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Codeforces Round 1123 (Div. 2)
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Codeforces Round 1123 Solution Discussion

By aryanc403

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Contests

#	Contest	Start time	Rank	Solved	Rating change	New rating
87	Educational Codeforces Round 194 (Rated for Div. 2)	Sep/08/2026 17:35	13243	1	-144	1242
86	Codeforces Round 1116 (Div. 2)	Aug/09/2026 17:35	12761	0	-167	1386	Became Pupil Katrina__ → Katrina__
85	Codeforces Round 1113 (Div. 2)	Aug/01/2026 17:35	2568	4	-19	1553
84	Educational Codeforces Round 187 (Rated for Div. 2)	Feb/25/2026 17:35	935	4	+94	1572
83	Codeforces Round 1077 (Div. 2)	Jan/29/2026 17:35	7451	2	-77	1478
82	Codeforces Round 1075 (Div. 2)	Jan/23/2026 17:35	2528	3	+11	1555
81	Codeforces Round 1073 (Div. 2)	Jan/17/2026 17:35	4688	3	-65	1544	Became Specialist Katrina__ → Katrina__
80	Hello 2026	Jan/07/2026 17:35	2112	4	+59	1609	Became Expert Katrina__ → Katrina__
79	Educational Codeforces Round 186 (Rated for Div. 2)	Dec/29/2025 17:35	3461	4	-27	1550
78	Good Bye 2025	Dec/27/2025 17:35	3864	3	+2	1577
77	Codeforces Global Round 31 (Div. 1 + Div. 2)	Dec/19/2025 17:35	2856	2	+17	1575
76	Codeforces Round 1070 (Div. 2)	Dec/11/2025 17:35	2115	3	+15	1558
75	Pinely Round 5 (Div. 1 + Div. 2)	Oct/30/2025 19:35	3621	2	-68	1543	Became Specialist Katrina__ → Katrina__
74	Codeforces Round 1061 (Div. 2)	Oct/24/2025 17:35	1708	3	+27	1611	Became Expert Katrina__ → Katrina__
73	Codeforces Round 1060 (Div. 2)	Oct/19/2025 17:35	3172	3	-33	1584	Became Specialist Katrina__ → Katrina__
72	Codeforces Round 1058 (Div. 2)	Oct/12/2025 17:35	711	4	+86	1617	Became Expert Katrina__ → Katrina__
71	Codeforces Round 1057 (Div. 2)	Oct/10/2025 17:35	3767	3	-21	1531
70	Educational Codeforces Round 183 (Rated for Div. 2)	Oct/06/2025 17:35	2745	3	+5	1552
69	Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)	Oct/03/2025 17:35	3103	3	+18	1547
68	Codeforces Round 1045 (Div. 2)	Aug/26/2025 17:35	2496	3	+37	1529
67	Codeforces Round 1040 (Div. 2)	Jul/31/2025 17:35	4832	3	-42	1492
66	Codeforces Round 1039 (Div. 2)	Jul/27/2025 17:35	7511	2	-99	1534	Became Specialist Katrina__ → Katrina__
65	Educational Codeforces Round 181 (Rated for Div. 2)	Jul/22/2025 17:35	1107	4	+73	1633	Became Expert Katrina__ → Katrina__
64	Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)	Jul/19/2025 17:35	6313	2	-80	1560	Became Specialist Katrina__ → Katrina__
63	EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)	Jul/06/2025 17:35	3135	3	-33	1640
62	Codeforces Round 880 (Div. 2)	Jun/18/2023 17:35	302	3	+116	1673	Became Expert Katrina__ → Katrina__
61	Codeforces Round 879 (Div. 2)	Jun/18/2023 11:05	1138	3	+50	1557
60	Educational Codeforces Round 150 (Rated for Div. 2)	Jun/12/2023 17:35	1508	2	+55	1507
59	Codeforces Round 877 (Div. 2)	Jun/04/2023 17:45	1616	3	+84	1452	Became Specialist Katrina__ → Katrina__
58	Codeforces Round 876 (Div. 2)	Jun/03/2023 17:35	2679	3	+18	1368
57	Codeforces Round 875 (Div. 2)	May/28/2023 17:35	7624	2	-88	1350	Became Pupil Katrina__ → Katrina__
56	Educational Codeforces Round 149 (Rated for Div. 2)	May/25/2023 17:35	3424	4	-8	1438
55	Codeforces Round 874 (Div. 3)	May/19/2023 17:35	1357	5	+30	1446
54	Codeforces Round 873 (Div. 2)	May/14/2023 17:35	3000	3	-19	1416
53	Educational Codeforces Round 148 (Rated for Div. 2)	May/12/2023 17:35	2526	3	+15	1435
52	Codeforces Round 872 (Div. 2)	May/08/2023 15:05	2379	3	-6	1420
51	Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)	Dec/17/2022 17:35	3449	2	+1	1426
50	Educational Codeforces Round 140 (Rated for Div. 2)	Dec/16/2022 17:35	3088	2	+12	1425
49	Codeforces Round 838 (Div. 2)	Dec/15/2022 17:35	2704	3	+22	1413	Became Specialist Katrina__ → Katrina__
48	Educational Codeforces Round 139 (Rated for Div. 2)	Dec/12/2022 17:35	2889	3	+15	1391
