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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
131	Codeforces Round 1032 (Div. 3)	Jun/17/2025 17:35	2800	4	+8	1448
130	Codeforces Round 983 (Div. 2)	Nov/01/2024 17:35	5838	2	-54	1440
129	Educational Codeforces Round 168 (Rated for Div. 2)	Jul/30/2024 17:35	4515	3	-4	1494
128	Codeforces Round 962 (Div. 3)	Jul/26/2024 17:35	832	5	+92	1498
127	Codeforces Round 925 (Div. 3)	Feb/13/2024 17:35	3664	4	+4	1406
126	Codeforces Round 923 (Div. 3)	Feb/06/2024 17:45	3731	5	+8	1402	Became Specialist 20203246 → 20203246
125	Educational Codeforces Round 153 (Rated for Div. 2)	Aug/17/2023 17:35	6127	2	-37	1394	Became Pupil 20203246 → 20203246
124	Codeforces Round 890 (Div. 2) supported by Constructor Institute	Aug/05/2023 17:35	3204	2	+22	1431
123	Codeforces Round 869 (Div. 2)	Apr/29/2023 17:35	3714	2	-72	1409
122	Hello 2023	Jan/03/2023 17:35	3965	3	+4	1481
121	Codeforces Round 834 (Div. 3)	Nov/18/2022 17:35	541	5	+92	1477	Became Specialist 20203246 → 20203246
120	Codeforces Round 833 (Div. 2)	Nov/12/2022 17:35	2060	2	+50	1385
119	CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!)	Nov/06/2022 17:35	5052	2	-46	1335
118	Codeforces Round 832 (Div. 2)	Nov/04/2022 17:35	3680	3	-8	1381
117	Codeforces Round 831 (Div. 1 + Div. 2)	Oct/29/2022 12:10	6271	2	-126	1389	Became Pupil 20203246 → 20203246
116	Educational Codeforces Round 138 (Rated for Div. 2)	Oct/20/2022 17:35	3292	3	-40	1515
115	Codeforces Round 824 (Div. 2)	Oct/02/2022 17:35	2074	3	-8	1555
114	Codeforces Round 823 (Div. 2)	Sep/25/2022 17:35	1855	3	+7	1563
113	Codeforces Round 821 (Div. 2)	Sep/19/2022 17:35	5800	2	-117	1556	Became Specialist 20203246 → 20203246
112	Codeforces Round 816 (Div. 2)	Aug/20/2022 17:35	1967	3	-22	1673
111	Codeforces Round 815 (Div. 2)	Aug/18/2022 16:35	1160	3	+17	1695
110	Educational Codeforces Round 133 (Rated for Div. 2)	Aug/04/2022 17:35	1167	3	+41	1678
109	Codeforces Round 811 (Div. 3)	Aug/01/2022 17:35	261	6	+96	1637	Became Expert 20203246 → 20203246
108	CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!)	Jul/31/2022 17:05	3252	3	-12	1541
107	Codeforces Round 810 (Div. 2)	Jul/24/2022 17:35	1852	3	+15	1553
106	Educational Codeforces Round 132 (Rated for Div. 2)	Jul/21/2022 17:35	3674	2	-44	1538
105	Codeforces Round 807 (Div. 2)	Jul/15/2022 16:35	4396	3	-81	1582	Became Specialist 20203246 → 20203246
104	Educational Codeforces Round 131 (Rated for Div. 2)	Jul/08/2022 17:35	1164	3	+31	1663
103	Codeforces Round 804 (Div. 2)	Jul/04/2022 17:35	1181	3	+48	1632	Became Expert 20203246 → 20203246
102	Codeforces Global Round 21	Jun/25/2022 17:35	1116	4	+132	1584
101	Codeforces Round 800 (Div. 2)	Jun/16/2022 17:35	3317	3	-15	1452
100	Codeforces Round 798 (Div. 2)	Jun/10/2022 19:35	1691	3	+20	1467
