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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
109	Codeforces Round 1120 (Div. 2)	Sep/12/2026 17:35	154	5	+125	1769
108	Codeforces Round 1119 (Div. 3)	Sep/05/2026 17:45	113	7	+159	1644	Became Expert Warinchai_s → Warinchai_s
107	Codeforces Round 1118 (Div. 2)	Aug/29/2026 17:35	468	4	+209	1485	Became Specialist Warinchai_s → Warinchai_s
106	Codeforces Round 1116 (Div. 2)	Aug/09/2026 17:35	12761	0	-152	1276	Became Pupil Warinchai_s → Warinchai_s
105	Educational Codeforces Round 193 (Rated for Div. 2)	Aug/07/2026 17:35	13145	0	-175	1428	Became Specialist Warinchai_s → Warinchai_s
104	Codeforces Round 1115 (Div. 2)	Aug/06/2026 17:35	2546	3	-8	1603
103	Codeforces Round 1114 (Div. 3)	Aug/04/2026 17:35	467	6	+74	1611	Became Expert Warinchai_s → Warinchai_s
102	Codeforces Round 1111 (Div. 2)	Jul/18/2026 17:35	6794	2	-130	1537	Became Specialist Warinchai_s → Warinchai_s
101	Spectral::Cup 2026 Round 3 (Codeforces Round 1110, Div. 1 + Div. 2)	Jul/16/2026 17:45	1088	4	+61	1667
100	Codeforces Round 1106 (Div. 2)	Jun/28/2026 17:35	1624	4	+4	1606
99	Codeforces Round 1105 (Div. 2)	Jun/27/2026 17:35	3765	3	-74	1602
98	Order Capital Round 2 (Codeforces Round 1104, Div. 1 + Div. 2)	Jun/18/2026 17:35	4656	3	-95	1676
97	Educational Codeforces Round 191 (Rated for Div. 2)	Jun/09/2026 17:35	1218	3	-11	1771
96	Codeforces Round 1102 (Div. 2)	Jun/07/2026 17:35	2418	4	-70	1782
95	Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)	May/06/2026 09:05	617	4	-52	1852	Became Expert Warinchai_s → Warinchai_s
94	Codeforces Round 1095 (Div. 2)	Apr/28/2026 17:35	155	4	+103	1904	Became Candidate Master Warinchai_s → Warinchai_s
93	Educational Codeforces Round 189 (Rated for Div. 2)	Apr/21/2026 17:35	701	4	+24	1801
92	Codeforces Round 1093 (Div. 2)	Apr/13/2026 17:35	743	4	+9	1777
91	Codeforces Round 1091 (Div. 2) and CodeCraft 26	Apr/07/2026 17:35	2085	3	-39	1768
90	Codeforces Round 1087 (Div. 2)	Mar/21/2026 17:35	294	5	+108	1807
89	Educational Codeforces Round 188 (Rated for Div. 2)	Mar/16/2026 17:35	1130	5	+19	1699
88	Codeforces Round 1086 (Div. 2)	Mar/14/2026 17:35	952	4	+61	1680
87	Codeforces Round 1085 (Div. 1 + Div. 2)	Mar/08/2026 17:35	3652	1	-94	1619
86	Codeforces Round 1083 (Div. 2)	Feb/26/2026 17:35	1174	4	+3	1713
85	Educational Codeforces Round 187 (Rated for Div. 2)	Feb/25/2026 17:35	693	4	+69	1710
84	Codeforces Round 1081 (Div. 2)	Feb/21/2026 17:35	1703	3	+4	1641
83	Codeforces Round 1075 (Div. 2)	Jan/23/2026 17:35	2312	3	-9	1637
82	Codeforces Round 1073 (Div. 2)	Jan/17/2026 17:35	8473	2	-146	1646
81	Hello 2026	Jan/07/2026 17:35	5073	3	-108	1792	Became Expert Warinchai_s → Warinchai_s
80	Educational Codeforces Round 186 (Rated for Div. 2)	Dec/29/2025 17:35	741	5	-2	1900
79	Good Bye 2025	Dec/27/2025 17:35	725	6	+101	1902	Became Candidate Master Warinchai_s → Warinchai_s
78	Codeforces Global Round 31 (Div. 1 + Div. 2)	Dec/19/2025 17:35	3136	2	-70	1801
77	Codeforces Round 1070 (Div. 2)	Dec/11/2025 17:35	775	4	-2	1871
76	Codeforces Round 1068 (Div. 2)	Dec/05/2025 17:35	471	4	+38	1873
75	Codeforces Round 1067 (Div. 2)	Nov/29/2025 17:35	777	3	+6	1835