47	Codeforces Round 837 (Div. 2)	Dec/11/2022 18:35	4335	1	-40	1376	Became Pupil Katrina__ → Katrina__
46	Codeforces Global Round 24	Nov/26/2022 17:05	2071	3	+51	1416	Became Specialist Katrina__ → Katrina__
45	Codeforces Round 836 (Div. 2)	Nov/25/2022 18:35	1805	3	+77	1365
44	Codeforces Round 835 (Div. 4)	Nov/21/2022 17:35	1211	6	+85	1288
43	Pinely Round 1 (Div. 1 + Div. 2)	Nov/20/2022 17:35	5662	1	-54	1203
42	Codeforces Round 834 (Div. 3)	Nov/18/2022 17:35	2397	3	+50	1257
41	Codeforces Round 833 (Div. 2)	Nov/12/2022 17:35	4668	1	-15	1207
40	Codeforces Round 832 (Div. 2)	Nov/04/2022 17:35	4395	3	+24	1222	Became Pupil Katrina__ → Katrina__
39	Codeforces Round 830 (Div. 2)	Oct/23/2022 13:05	3029	2	+19	1198
38	Codeforces Round 829 (Div. 2)	Oct/23/2022 10:50	3796	2	+33	1179
37	Educational Codeforces Round 138 (Rated for Div. 2)	Oct/20/2022 17:35	6688	2	-23	1146
36	Educational Codeforces Round 137 (Rated for Div. 2)	Oct/17/2022 17:35	7738	2	-36	1169	Became Newbie Katrina__ → Katrina__
35	Codeforces Round 828 (Div. 3)	Oct/16/2022 17:35	6212	3	-33	1205
34	Codeforces Global Round 23	Oct/15/2022 17:35	6453	2	-41	1238
33	Codeforces Round 827 (Div. 4)	Oct/13/2022 17:35	4411	4	-24	1279
32	Codeforces Round 826 (Div. 3)	Oct/11/2022 17:35	3308	4	+12	1303
31	Codeforces Round 825 (Div. 2)	Oct/10/2022 17:35	6994	1	-64	1291
30	Dytechlab Cup 2022	Oct/07/2022 17:35	1404	3	+157	1355	Became Pupil Katrina__ → Katrina__
29	Codeforces Round 824 (Div. 2)	Oct/02/2022 17:35	8228	1	-93	1198	Became Newbie Katrina__ → Katrina__
28	Codeforces Global Round 22	Sep/30/2022 17:35	4224	2	+4	1291
27	Educational Codeforces Round 136 (Rated for Div. 2)	Sep/29/2022 17:35	4634	2	-12	1287
26	Codeforces Round 823 (Div. 2)	Sep/25/2022 17:35	7413	1	-89	1299
25	Codeforces Round 822 (Div. 2)	Sep/23/2022 15:05	1733	3	+77	1388
24	Codeforces Round 821 (Div. 2)	Sep/19/2022 17:35	3400	3	+25	1311
23	Codeforces Round 820 (Div. 3)	Sep/12/2022 17:35	3246	4	+26	1286
22	Educational Codeforces Round 135 (Rated for Div. 2)	Sep/08/2022 17:35	6043	2	-31	1260
21	Codeforces Round 818 (Div. 2)	Sep/02/2022 17:35	2288	3	+92	1291	Became Pupil Katrina__ → Katrina__
20	Codeforces Round 817 (Div. 4)	Aug/30/2022 17:50	5805	4	-22	1199	Became Newbie Katrina__ → Katrina__
19	Educational Codeforces Round 134 (Rated for Div. 2)	Aug/27/2022 17:35	5021	2	+9	1221
18	Codeforces Round 816 (Div. 2)	Aug/20/2022 17:35	3811	2	+65	1212	Became Pupil Katrina__ → Katrina__
17	Codeforces Round 814 (Div. 2)	Aug/16/2022 17:35	6537	2	+1	1147
16	Codeforces Round 813 (Div. 2)	Aug/13/2022 17:35	7174	3	+7	1146
15	Codeforces Round 812 (Div. 2)	Aug/06/2022 17:35	6993	2	-13	1139
14	Educational Codeforces Round 133 (Rated for Div. 2)	Aug/04/2022 17:35	6825	2	+7	1152
13	Codeforces Round 811 (Div. 3)	Aug/01/2022 17:35	4436	3	+42	1145
12	CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!)	Jul/31/2022 17:05	7407	2	-33	1103
11	Codeforces Round 810 (Div. 2)	Jul/24/2022 17:35	12342	1	-119	1136	Became Newbie Katrina__ → Katrina__
10	Educational Codeforces Round 132 (Rated for Div. 2)	Jul/21/2022 17:35	2398	2	+124	1255	Became Pupil Katrina__ → Katrina__
9	Codeforces Round 809 (Div. 2)	Jul/18/2022 17:35	7196	2	-4	1131
8	Codeforces Round 808 (Div. 2)	Jul/16/2022 17:35	7740	2	-23	1135
7	Codeforces Round 807 (Div. 2)	Jul/15/2022 16:35	8802	2	-61	1158	Became Newbie Katrina__ → Katrina__
6	Codeforces Round 806 (Div. 4)	Jul/12/2022 17:35	3407	5	+78	1219	Became Pupil Katrina__ → Katrina__
5	Codeforces Round 805 (Div. 3)	Jul/10/2022 17:35	9568	2	+26	1141
4	Educational Codeforces Round 131 (Rated for Div. 2)	Jul/08/2022 17:35	8082	2	+87	1115
3	Codeforces Round 804 (Div. 2)	Jul/04/2022 17:35	3994	2	+268	1028
2	Codeforces Round 803 (Div. 2)	Jun/28/2022 17:35	5058	3	+339	760
1	Codeforces Global Round 21	Jun/25/2022 17:35	7742	2	+421	421	Katrina__ → Katrina__

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