All Contributions

Complete record of every solution change. Each contribution is peer-reviewed.

Contribute

19841 contributions

1936 problems

99 contributors

solved· 6.5.12

6.5.12 new solution

heisei September 8, 2025 at 03:48 PM

#15459

9 hours 38 minutes between problems

solved· 2.6.40 in 1 minute 7 seconds

2.6.40 edit

differ4ik September 8, 2025 at 06:09 AM

#15458

2.6.40 edit

differ4ik September 8, 2025 at 06:09 AM

#15457

2.6.40 edit

differ4ik September 8, 2025 at 06:08 AM

#15456

55 minutes between problems

solved· 2.6.36

2.6.36 edit

differ4ik September 8, 2025 at 05:13 AM

#15455

10 hours 49 minutes between problems

solved· 1.2.10 in 2 minutes 22 seconds

1.2.10 edit

Yarocrafter September 7, 2025 at 06:23 PM

#15454

1.2.10 edit

Yarocrafter September 7, 2025 at 06:21 PM

#15453

27 minutes between problems

solved· 1.2.11 in 11 minutes 23 seconds

1.2.11 edit

Yarocrafter September 7, 2025 at 05:54 PM

#15452

1.2.11 edit

Yarocrafter September 7, 2025 at 05:45 PM

#15451

1.2.11 edit

Yarocrafter September 7, 2025 at 05:44 PM

#15450

1.2.11 edit

Yarocrafter September 7, 2025 at 05:43 PM

#15449

1.2.11 edit

Yarocrafter September 7, 2025 at 05:42 PM

#15448

1 hour 15 minutes between problems

solved· 2.7.6

2.7.6 edit

Anonymous September 7, 2025 at 04:27 PM

#15447

2 hours 14 minutes between problems

solved· 1.2.11 in 2 minutes 15 seconds

1.2.11 edit

Yarocrafter September 7, 2025 at 02:12 PM

#15446

1.2.11 edit

Yarocrafter September 7, 2025 at 02:10 PM

#15445

6 hours 46 minutes between problems

solved· 2.5.14 in 43 minutes 16 seconds

2.5.14 edit

emixter September 7, 2025 at 07:24 AM

#15444

2.5.14 new solution

emixter September 7, 2025 at 06:40 AM

#15443

12 hours between problems

solved· 7.4.15

7.4.15 edit

emixter September 6, 2025 at 06:40 PM

#15442

47 minutes between problems

solved· 2.6.30

2.6.30 edit

differ4ik September 6, 2025 at 05:52 PM

#15441

17 minutes between problems

solved· 7.4.15

7.4.15 new solution

emixter September 6, 2025 at 05:35 PM

#15440

4 hours 30 minutes between problems

solved· 7.4.13 in 1 hour 55 minutes

7.4.13 edit

emixter September 6, 2025 at 01:05 PM

#15439

7.4.13 new solution

emixter September 6, 2025 at 11:09 AM

#15438

13 hours 27 minutes between problems

solved· 1.1.10 in 17 seconds

1.1.10 edit

Anonymous September 5, 2025 at 09:42 PM

#15437

1.1.10 edit

Anonymous September 5, 2025 at 09:41 PM

#15436

3 hours 18 minutes between problems

solved· 14.5.7 in 20 minutes 53 seconds

14.5.7 edit

emixter September 5, 2025 at 06:22 PM

#15435

14.5.7 new solution

emixter September 5, 2025 at 06:01 PM

#15434

2 hours 8 minutes between problems

solved· 14.5.3 in 1 hour 13 minutes

14.5.3 edit

emixter September 5, 2025 at 03:53 PM

#15433

14.5.3 new solution

emixter September 5, 2025 at 02:40 PM

#15432

19 hours 19 minutes between problems

solved· 4.6.15

4.6.15 edit

astrosander September 4, 2025 at 07:20 PM

#15431

less than a minute between problems

solved· 1.1.12 in 1 minute 1 second

1.1.12 edit

astrosander September 4, 2025 at 07:19 PM

#15430

1.1.12 edit

astrosander September 4, 2025 at 07:18 PM

#15429

1 minute between problems

solved· 11.4.13 in 2 hours 17 minutes

