| 1551 | Codeforces Round 734 (Div. 3) | Jul 23, 2021, 02:35 PM | 2h | Finished | |
| 1553 | Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2) | Jul 22, 2021, 02:35 PM | 2h 30m | Finished | |
| 1544 | VK Cup 2021 - Elimination (Engine) | Jul 17, 2021, 02:35 PM | 3h | Finished | |
| 1530 | Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine)) | Jul 17, 2021, 02:35 PM | 3h | Finished | |
| 1550 | Educational Codeforces Round 111 (Rated for Div. 2) | Jul 14, 2021, 02:35 PM | 2h | Finished | |
| 1546 | Codeforces Round 732 (Div. 2) | Jul 11, 2021, 02:05 PM | 2h 30m | Finished | |
| 1545 | Codeforces Round 732 (Div. 1) | Jul 11, 2021, 02:05 PM | 2h 30m | Finished | |
| 1547 | Codeforces Round 731 (Div. 3) | Jul 10, 2021, 02:35 PM | 2h 15m | Finished | |
| 1543 | Codeforces Round 730 (Div. 2) | Jul 07, 2021, 02:35 PM | 2h 15m | Finished | |
| 1542 | Codeforces Round 729 (Div. 2) | Jul 03, 2021, 01:05 PM | 2h | Finished | |
| 1533 | Kotlin Heroes: Episode 7 | Jun 29, 2021, 02:35 PM | 2h 30m | Finished | |
| 1541 | Codeforces Round 728 (Div. 2) | Jun 25, 2021, 03:35 PM | 2h 15m | Finished | |
| 1540 | Codeforces Round 728 (Div. 1) | Jun 25, 2021, 03:35 PM | 2h 15m | Finished | |
| 1532 | Kotlin Heroes: Practice 7 | Jun 22, 2021, 01:35 PM | 168h | Finished | |
| 1539 | Codeforces Round 727 (Div. 2) | Jun 20, 2021, 10:05 AM | 2h | Finished | |
| 1537 | Codeforces Round 726 (Div. 2) | Jun 18, 2021, 02:35 PM | 2h | Finished | |
| 1534 | Codeforces LATOKEN Round 1 (Div. 1 + Div. 2) | Jun 13, 2021, 03:35 PM | 3h | Finished | |
| 1538 | Codeforces Round 725 (Div. 3) | Jun 10, 2021, 02:35 PM | 2h 15m | Finished | |
| 1536 | Codeforces Round 724 (Div. 2) | Jun 06, 2021, 02:35 PM | 2h | Finished | |
| 1535 | Educational Codeforces Round 110 (Rated for Div. 2) | Jun 04, 2021, 02:35 PM | 2h | Finished | |
| 1523 | Deltix Round, Spring 2021 (open for everyone, rated, Div. 1 + Div. 2) | May 30, 2021, 02:35 PM | 2h 15m | Finished | |
| 1526 | Codeforces Round 723 (Div. 2) | May 28, 2021, 02:05 PM | 2h 30m | Finished | |
| 1524 | ICPC Challenge 2021: Marathon (powered by Huawei) | May 26, 2021, 04:00 AM | 96h | Finished | |
| 1528 | Codeforces Round 722 (Div. 1) | May 24, 2021, 02:35 PM | 2h 15m | Finished | |
| 1529 | Codeforces Round 722 (Div. 2) | May 24, 2021, 02:35 PM | 2h 15m | Finished | |
| 1531 | VK Cup 2021 - Квалификация (Engine) | May 24, 2021, 09:00 AM | 156h | Finished | |
| 1527 | Codeforces Round 721 (Div. 2) | May 20, 2021, 02:35 PM | 2h | Finished | |
| 1522 | Codeforces Raif ML Round 1 | May 17, 2021, 04:00 PM | 336h | Finished | |
| 1525 | Educational Codeforces Round 109 (Rated for Div. 2) | May 16, 2021, 08:00 AM | 2h | Finished | |
| 1521 | Codeforces Round 720 (Div. 2) | May 07, 2021, 02:35 PM | 2h 15m | Finished | |
| 1520 | Codeforces Round 719 (Div. 3) | May 05, 2021, 02:35 PM | 2h | Finished | |
| 1515 | Codeforces Global Round 14 | May 02, 2021, 02:35 PM | 3h | Finished | |
| 1519 | Educational Codeforces Round 108 (Rated for Div. 2) | Apr 29, 2021, 02:35 PM | 2h | Finished | |
| 1517 | Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2) | Apr 23, 2021, 02:35 PM | 2h 45m | Finished | |
| 1516 | Codeforces Round 717 (Div. 2) | Apr 21, 2021, 01:35 PM | 2h | Finished | |
| 1514 | Codeforces Round 716 (Div. 2) | Apr 19, 2021, 01:35 PM | 2h 15m | Finished | |
| 1509 | Codeforces Round 715 (Div. 2) | Apr 16, 2021, 02:35 PM | 2h 15m | Finished | |
| 1508 | Codeforces Round 715 (Div. 1) | Apr 16, 2021, 02:35 PM | 2h 15m | Finished | |
| 1511 | Educational Codeforces Round 107 (Rated for Div. 2) | Apr 12, 2021, 02:35 PM | 2h | Finished | |
| 1513 | Divide by Zero 2021 and Codeforces Round 714 (Div. 2) | Apr 11, 2021, 02:35 PM | 2h | Finished | |
| 1512 | Codeforces Round 713 (Div. 3) | Apr 10, 2021, 02:35 PM | 2h | Finished | |
| 1510 | 2020-2021 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) | Apr 04, 2021, 08:05 AM | 5h | Finished | |
| 1504 | Codeforces Round 712 (Div. 2) | Apr 03, 2021, 02:35 PM | 2h 15m | Finished | |
| 1503 | Codeforces Round 712 (Div. 1) | Apr 03, 2021, 02:35 PM | 2h 15m | Finished | |
| 1505 | April Fools Day Contest 2021 | Apr 01, 2021, 02:35 PM | 2h | Finished | |
| 1498 | CodeCraft-21 and Codeforces Round 711 (Div. 2) | Mar 29, 2021, 02:35 PM | 2h | Finished | |
| 1506 | Codeforces Round 710 (Div. 3) | Mar 25, 2021, 02:35 PM | 2h | Finished | |
| 1483 | Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round) | Mar 21, 2021, 01:20 PM | 2h 15m | Finished | |
| 1484 | Codeforces Round 709 (Div. 2, based on Technocup 2021 Final Round) | Mar 21, 2021, 01:20 PM | 2h 15m | Finished | |
| 1482 | Технокубок 2021 - Финал | Mar 21, 2021, 10:20 AM | 3h | Finished | |