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Educational Codeforces Round 190 (Rated for Div. 2)
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Codeforces Edu Round 190 (Div 2) — Solution Discussion

By Shayan

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Contests

#	Contest	Start time	Rank	Solved	Rating change	New rating
90	Codeforces Round 1057 (Div. 2)	Oct/10/2025 17:35	3248	3	+25	1448
89	Codeforces Round 1035 (Div. 2)	Jul/05/2025 17:35	6309	2	-41	1423
88	Educational Codeforces Round 180 (Rated for Div. 2)	Jun/23/2025 17:35	3705	3	0	1464
87	Codeforces Round 1033 (Div. 2) and CodeNite 2025	Jun/21/2025 17:35	1902	3	+75	1464	Became Specialist ground_zero → ground_zero
86	Codeforces Round 1032 (Div. 3)	Jun/17/2025 17:35	4065	4	-5	1389
85	Codeforces Round 1030 (Div. 2)	Jun/12/2025 17:35	7939	2	-55	1394	Became Pupil ground_zero → ground_zero
84	Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)	Apr/05/2025 17:35	5186	3	-48	1449
83	think-cell Round 1	Feb/17/2024 17:35	3675	2	-20	1497
82	Codeforces Round 848 (Div. 2)	Feb/01/2023 17:35	4580	2	-67	1517
81	Codeforces Round 825 (Div. 2)	Oct/10/2022 17:35	1927	3	+1	1584
80	Codeforces Global Round 22	Sep/30/2022 17:35	2681	2	-15	1583
79	Educational Codeforces Round 136 (Rated for Div. 2)	Sep/29/2022 17:35	1371	3	+20	1598
78	Codeforces Round 823 (Div. 2)	Sep/25/2022 17:35	1996	3	-6	1578
77	Codeforces Round 822 (Div. 2)	Sep/23/2022 15:05	1927	3	-12	1584
76	Educational Codeforces Round 135 (Rated for Div. 2)	Sep/08/2022 17:35	1603	3	+15	1596
75	Codeforces Round 807 (Div. 2)	Jul/15/2022 16:35	3619	3	-60	1581	Became Specialist ground_zero → ground_zero
74	Codeforces Round 802 (Div. 2)	Jun/19/2022 12:05	1269	3	+10	1641
73	Codeforces Round 801 (Div. 2) and EPIC Institute of Technology Round	Jun/18/2022 17:35	497	3	+122	1631	Became Expert ground_zero → ground_zero
72	Codeforces Round 800 (Div. 2)	Jun/16/2022 17:35	1032	4	+85	1509
71	Codeforces Round 798 (Div. 2)	Jun/10/2022 19:35	1502	3	+51	1424	Became Specialist ground_zero → ground_zero
70	Codeforces Round 797 (Div. 3)	Jun/07/2022 17:35	7874	4	-83	1373	Became Pupil ground_zero → ground_zero
69	Codeforces Round 796 (Div. 2)	Jun/03/2022 17:35	3239	2	-15	1456
68	Codeforces Round 793 (Div. 2)	May/22/2022 17:35	4471	2	-58	1471
67	Codeforces Global Round 20	Apr/23/2022 17:05	2742	3	-14	1529
66	Educational Codeforces Round 126 (Rated for Div. 2)	Apr/09/2022 17:35	1881	2	+7	1543
65	CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!)	Mar/24/2022 17:35	1001	4	+173	1536	Became Specialist ground_zero → ground_zero
64	Codeforces Round 778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round)	Mar/20/2022 14:35	3942	2	-25	1363
63	Codeforces Round 777 (Div. 2)	Mar/11/2022 17:35	6106	2	-78	1388	Became Pupil ground_zero → ground_zero
62	Codeforces Round 775 (Div. 2, based on Moscow Open Olympiad in Informatics)	Mar/06/2022 12:55	952	3	+86	1466	Became Specialist ground_zero → ground_zero
61	Codeforces Round 773 (Div. 2)	Feb/23/2022 13:10	2592	3	+6	1380
60	Educational Codeforces Round 123 (Rated for Div. 2)	Feb/22/2022 17:35	5546	2	-49	1374	Became Pupil ground_zero → ground_zero
59	Codeforces Round 771 (Div. 2)	Feb/14/2022 17:35	4614	2	-34	1423
58	Codeforces Round 769 (Div. 2)	Jan/30/2022 17:35	5564	2	-50	1457
57	Codeforces Round 767 (Div. 2)	Jan/22/2022 17:35	1865	4	+41	1507
56	Codeforces Round 766 (Div. 2)	Jan/15/2022 17:35	2258	3	+33	1466
55	Codeforces Round 765 (Div. 2)	Jan/12/2022 15:05	2319	2	+27	1433
54	Codeforces Round 764 (Div. 3)	Jan/10/2022 17:35	12492	1	-134	1406
53	Codeforces Round 755 (Div. 2, based on Technocup 2022 Elimination Round 2)	Nov/14/2021 09:05	3183	3	-120	1540	Became Specialist ground_zero → ground_zero
52	Codeforces Round 754 (Div. 2)	Nov/12/2021 17:35	1491	3	-4	1660
51	Codeforces Round 739 (Div. 3)	Aug/18/2021 17:35	143	6	+127	1664	Became Expert ground_zero → ground_zero
50	Codeforces Round 737 (Div. 2)	Aug/09/2021 17:35	4658	2	-61	1537
49	Codeforces Round 736 (Div. 2)	Aug/01/2021 17:35	1608	3	+16	1598