11.4.13 edit

astrosander September 4, 2025 at 07:17 PM

#15428

11.4.13 edit

astrosander September 4, 2025 at 07:16 PM

#15427

11.4.13 edit

Anonymous September 4, 2025 at 05:02 PM

#15426

11.4.13 new solution

Anonymous September 4, 2025 at 05:00 PM

#15425

9 hours 58 minutes between problems

solved· 2.5.29 in 57 minutes 47 seconds

2.5.29 edit

emixter September 4, 2025 at 07:01 AM

#15424

2.5.29 new solution

emixter September 4, 2025 at 06:04 AM

#15423

12 hours 19 minutes between problems

solved· 1.1.12

1.1.12 edit

Anonymous September 3, 2025 at 05:44 PM

#15422

4 minutes between problems

solved· 1.4.15

1.4.15 edit

giorgiotinashvili September 3, 2025 at 05:39 PM

#15421

1 hour 24 minutes between problems

solved· 9.2.7

9.2.7 edit

ar4senN September 3, 2025 at 04:15 PM

#15420

2 hours 2 minutes between problems

solved· 1.1.12 in 7 minutes

1.1.12 edit

Anonymous September 3, 2025 at 02:13 PM

#15419

1.1.12 edit

Anonymous September 3, 2025 at 02:06 PM

#15418

1.1.12 edit

Anonymous September 3, 2025 at 02:06 PM

#15417

37 minutes between problems

solved· 2.5.8 in 51 minutes 35 seconds

2.5.8 edit

emixter September 3, 2025 at 01:28 PM

#15416

2.5.8 new solution

emixter September 3, 2025 at 12:36 PM

#15415

20 hours 1 minute between problems

solved· 4.5.8 in 28 minutes 22 seconds

4.5.8 edit

emixter September 2, 2025 at 04:35 PM

#15414

4.5.8 new solution

emixter September 2, 2025 at 04:07 PM

#15413

2 hours 36 minutes between problems

solved· 4.5.7 in 34 minutes 58 seconds

4.5.7 edit

emixter September 2, 2025 at 01:30 PM

#15412

4.5.7 edit

emixter September 2, 2025 at 01:15 PM

#15411

4.5.7 new solution

emixter September 2, 2025 at 12:55 PM

#15410

2 hours 32 minutes between problems

solved· 14.4.21 in 24 minutes 30 seconds

14.4.21 edit

emixter September 2, 2025 at 10:22 AM

#15409

14.4.21 new solution

emixter September 2, 2025 at 09:58 AM

#15408

2 hours 30 minutes between problems

solved· 14.4.20 in 1 hour 16 minutes

14.4.20 edit

emixter September 2, 2025 at 07:27 AM

#15407

14.4.20 new solution

emixter September 2, 2025 at 06:11 AM

#15406

22 hours 1 minute between problems

solved· 2.8.12 in 1 hour 4 minutes

2.8.12 edit

Sergey_Kuleshov September 1, 2025 at 08:09 AM

#15405

2.8.12 edit

Sergey_Kuleshov September 1, 2025 at 08:09 AM

#15404

2.8.12 edit

Sergey_Kuleshov September 1, 2025 at 08:09 AM

#15403

2.8.12 comment

Sergey_Kuleshov September 1, 2025 at 08:07 AM

thread

2.8.12 comment

igor September 1, 2025 at 07:55 AM

thread

2.8.12 edit

Sergey_Kuleshov September 1, 2025 at 07:10 AM

#15402

2.8.12 new solution

Sergey_Kuleshov September 1, 2025 at 07:04 AM

#15401

12 hours 21 minutes between problems

solved· 4.6.15 in 2 hours 12 minutes

4.6.15 edit

emixter August 31, 2025 at 06:43 PM

#15400

4.6.15 edit

emixter August 31, 2025 at 06:43 PM

#15399

4.6.15 edit

heisei August 31, 2025 at 04:32 PM

#15398

4.6.15 new solution

heisei August 31, 2025 at 04:30 PM

#15397

4 hours 8 minutes between problems

solved· 14.4.27 in 6 hours 34 minutes

14.4.27 edit

emixter August 31, 2025 at 12:22 PM

#15396

14.4.27 edit

emixter August 31, 2025 at 06:54 AM

#15395

14.4.27 edit

