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Educational Codeforces Round 190 (Rated for Div. 2)
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Repovive Standard Round 3 Solution Discussion (with Anirudh)

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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
141	Codeforces Round 1098 (Div. 2)	May/16/2026 17:35	4393	2	-117	1770
140	Codeforces Round 1091 (Div. 2) and CodeCraft 26	Apr/07/2026 17:35	1419	4	-42	1887	Became Expert kissgergely → kissgergely
139	Codeforces Round 1085 (Div. 1 + Div. 2)	Mar/08/2026 17:35	885	3	-5	1929
138	Codeforces Round 1081 (Div. 2)	Feb/21/2026 17:35	507	4	+10	1934
137	Codeforces Round 1078 (Div. 2)	Feb/08/2026 12:05	291	5	+51	1924	Became Candidate Master kissgergely → kissgergely
136	Codeforces Round 1073 (Div. 2)	Jan/17/2026 17:35	271	5	+58	1873
135	Hello 2026	Jan/07/2026 17:35	10226	2	-200	1815	Became Expert kissgergely → kissgergely
134	Educational Codeforces Round 186 (Rated for Div. 2)	Dec/29/2025 17:35	1144	5	-73	2015
133	Good Bye 2025	Dec/27/2025 17:35	1617	5	-57	2088	Became Candidate Master kissgergely → kissgergely
132	Codeforces Global Round 31 (Div. 1 + Div. 2)	Dec/19/2025 17:35	900	4	-29	2145
131	Codeforces Round 1069 (Div. 1)	Dec/06/2025 11:15	431	2	-39	2174
130	Codeforces Round 1066 (Div. 1 + Div. 2)	Nov/23/2025 12:35	355	6	+37	2213
129	Codeforces Round 1063 (Div. 2)	Nov/10/2025 18:05	59	5	+80	2176	Became Master kissgergely → kissgergely
128	Codeforces Global Round 30 (Div. 1 + Div. 2)	Nov/06/2025 17:35	402	5	+70	2096
127	Pinely Round 5 (Div. 1 + Div. 2)	Oct/30/2025 19:35	333	4	+65	2026
126	Codeforces Round 1060 (Div. 2)	Oct/19/2025 17:35	363	5	+30	1961
125	Codeforces Round 1058 (Div. 1)	Oct/12/2025 17:35	772	1	-54	1931
124	Educational Codeforces Round 183 (Rated for Div. 2)	Oct/06/2025 17:35	651	4	-15	1985
123	Codeforces Round 1052 (Div. 2)	Sep/21/2025 17:35	725	5	-32	2000
122	Codeforces Round 1039 (Div. 2)	Jul/27/2025 17:35	735	5	-36	2032
121	Educational Codeforces Round 180 (Rated for Div. 2)	Jun/23/2025 17:35	117	5	+70	2068
120	Codeforces Round 1033 (Div. 2) and CodeNite 2025	Jun/21/2025 17:35	1031	4	-53	1998
119	Codeforces Round 1031 (Div. 2)	Jun/15/2025 12:05	97	4	+69	2051
118	Codeforces Round 1026 (Div. 2)	May/24/2025 17:35	594	4	-6	1982
117	Codeforces Round 1025 (Div. 2)	May/17/2025 17:35	1025	4	-58	1988
116	Codeforces Round 1024 (Div. 1)	May/11/2025 17:35	378	3	+61	2046
115	Codeforces Round 1023 (Div. 2)	May/05/2025 17:35	360	4	+14	1985
114	Codeforces Round 1022 (Div. 2)	May/01/2025 17:35	800	3	-36	1971
113	Educational Codeforces Round 178 (Rated for Div. 2)	Apr/28/2025 17:35	333	5	+14	2007
112	Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)	Apr/19/2025 17:35	1276	4	-14	1993
111	Codeforces Round 1014 (Div. 2)	Mar/29/2025 17:35	208	5	+76	2007
110	Educational Codeforces Round 174 (Rated for Div. 2)	Feb/18/2025 17:35	479	4	+25	1931
109	Codeforces Round 1005 (Div. 2)	Feb/16/2025 17:35	1570	3	-56	1906
108	Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)	Jan/26/2025 17:35	957	4	+48	1962