99	Codeforces Round 797 (Div. 3)	Jun/07/2022 17:35	2253	5	+8	1447
98	Codeforces Round 796 (Div. 2)	Jun/03/2022 17:35	3855	2	-29	1439
97	CodeCraft-22 and Codeforces Round 795 (Div. 2)	May/31/2022 17:35	3756	3	-28	1468
96	Codeforces Round 793 (Div. 2)	May/22/2022 17:35	3821	2	-46	1496
95	Codeforces Round 792 (Div. 1 + Div. 2)	May/19/2022 17:35	3406	3	-22	1542
94	Educational Codeforces Round 128 (Rated for Div. 2)	May/13/2022 17:35	2690	2	-36	1564	Became Specialist 20203246 → 20203246
93	Codeforces Round 789 (Div. 2)	May/08/2022 17:35	663	3	+75	1600	Became Expert 20203246 → 20203246
92	Codeforces Round 788 (Div. 2)	May/06/2022 17:35	2404	3	-26	1525
91	Codeforces Round 787 (Div. 3)	May/05/2022 17:35	583	5	+55	1551
90	Codeforces Round 786 (Div. 3)	May/02/2022 17:35	521	5	+90	1496
89	Codeforces Round 776 (Div. 3)	Mar/08/2022 17:35	5280	3	-68	1406
88	Codeforces Round 775 (Div. 2, based on Moscow Open Olympiad in Informatics)	Mar/06/2022 12:55	2732	2	-34	1474
87	Codeforces Round 774 (Div. 2)	Mar/04/2022 18:35	1540	3	+37	1508
86	Codeforces Round 773 (Div. 2)	Feb/23/2022 13:10	3825	3	-68	1471
85	Educational Codeforces Round 123 (Rated for Div. 2)	Feb/22/2022 17:35	4738	2	-79	1539	Became Specialist 20203246 → 20203246
84	Codeforces Round 772 (Div. 2)	Feb/20/2022 17:35	1827	3	-9	1618
83	Codeforces Round 771 (Div. 2)	Feb/14/2022 17:35	643	4	+110	1627	Became Expert 20203246 → 20203246
82	Codeforces Global Round 19	Feb/12/2022 17:35	1213	4	+147	1517	Became Specialist 20203246 → 20203246
81	Codeforces Round 770 (Div. 2)	Feb/06/2022 17:35	4020	3	+9	1370
80	Codeforces Round 769 (Div. 2)	Jan/30/2022 17:35	6645	2	-44	1361	Became Pupil 20203246 → 20203246
79	Codeforces Round 768 (Div. 2)	Jan/27/2022 17:35	3890	2	-2	1405
78	Codeforces Round 767 (Div. 2)	Jan/22/2022 17:35	2688	3	+40	1407	Became Specialist 20203246 → 20203246
77	Codeforces Round 757 (Div. 2)	Nov/26/2021 14:15	3453	2	-14	1367
76	Codeforces Round 756 (Div. 3)	Nov/25/2021 17:35	5088	3	-72	1381	Became Pupil 20203246 → 20203246
75	Codeforces Global Round 17	Nov/23/2021 17:35	4555	2	-62	1453
74	Educational Codeforces Round 117 (Rated for Div. 2)	Nov/22/2021 12:35	1269	4	+25	1515
73	Codeforces Round 755 (Div. 2, based on Technocup 2022 Elimination Round 2)	Nov/14/2021 09:05	770	3	+54	1490
72	Codeforces Round 754 (Div. 2)	Nov/12/2021 17:35	1726	3	+63	1436	Became Specialist 20203246 → 20203246
71	Codeforces Round 753 (Div. 3)	Nov/02/2021 17:35	2308	4	+8	1373
70	Codeforces Round 752 (Div. 2)	Oct/30/2021 17:35	4585	2	-49	1365	Became Pupil 20203246 → 20203246
69	Educational Codeforces Round 116 (Rated for Div. 2)	Oct/29/2021 17:35	2530	3	+35	1414	Became Specialist 20203246 → 20203246
68	Codeforces Round 750 (Div. 2)	Oct/24/2021 13:05	3497	3	-28	1379	Became Pupil 20203246 → 20203246