emixter August 31, 2025 at 06:52 AM

#15394

14.4.27 new solution

emixter August 31, 2025 at 05:48 AM

#15393

10 hours 33 minutes between problems

solved· 2.5.38

2.5.38 edit

giorgiotinashvili August 30, 2025 at 07:15 PM

#15392

10 hours 6 minutes between problems

solved· 7.1.16 in 42 minutes 45 seconds

7.1.16 edit

emixter August 30, 2025 at 09:08 AM

#15391

7.1.16 new solution

emixter August 30, 2025 at 08:26 AM

#15390

15 hours 42 minutes between problems

solved· 7.3.8 in 1 hour 53 minutes

7.3.8 edit

emixter August 29, 2025 at 04:43 PM

#15389

7.3.8 new solution

emixter August 29, 2025 at 02:50 PM

#15388

6 hours 40 minutes between problems

solved· 14.2.3 in 1 hour 38 minutes

14.2.3 edit

emixter August 29, 2025 at 08:09 AM

#15387

14.2.3 new solution

emixter August 29, 2025 at 06:31 AM

#15386

22 hours 40 minutes between problems

solved· 14.2.8 in 20 minutes 21 seconds

14.2.8 edit

emixter August 28, 2025 at 07:50 AM

#15385

14.2.8 new solution

emixter August 28, 2025 at 07:30 AM

#15384

15 minutes between problems

solved· 14.2.7 in 25 minutes 8 seconds

14.2.7 edit

emixter August 28, 2025 at 07:15 AM

#15383

14.2.7 edit

emixter August 28, 2025 at 06:49 AM

#15382

16 hours 21 minutes between problems

solved· 4.4.8

4.4.8 edit

Anonymous August 27, 2025 at 02:28 PM

#15381

3 minutes between problems

solved· 3.6.28 in 9 minutes 38 seconds

3.6.28 edit

Anonymous August 27, 2025 at 02:24 PM

#15380

3.6.28 new solution

Anonymous August 27, 2025 at 02:14 PM

#15379

21 minutes between problems

solved· 4.4.8 in 10 minutes 8 seconds

4.4.8 edit

Anonymous August 27, 2025 at 01:52 PM

#15378

4.4.8 new solution

Anonymous August 27, 2025 at 01:42 PM

#15377

14 minutes between problems

solved· 11.2.12 in 15 minutes 9 seconds

11.2.12 edit

Anonymous August 27, 2025 at 01:28 PM

#15376

11.2.12 edit

Anonymous August 27, 2025 at 01:27 PM

#15375

11.2.12 edit

Anonymous August 27, 2025 at 01:27 PM

#15374

11.2.12 new solution

Anonymous August 27, 2025 at 01:12 PM

#15373

4 minutes between problems

solved· 6.5.23 in 1 hour 27 minutes

6.5.23 edit

Anonymous August 27, 2025 at 01:08 PM

#15372

6.5.23 edit

Anonymous August 27, 2025 at 01:03 PM

#15371

6.5.23 edit

Anonymous August 27, 2025 at 01:03 PM

#15370

6.5.23 edit

Anonymous August 27, 2025 at 11:51 AM

#15369

6.5.23 new solution

Anonymous August 27, 2025 at 11:40 AM

#15368

39 minutes between problems

solved· 4.2.18

4.2.18 edit

astrosander August 27, 2025 at 11:01 AM

#15367

1 minute between problems

solved· 4.2.17

4.2.17 edit

astrosander August 27, 2025 at 11:00 AM

#15366

3 minutes between problems

solved· 4.2.18

4.2.18 edit

astrosander August 27, 2025 at 10:56 AM

#15365

14 hours 47 minutes between problems

solved· 2.2.40 in 1 hour 21 minutes

2.2.40 edit

emixter August 26, 2025 at 08:09 PM

#15364

2.2.40 new solution

emixter August 26, 2025 at 06:47 PM

#15363

4 hours 50 minutes between problems

solved· 6.3.9 in 20 minutes 43 seconds

6.3.9 edit

emixter August 26, 2025 at 01:56 PM

#15362

6.3.9 new solution

emixter August 26, 2025 at 01:35 PM

#15361

15 minutes between problems

solved· 6.3.8 in 11 minutes 24 seconds

6.3.8 edit