107	IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)	Jan/20/2025 17:35	1440	4	-19	1914
106	Codeforces Round 996 (Div. 2)	Jan/12/2025 17:35	711	4	+12	1933
105	Hello 2025	Jan/04/2025 17:35	2381	3	-56	1921
104	Codeforces Round 994 (Div. 2)	Dec/20/2024 17:35	851	4	-30	1977
103	Codeforces Global Round 28	Dec/19/2024 17:35	1262	4	-25	2007
102	Educational Codeforces Round 172 (Rated for Div. 2)	Dec/02/2024 17:35	205	4	+43	2032
101	Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)	Nov/30/2024 17:35	2714	3	-128	1989	Became Candidate Master kissgergely → kissgergely
100	Refact.ai Match 1 (Codeforces Round 985)	Nov/09/2024 17:35	243	6	+130	2117	Became Master kissgergely → kissgergely
99	Educational Codeforces Round 171 (Rated for Div. 2)	Oct/28/2024 17:35	914	4	-34	1987
98	Codeforces Global Round 27	Oct/27/2024 17:35	558	5	+71	2021
97	Educational Codeforces Round 170 (Rated for Div. 2)	Oct/14/2024 17:35	715	4	-6	1950
96	Codeforces Round 972 (Div. 2)	Sep/14/2024 17:35	3342	3	-126	1956
95	Codeforces Round 967 (Div. 2)	Aug/20/2024 17:35	370	4	+1	2082
94	EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)	Aug/11/2024 17:35	571	5	+59	2081
93	Codeforces Round 965 (Div. 2)	Aug/10/2024 17:35	240	4	+58	2022
92	Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)	Jul/18/2024 17:35	703	5	+65	1964	Became Candidate Master kissgergely → kissgergely
91	Codeforces Round 958 (Div. 2)	Jul/15/2024 17:35	1031	3	-17	1899	Became Expert kissgergely → kissgergely
90	Codeforces Round 956 (Div. 2) and ByteRace 2024	Jul/07/2024 17:35	625	4	+18	1916	Became Candidate Master kissgergely → kissgergely
89	Educational Codeforces Round 167 (Rated for Div. 2)	Jun/27/2024 17:35	250	4	+92	1898
88	Codeforces Round 955 (Div. 2, with prizes from NEAR!)	Jun/25/2024 17:35	509	4	+68	1806
87	Codeforces Round 951 (Div. 2)	Jun/06/2024 17:35	1400	4	+10	1738
86	Educational Codeforces Round 166 (Rated for Div. 2)	May/30/2024 17:35	4524	2	-96	1728
85	Codeforces Round 947 (Div. 1 + Div. 2)	May/25/2024 17:35	585	5	+116	1824
84	Codeforces Round 945 (Div. 2)	May/17/2024 17:35	3931	2	-94	1708
83	Codeforces Round 940 (Div. 2) and CodeCraft-23	Apr/21/2024 17:35	8556	1	-194	1802	Became Expert kissgergely → kissgergely
82	Educational Codeforces Round 164 (Rated for Div. 2)	Apr/12/2024 17:35	186	5	+84	1996
81	Codeforces Round 934 (Div. 1)	Mar/16/2024 17:35	1011	1	-67	1912
80	Codeforces Round 904 (Div. 2)	Oct/22/2023 10:05	799	3	-55	1979
79	Codeforces Round 901 (Div. 1)	Sep/30/2023 17:35	868	1	-72	2034	Became Candidate Master kissgergely → kissgergely
78	Codeforces Round 865 (Div. 1)	Apr/09/2023 17:45	475	2	-26	2106
77	Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)	Dec/17/2022 17:35	1254	4	-90	2132
76	Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine))	Jul/17/2021 17:35	1170	4	-94	2222	Became Master
75	Codeforces Round 712 (Div. 1)	Apr/03/2021 17:35	327	3	-7	2316
74	Codeforces Round 706 (Div. 1)	Mar/10/2021 15:05	133	3	+110	2323	Became International Master