67	Codeforces Round 749 (Div. 1 + Div. 2, based on Technocup 2022 Elimination Round 1)	Oct/17/2021 14:05	2608	2	+28	1407	Became Specialist 20203246 → 20203246
66	Codeforces Round 748 (Div. 3)	Oct/13/2021 17:35	1087	5	+84	1379
65	Educational Codeforces Round 115 (Rated for Div. 2)	Oct/10/2021 12:05	4580	2	-55	1295
64	Codeforces Round 747 (Div. 2)	Oct/08/2021 18:05	1986	4	+69	1350
63	Codeforces Round 745 (Div. 2)	Sep/30/2021 13:15	2790	2	+10	1281
62	Codeforces Round 744 (Div. 3)	Sep/28/2021 17:35	2843	4	+40	1271
61	Educational Codeforces Round 114 (Rated for Div. 2)	Sep/20/2021 17:35	6759	2	-48	1231
60	Codeforces Global Round 16	Sep/12/2021 17:35	5302	4	-13	1279
59	Educational Codeforces Round 113 (Rated for Div. 2)	Sep/08/2021 17:35	8212	2	-82	1292
58	Codeforces Round 742 (Div. 2)	Sep/05/2021 17:35	3254	2	+23	1374
57	Deltix Round, Summer 2021 (open for everyone, rated, Div. 1 + Div. 2)	Aug/29/2021 17:35	4132	2	+9	1351
56	Codeforces Round 741 (Div. 2)	Aug/26/2021 17:35	4868	2	-23	1342
55	Codeforces Round 740 (Div. 2, based on VK Cup 2021 - Final (Engine))	Aug/24/2021 17:35	4552	2	-35	1365	Became Pupil 20203246 → 20203246
54	Codeforces Round 739 (Div. 3)	Aug/18/2021 17:35	2617	4	+4	1400	Became Specialist 20203246 → 20203246
53	Codeforces Round 738 (Div. 2)	Aug/15/2021 17:35	3650	4	+16	1396
52	Codeforces Round 737 (Div. 2)	Aug/09/2021 17:35	3116	2	+44	1380
51	Codeforces Round 736 (Div. 2)	Aug/01/2021 17:35	3296	3	+36	1336
50	Educational Codeforces Round 112 (Rated for Div. 2)	Jul/30/2021 17:35	4212	3	+27	1300
49	Codeforces Round 735 (Div. 2)	Jul/29/2021 17:35	3017	2	+89	1273	Became Pupil 20203246 → 20203246
48	Codeforces Global Round 15	Jul/25/2021 17:35	5167	1	+28	1184
47	Codeforces Round 734 (Div. 3)	Jul/23/2021 17:35	8893	2	-54	1156	Became Newbie 20203246 → 20203246
46	Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2)	Jul/22/2021 17:35	7172	3	-30	1210
45	Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine))	Jul/17/2021 17:35	7616	2	-62	1240
44	Codeforces Round 732 (Div. 2)	Jul/11/2021 17:05	1584	3	+147	1302	Became Pupil 20203246 → 20203246
43	Codeforces Round 731 (Div. 3)	Jul/10/2021 17:35	8110	2	-44	1155
42	Codeforces Round 730 (Div. 2)	Jul/07/2021 17:35	7181	2	-21	1199	Became Newbie 20203246 → 20203246
41	Codeforces Round 729 (Div. 2)	Jul/03/2021 16:05	5574	1	-12	1220
40	Codeforces Round 728 (Div. 2)	Jun/25/2021 18:35	3719	3	+56	1232	Became Pupil 20203246 → 20203246
39	Codeforces Round 727 (Div. 2)	Jun/20/2021 13:05	5463	2	-10	1176
38	Codeforces Round 726 (Div. 2)	Jun/18/2021 17:35	8445	2	-20	1186	Became Newbie 20203246 → 20203246
37	Codeforces LATOKEN Round 1 (Div. 1 + Div. 2)	Jun/13/2021 18:35	2498	3	+124	1206	Became Pupil 20203246 → 20203246
36	Educational Codeforces Round 110 (Rated for Div. 2)	Jun/04/2021 17:35	12251	1	-68	1082