emixter August 26, 2025 at 01:20 PM

#15360

6.3.8 new solution

emixter August 26, 2025 at 01:09 PM

#15359

6 hours 41 minutes between problems

solved· 10.2.3 in 55 minutes 29 seconds

10.2.3 edit

emixter August 26, 2025 at 06:27 AM

#15358

10.2.3 new solution

emixter August 26, 2025 at 05:32 AM

#15357

15 hours between problems

solved· 2.4.25

2.4.25 edit

emixter August 25, 2025 at 02:31 PM

#15356

1 hour 22 minutes between problems

solved· 1.4.3

1.4.3 edit

Anonymous August 25, 2025 at 01:09 PM

#15355

2 hours 8 minutes between problems

solved· 2.7.27

2.7.27 edit

Anonymous August 25, 2025 at 11:00 AM

#15354

1 hour 6 minutes between problems

solved· 2.4.25 in 1 hour 15 minutes

2.4.25 edit

emixter August 25, 2025 at 09:53 AM

#15353

2.4.25 edit

emixter August 25, 2025 at 09:36 AM

#15352

2.4.25 new solution

emixter August 25, 2025 at 08:38 AM

#15351

50 minutes between problems

solved· 2.4.24 in 49 minutes 39 seconds

2.4.24 edit

emixter August 25, 2025 at 07:48 AM

#15350

2.4.24 new solution

emixter August 25, 2025 at 06:58 AM

#15349

15 hours 53 minutes between problems

solved· 14.1.12 in 8 minutes 9 seconds

14.1.12 edit

emixter August 24, 2025 at 03:05 PM

#15348

14.1.12 new solution

emixter August 24, 2025 at 02:57 PM

#15347

4 minutes between problems

solved· 14.1.11 in 20 minutes 33 seconds

14.1.11 edit

emixter August 24, 2025 at 02:52 PM

#15346

14.1.11 new solution

emixter August 24, 2025 at 02:31 PM

#15345

5 hours 9 minutes between problems

solved· 8.1.7 in 1 hour 9 minutes

8.1.7 edit

emixter August 24, 2025 at 09:22 AM

#15344

8.1.7 new solution

emixter August 24, 2025 at 08:12 AM

#15343

2 hours 32 minutes between problems

solved· 2.6.9

2.6.9 edit

Anonymous August 24, 2025 at 05:40 AM

#15342

8 minutes between problems

solved· 2.6.6

2.6.6 edit

Anonymous August 24, 2025 at 05:31 AM

#15341

16 hours 10 minutes between problems

solved· 8.1.4 in 17 minutes 3 seconds

8.1.4 edit

emixter August 23, 2025 at 01:20 PM

#15340

8.1.4 new solution

emixter August 23, 2025 at 01:03 PM

#15339

24 minutes between problems

solved· 8.1.5 in 29 minutes 12 seconds

8.1.5 edit

emixter August 23, 2025 at 12:39 PM

#15338

8.1.5 new solution

emixter August 23, 2025 at 12:09 PM

#15337

1 hour 6 minutes between problems

solved· 2.5.7 in 6 minutes 45 seconds

2.5.7 edit

Sergey_Kuleshov August 23, 2025 at 11:03 AM

#15336

2.5.7 new solution

Sergey_Kuleshov August 23, 2025 at 10:56 AM

#15335

15 hours 24 minutes between problems

solved· 7.4.21 in 59 minutes 53 seconds

7.4.21 edit

emixter August 22, 2025 at 07:32 PM

#15334

7.4.21 new solution

emixter August 22, 2025 at 06:32 PM

#15333

11 hours 35 minutes between problems

solved· 7.3.4 in 38 minutes 9 seconds

7.3.4 edit

emixter August 22, 2025 at 06:57 AM

#15332

7.3.4 new solution

emixter August 22, 2025 at 06:19 AM

#15331

1 hour 35 minutes between problems

solved· 2.4.9

2.4.9 edit

Anonymous August 22, 2025 at 04:43 AM

#15330

14 minutes between problems

solved· 2.4.7

2.4.7 edit

Anonymous August 22, 2025 at 04:29 AM

#15329

10 hours 17 minutes between problems

solved· 7.3.5 in 21 minutes 56 seconds

7.3.5 edit

emixter August 21, 2025 at 06:11 PM