73	Codeforces Round 696 (Div. 2)	Jan/19/2021 17:35	29	4	+124	2213	Became Master kissgergely → kissgergely
72	Codeforces Round 694 (Div. 1)	Jan/05/2021 17:35	821	2	-77	2089	Became Candidate Master kissgergely → kissgergely
71	Codeforces Round 692 (Div. 1, based on Technocup 2021 Elimination Round 3)	Dec/20/2020 18:05	498	2	-46	2166
70	Codeforces Round 683 (Div. 1, by Meet IT)	Nov/15/2020 17:35	475	3	-37	2212
69	Codeforces Raif Round 1 (Div. 1 + Div. 2)	Oct/17/2020 16:05	400	5	+27	2249
68	Codeforces Global Round 11	Oct/10/2020 17:50	426	4	+38	2222
67	Codeforces Global Round 9	Jul/04/2020 17:45	409	5	+76	2184
66	Codeforces Round 635 (Div. 1)	Apr/15/2020 17:35	620	2	+7	2108
65	Codeforces Round 633 (Div. 1)	Apr/12/2020 17:05	752	2	-26	2101
64	Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov!	Apr/03/2020 17:35	1090	1	-90	2127
63	Codeforces Round 630 (Div. 2)	Mar/31/2020 16:35	29	6	+145	2217	Became Master kissgergely → kissgergely
62	Educational Codeforces Round 84 (Rated for Div. 2)	Mar/23/2020 17:35	61	5	+148	2072
61	Codeforces Round 588 (Div. 1)	Sep/23/2019 17:05	578	1	-55	1924
60	Educational Codeforces Round 72 (Rated for Div. 2)	Sep/05/2019 17:35	1552	2	-82	1979
59	Educational Codeforces Round 71 (Rated for Div. 2)	Aug/22/2019 17:35	408	5	-21	2061
58	Codeforces Round 578 (Div. 2)	Aug/11/2019 15:35	174	5	+33	2082
57	Educational Codeforces Round 70 (Rated for Div. 2)	Aug/07/2019 17:35	183	3	+23	2049
56	Codeforces Round 577 (Div. 2)	Aug/04/2019 19:35	289	3	-5	2026
55	Educational Codeforces Round 69 (Rated for Div. 2)	Jul/22/2019 17:35	123	4	+71	2031
54	Codeforces Global Round 4	Jul/20/2019 18:35	618	5	+22	1960
53	Codeforces Round 534 (Div. 1)	Jan/22/2019 17:35	310	2	+23	1938
52	Codeforces Round 530 (Div. 1)	Jan/05/2019 19:35	411	1	-10	1915
51	Codeforces Round 513 by Barcelona Bootcamp (rated, Div. 1 + Div. 2)	Oct/04/2018 10:05	410	5	+40	1925	Became Candidate Master kissgergely → kissgergely
50	Codeforces Round 512 (Div. 2, based on Technocup 2019 Elimination Round 1)	Sep/23/2018 16:05	131	4	+60	1885
49	Codeforces Round 510 (Div. 2)	Sep/17/2018 11:05	807	3	-56	1825
48	Codeforces Round 509 (Div. 2)	Sep/16/2018 13:35	485	5	+2	1881
47	Educational Codeforces Round 50 (Rated for Div. 2)	Sep/07/2018 17:35	900	3	-50	1879	Became Expert kissgergely → kissgergely
46	Codeforces Round 507 (Div. 1, based on Olympiad of Metropolises)	Sep/05/2018 19:35	281	1	-36	1929
45	AIM Tech Round 5 (rated, Div. 1 + Div. 2)	Aug/27/2018 19:35	592	3	-8	1965
44	Codeforces Round 503 (by SIS, Div. 1)	Aug/11/2018 16:35	322	1	+4	1973
43	Codeforces Round 497 (Div. 1)	Jul/13/2018 17:35	452	1	-57	1969
42	Codeforces Round 485 (Div. 1)	May/29/2018 18:35	307	2	-10	2026
41	Codeforces Round 483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!]	May/15/2018 17:45	205	2	+49	2036
40	Codeforces Round 470 (rated, Div. 1, based on VK Cup 2018 Round 1)	Mar/10/2018 18:35	359	3	-54	1987
39	ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined)	Feb/15/2018 17:35	490	3	-14	2041
38	Good Bye 2017	Dec/29/2017 18:40	280	4	+76	2055
37	Manthan, Codefest 17	Sep/24/2017 17:35	760	2	-68	1979
