 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 44343. Pair Primes

Created by: Mehmet OZC

9

103

1 – 50 of 54