35	Codeforces Round 723 (Div. 2)	May/28/2021 17:05	4377	2	+90	1150
34	Codeforces Round 722 (Div. 2)	May/24/2021 17:35	8802	1	-6	1060
33	Codeforces Round 721 (Div. 2)	May/20/2021 17:35	9899	1	-22	1066
32	Educational Codeforces Round 109 (Rated for Div. 2)	May/16/2021 11:00	4822	2	+51	1088
31	Codeforces Round 719 (Div. 3)	May/05/2021 17:35	6911	3	+45	1037
30	Educational Codeforces Round 108 (Rated for Div. 2)	Apr/29/2021 17:35	7514	2	+42	992
29	Codeforces Round 717 (Div. 2)	Apr/21/2021 16:35	5023	1	+144	950
28	Codeforces Round 716 (Div. 2)	Apr/19/2021 16:35	9891	0	-105	806
27	Codeforces Round 715 (Div. 2)	Apr/16/2021 17:35	11675	1	-82	911
26	Codeforces Round 709 (Div. 2, based on Technocup 2021 Final Round)	Mar/21/2021 16:20	5402	1	+7	993
25	Educational Codeforces Round 106 (Rated for Div. 2)	Mar/18/2021 17:50	8022	1	-22	986
24	Codeforces Round 706 (Div. 2)	Mar/10/2021 15:05	7905	0	-111	1008
23	Codeforces Round 705 (Div. 2)	Mar/06/2021 17:05	5921	1	-7	1119
22	Educational Codeforces Round 105 (Rated for Div. 2)	Mar/02/2021 17:45	6991	1	-11	1126
21	Codeforces Global Round 13	Feb/28/2021 16:35	6077	2	+23	1137
20	Codeforces Round 704 (Div. 2)	Feb/23/2021 12:05	4698	2	+39	1114
19	Codeforces Round 703 (Div. 2)	Feb/18/2021 17:35	7822	1	+10	1075
18	Codeforces Round 702 (Div. 3)	Feb/16/2021 17:35	7869	2	-42	1065
17	Educational Codeforces Round 104 (Rated for Div. 2)	Feb/15/2021 17:35	8077	1	-25	1107
16	Codeforces Round 701 (Div. 2)	Feb/12/2021 17:50	5904	1	-3	1132
15	Codeforces Round 700 (Div. 2)	Feb/07/2021 17:35	7231	1	+1	1135
14	Codeforces Round 699 (Div. 2)	Feb/05/2021 17:35	9698	1	-54	1134
13	Educational Codeforces Round 103 (Rated for Div. 2)	Jan/29/2021 17:35	8997	1	-32	1188	Became Newbie 20203246 → 20203246
12	Codeforces Round 698 (Div. 2)	Jan/28/2021 17:35	7706	2	-31	1220
11	Codeforces Round 696 (Div. 2)	Jan/19/2021 17:35	4281	2	+51	1251
10	Educational Codeforces Round 102 (Rated for Div. 2)	Jan/14/2021 17:35	5336	2	+30	1200	Became Pupil 20203246 → 20203246
9	Codeforces Round 695 (Div. 2)	Jan/08/2021 17:35	3530	1	+138	1170
8	Codeforces Round 694 (Div. 2)	Jan/05/2021 17:35	8666	1	-1	1032
7	Codeforces Round 693 (Div. 3)	Jan/04/2021 17:35	8586	2	-6	1033
6	Codeforces Round 692 (Div. 2, based on Technocup 2021 Elimination Round 3)	Dec/20/2020 18:05	4634	2	+105	1039
5	Codeforces Round 691 (Div. 2)	Dec/19/2020 12:35	6150	1	+76	934
4	Codeforces Round 690 (Div. 3)	Dec/15/2020 17:35	9767	1	+80	858
3	Codeforces Round 689 (Div. 2, based on Zed Code Competition)	Dec/11/2020 17:35	8535	1	+154	778
2	Codeforces Global Round 12	Dec/06/2020 17:35	9287	0	+214	624
1	Codeforces Round 688 (Div. 2)	Dec/04/2020 16:05	7293	1	+410	410	20203246 → 20203246

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