36	AIM Tech Round 4 (Div. 1)	Aug/24/2017 19:35	215	2	+43	2047
35	Codeforces Round 429 (Div. 1)	Aug/18/2017 18:05	297	2	-4	2004
34	Codeforces Round 424 (Div. 2, rated, based on VK Cup Finals)	Jul/13/2017 18:05	23	5	+121	2008	Became Candidate Master kissgergely → kissgergely
33	Codeforces Round 423 (Div. 2, rated, based on VK Cup Finals)	Jul/11/2017 19:45	129	4	+58	1887
32	Codeforces Round 419 (Div. 2)	Jun/17/2017 17:35	154	3	+67	1829
31	Codeforces Round 417 (Div. 2)	Jun/01/2017 17:15	609	3	-12	1762
30	Codeforces Round 406 (Div. 2)	Mar/23/2017 18:05	313	2	+44	1774
29	Codeforces Round 404 (Div. 2)	Mar/15/2017 18:05	676	3	-6	1730
28	Codeforces Round 403 (Div. 2, based on Technocup 2017 Finals)	Mar/05/2017 16:05	471	3	+8	1736
27	Codeforces Round 398 (Div. 2)	Feb/18/2017 12:05	602	1	-15	1728
26	Codeforces Round 393 (Div. 2) (8VC Venture Cup 2017 - Final Round Div. 2 Edition)	Jan/22/2017 21:15	258	4	+42	1743
25	Good Bye 2016	Dec/30/2016 17:15	946	4	+91	1701
24	Codeforces Round 389 (Div. 2, Rated, Based on Technocup 2017 - Elimination Round 3)	Dec/25/2016 12:05	210	3	+104	1610	Became Expert kissgergely → kissgergely
23	Codeforces Round 381 (Div. 2)	Nov/23/2016 19:35	1517	2	-16	1506
22	Codeforces Round 379 (Div. 2)	Nov/15/2016 19:35	1794	2	-45	1522
21	Codeforces Round 372 (Div. 2)	Sep/17/2016 16:45	456	3	+116	1567
20	Codeforces Round 366 (Div. 2)	Aug/07/2016 17:05	1318	2	+38	1451
19	Codeforces Round 344 (Div. 2)	Mar/03/2016 19:35	1061	2	+27	1413	Became Specialist kissgergely → kissgergely
18	Codeforces Round 340 (Div. 2)	Jan/23/2016 18:35	2203	1	-46	1386	Became Pupil kissgergely → kissgergely
17	Good Bye 2015	Dec/30/2015 18:05	2396	3	+17	1432
16	Codeforces Round 336 (Div. 2)	Dec/23/2015 19:35	1479	1	0	1415
15	Codeforces Round 333 (Div. 2)	Nov/24/2015 19:35	2392	0	-117	1415
14	Codeforces Round 326 (Div. 2)	Oct/15/2015 19:30	2300	1	-59	1532
13	Codeforces Round 323 (Div. 2)	Oct/03/2015 19:45	754	3	+26	1591
12	Codeforces Round 320 (Div. 2) [Bayan Thanks-Round]	Sep/16/2015 18:15	825	2	+5	1565
11	Codeforces Round 319 (Div. 2)	Sep/10/2015 19:30	866	2	-62	1560	Became Specialist kissgergely → kissgergely
10	Codeforces Round 318 [RussianCodeCup Thanks-Round] (Div. 2)	Aug/29/2015 19:30	540	3	-62	1622
9	Codeforces Round 312 (Div. 2)	Jul/14/2015 18:10	117	3	+215	1684	Became Expert kissgergely → kissgergely
8	Codeforces Round 311 (Div. 2)	Jun/30/2015 18:00	1363	1	-90	1469
7	Codeforces Round 310 (Div. 2)	Jun/27/2015 17:10	1278	2	-85	1559	Became Specialist kissgergely → kissgergely
6	Codeforces Round 309 (Div. 1)	Jun/24/2015 19:30	745	0	-70	1644
5	Looksery Cup 2015	Jun/06/2015 16:00	1172	2	+87	1714
4	Codeforces Round 306 (Div. 2)	Jun/04/2015 19:30	440	3	+7	1627
3	Codeforces Round 305 (Div. 2)	May/26/2015 19:35	340	2	+105	1620	Became Expert kissgergely → kissgergely
2	Codeforces Round 304 (Div. 2)	May/22/2015 19:30	754	3	+70	1515
1	Codeforces Round 299 (Div. 2)	Apr/14/2015 19:35	1418	2	-55	1445	Became Specialist kissgergely → kissgergely

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