48	Educational Codeforces Round 112 (Rated for Div. 2)	Jul/30/2021 17:35	514	4	+167	1582
47	Codeforces Round 735 (Div. 2)	Jul/29/2021 17:35	3691	1	-8	1415
46	Codeforces Global Round 15	Jul/25/2021 17:35	5167	1	-53	1423
45	Codeforces Round 734 (Div. 3)	Jul/23/2021 17:35	1990	3	+2	1476
44	Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine))	Jul/17/2021 17:35	4603	3	-43	1474
43	Educational Codeforces Round 111 (Rated for Div. 2)	Jul/14/2021 17:35	2555	2	+22	1517
42	Codeforces Round 731 (Div. 3)	Jul/10/2021 17:35	2292	4	-14	1495
41	Codeforces Round 728 (Div. 2)	Jun/25/2021 18:35	2609	3	-8	1509
40	Codeforces Round 727 (Div. 2)	Jun/20/2021 13:05	4025	2	-68	1517
39	Educational Codeforces Round 110 (Rated for Div. 2)	Jun/04/2021 17:35	2252	3	+5	1585
38	Deltix Round, Spring 2021 (open for everyone, rated, Div. 1 + Div. 2)	May/30/2021 17:35	2235	3	+31	1580
37	Codeforces Round 723 (Div. 2)	May/28/2021 17:05	4497	2	-61	1549	Became Specialist ground_zero → ground_zero
36	Codeforces Round 698 (Div. 2)	Jan/28/2021 17:35	3554	2	-55	1610
35	Educational Codeforces Round 100 (Rated for Div. 2)	Dec/17/2020 17:35	930	3	+71	1665	Became Expert ground_zero → ground_zero
34	Codeforces Round 689 (Div. 2, based on Zed Code Competition)	Dec/11/2020 17:35	2417	3	-33	1594	Became Specialist ground_zero → ground_zero
33	Codeforces Round 686 (Div. 3)	Nov/24/2020 17:35	402	4	+61	1627	Became Expert ground_zero → ground_zero
32	Codeforces Round 684 (Div. 2)	Nov/17/2020 17:35	1217	3	+33	1566
31	Codeforces Round 683 (Div. 2, by Meet IT)	Nov/15/2020 17:35	1454	3	-1	1533
30	Codeforces Round 681 (Div. 2, based on VK Cup 2019-2020 - Final)	Nov/02/2020 17:35	2921	3	-60	1534
29	Codeforces Round 680 (Div. 2, based on Moscow Team Olympiad)	Nov/01/2020 14:05	720	3	+61	1594
28	Educational Codeforces Round 97 (Rated for Div. 2)	Oct/27/2020 17:35	2488	2	-3	1533
27	Codeforces Round 679 (Div. 2, based on Technocup 2021 Elimination Round 1)	Oct/25/2020 14:05	534	3	+115	1536
26	Codeforces Round 677 (Div. 3)	Oct/20/2020 17:35	2360	5	-3	1421
25	Codeforces Round 676 (Div. 2)	Oct/18/2020 12:05	3110	3	-8	1424
24	Codeforces Global Round 11	Oct/10/2020 17:50	5444	1	-77	1432
23	Codeforces Round 675 (Div. 2)	Oct/04/2020 19:05	3947	1	-73	1509
22	Codeforces Round 674 (Div. 3)	Sep/28/2020 11:05	654	4	+21	1582
21	Codeforces Round 673 (Div. 2)	Sep/27/2020 18:05	849	3	+63	1561
20	Codeforces Round 672 (Div. 2)	Sep/24/2020 17:35	3895	3	-23	1498
19	Codeforces Round 671 (Div. 2)	Sep/19/2020 17:35	3677	3	-36	1521
18	Codeforces Round 669 (Div. 2)	Sep/08/2020 17:35	2775	2	+9	1557
17	Codeforces Round 668 (Div. 2)	Sep/06/2020 17:35	1655	3	+41	1548
16	Codeforces Round 667 (Div. 3)	Sep/04/2020 17:35	3079	3	-34	1507
15	Codeforces Round 666 (Div. 2)	Aug/30/2020 17:35	3537	2	-27	1541
14	Educational Codeforces Round 94 (Rated for Div. 2)	Aug/25/2020 17:35	2004	3	+46	1568
13	Codeforces Round 665 (Div. 2)	Aug/21/2020 17:35	4724	3	-47	1522
12	Codeforces Global Round 10	Aug/16/2020 17:35	7443	2	-137	1569	Became Specialist ground_zero → ground_zero
11	Codeforces Round 658 (Div. 2)	Jul/21/2020 17:35	988	4	+50	1706
10	Codeforces Round 657 (Div. 2)	Jul/19/2020 12:00	2805	1	-12	1656
9	Educational Codeforces Round 89 (Rated for Div. 2)	Jun/11/2020 17:35	478	4	+166	1668	Became Expert ground_zero → ground_zero
8	Codeforces Round 648 (Div. 2)	Jun/07/2020 17:35	4477	3	-8	1502
7	Codeforces Round 647 (Div. 2) - Thanks, Algo Muse!	Jun/04/2020 17:35	2330	3	+47	1510
6	Codeforces Round 646 (Div. 2)	May/31/2020 17:35	7247	1	-48	1463
5	Educational Codeforces Round 88 (Rated for Div. 2)	May/28/2020 17:35	3726	2	+11	1511
4	Codeforces Round 645 (Div. 2)	May/26/2020 17:35	7752	2	-76	1500
3	Codeforces Round 644 (Div. 3)	May/24/2020 16:35	437	6	+109	1576
2	Codeforces Round 642 (Div. 3)	May/14/2020 17:35	5923	3	-52	1467
1	Codeforces Round 629 (Div. 3)	Mar/26/2020 17:35	2327	3	+19	1519	Became Specialist ground_zero → ground_zero

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