#15328

7.3.5 new solution

emixter August 21, 2025 at 05:49 PM

#15327

12 hours 59 minutes between problems

solved· 2.3.46 in 4 minutes 12 seconds

2.3.46 edit

Anonymous August 21, 2025 at 04:49 AM

#15326

2.3.46 edit

Anonymous August 21, 2025 at 04:45 AM

#15325

4 minutes between problems

solved· 2.3.45

2.3.45 edit

Anonymous August 21, 2025 at 04:41 AM

#15324

12 hours 15 minutes between problems

solved· 6.6.11 in 38 minutes 34 seconds

6.6.11 edit

emixter August 20, 2025 at 04:25 PM

#15323

6.6.11 edit

emixter August 20, 2025 at 04:24 PM

#15322

6.6.11 new solution

emixter August 20, 2025 at 03:46 PM

#15321

20 hours 15 minutes between problems

solved· 1.2.7

1.2.7 comment

Rill-73 August 19, 2025 at 07:31 PM

thread

1 hour 45 minutes between problems

solved· 2.1.50

2.1.50 edit

Anonymous August 19, 2025 at 05:45 PM

#15320

1 hour 34 minutes between problems

solved· 1.2.18

1.2.18 comment

emixter August 19, 2025 at 04:12 PM

thread

1.2.18 edit

emixter August 19, 2025 at 04:10 PM

#15319

11 minutes between problems

solved· 2.1.20

2.1.20 comment

abububabudjak August 19, 2025 at 03:59 PM

thread

2.1.20 comment

abububabudjak August 19, 2025 at 03:51 PM

thread

31 minutes between problems

solved· 2.1.50 in 32 minutes 38 seconds

2.1.50 edit

giorgiotinashvili August 19, 2025 at 03:28 PM

#15318

2.1.50 edit

giorgiotinashvili August 19, 2025 at 03:26 PM

#15317

2.1.50 edit

giorgiotinashvili August 19, 2025 at 03:22 PM

#15316

2.1.50 edit

giorgiotinashvili August 19, 2025 at 03:16 PM

#15315

2.1.50 edit

giorgiotinashvili August 19, 2025 at 03:02 PM

#15314

2.1.50 edit

giorgiotinashvili August 19, 2025 at 03:02 PM

#15313

2.1.50 edit

giorgiotinashvili August 19, 2025 at 02:56 PM

#15312

2.1.50 edit

giorgiotinashvili August 19, 2025 at 02:55 PM

#15311

2 hours 26 minutes between problems

solved· 1.2.18 in 38 minutes 8 seconds

1.2.18 comment

igor August 19, 2025 at 01:17 PM

thread

1.2.18 edit

emixter August 19, 2025 at 12:29 PM

#15310

1.2.18 new solution

emixter August 19, 2025 at 11:51 AM

#15309

6 hours 53 minutes between problems

solved· 2.3.27

2.3.27 edit

Anonymous August 19, 2025 at 04:58 AM

#15308

6 hours 41 minutes between problems

solved· 2.4.11

2.4.11 edit

giorgiotinashvili August 18, 2025 at 10:16 PM

#15307

23 minutes between problems

solved· 2.1.50

2.1.50 edit

giorgiotinashvili August 18, 2025 at 09:52 PM

#15306

9 hours 20 minutes between problems

solved· 9.1.6 in 11 seconds

9.1.6 edit

Anonymous August 18, 2025 at 12:32 PM

#15305

9.1.6 edit

Anonymous August 18, 2025 at 12:32 PM

#15304

1 day 6 hours between problems

solved· 6.3.28 in 4 minutes 36 seconds

6.3.28 edit

Spiral August 17, 2025 at 05:51 AM

#15303

6.3.28 edit

Spiral August 17, 2025 at 05:50 AM

#15302

6.3.28 edit

Spiral August 17, 2025 at 05:46 AM

#15301

15 hours 19 minutes between problems

solved· 3.3.11

3.3.11 edit

Anonymous August 16, 2025 at 02:26 PM

#15300

34 minutes between problems

solved· 4.1.6

4.1.6 comment

bandemort August 16, 2025 at 01:52 PM

thread

6 hours 48 minutes between problems

solved· 3.6.8 in 5 minutes 19 seconds

3.6.8 edit

Picksell Prod August 16, 2025 at 07:04 AM

#15299

3.6.8 edit