74	Educational Codeforces Round 185 (Rated for Div. 2)	Nov/28/2025 17:35	952	3	-2	1829
73	Codeforces Round 1066 (Div. 1 + Div. 2)	Nov/23/2025 12:35	536	5	+125	1831
72	Codeforces Round 1065 (Div. 3)	Nov/20/2025 17:35	148	7	+108	1706	Became Expert Warinchai_s → Warinchai_s
71	Codeforces Round 1064 (Div. 2)	Nov/16/2025 17:35	1689	3	0	1598
70	Educational Codeforces Round 184 (Rated for Div. 2)	Nov/14/2025 17:35	3975	3	-56	1598	Became Specialist Warinchai_s → Warinchai_s
69	Codeforces Round 1063 (Div. 2)	Nov/10/2025 18:05	4553	1	-102	1654
68	Codeforces Global Round 30 (Div. 1 + Div. 2)	Nov/06/2025 17:35	1783	3	+1	1756
67	Codeforces Round 1061 (Div. 2)	Oct/24/2025 17:35	2140	3	-43	1755
66	Codeforces Round 1060 (Div. 2)	Oct/19/2025 17:35	564	4	+56	1798
65	Codeforces Round 1058 (Div. 2)	Oct/12/2025 17:35	69	5	+218	1742	Became Expert Warinchai_s → Warinchai_s
64	Codeforces Round 1057 (Div. 2)	Oct/10/2025 17:35	4146	3	-28	1524
63	Educational Codeforces Round 183 (Rated for Div. 2)	Oct/06/2025 17:35	3162	3	-11	1552
62	Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)	Oct/03/2025 17:35	8036	1	-126	1563	Became Specialist Warinchai_s → Warinchai_s
61	Codeforces Round 1053 (Div. 2)	Sep/24/2025 14:35	1091	4	0	1689
60	Codeforces Global Round 29 (Div. 1 + Div. 2)	Sep/20/2025 17:35	2315	3	+10	1689
59	Codeforces Round 1051 (Div. 2)	Sep/17/2025 17:35	2824	3	-39	1679
58	Codeforces Round 1046 (Div. 2)	Aug/28/2025 17:35	1336	4	+1	1718
57	Codeforces Round 1045 (Div. 2)	Aug/26/2025 17:35	1467	3	+21	1717
56	Codeforces Round 1044 (Div. 2)	Aug/24/2025 17:35	1414	3	+28	1696
55	Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)	Aug/07/2025 17:35	3067	3	-24	1668
54	Codeforces Round 1040 (Div. 2)	Jul/31/2025 17:35	4290	3	-87	1692
53	Codeforces Round 1039 (Div. 2)	Jul/27/2025 17:35	1851	4	-30	1779
52	Educational Codeforces Round 181 (Rated for Div. 2)	Jul/22/2025 17:35	958	4	+18	1809
51	Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)	Jul/19/2025 17:35	824	3	+124	1791
50	Codeforces Round 1037 (Div. 3)	Jul/17/2025 17:35	243	6	+102	1667	Became Expert Warinchai_s → Warinchai_s
49	EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)	Jul/06/2025 17:35	850	5	+174	1565	Became Specialist Warinchai_s → Warinchai_s
48	Codeforces Round 1035 (Div. 2)	Jul/05/2025 17:35	14066	0	-152	1391	Became Pupil Warinchai_s → Warinchai_s
47	Codeforces Round 1034 (Div. 3)	Jul/01/2025 17:35	535	6	+102	1543
46	Educational Codeforces Round 180 (Rated for Div. 2)	Jun/23/2025 17:35	5642	3	-40	1441
45	Codeforces Round 1033 (Div. 2) and CodeNite 2025	Jun/21/2025 17:35	3090	3	+9	1481
44	Codeforces Round 1032 (Div. 3)	Jun/17/2025 17:35	10071	2	-108	1472
43	Codeforces Round 1031 (Div. 2)	Jun/15/2025 12:05	3719	2	-78	1580	Became Specialist Warinchai_s → Warinchai_s
42	Codeforces Round 1030 (Div. 2)	Jun/12/2025 17:35	7883	2	-124	1658
41	Educational Codeforces Round 179 (Rated for Div. 2)	Jun/03/2025 17:35	300	5	+113	1782
40	Codeforces Round 1028 (Div. 2)	May/31/2025 17:35	940	3	+55	1669
39	Codeforces Round 1024 (Div. 2)	May/11/2025 17:35	2414	3	-40	1614
38	Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)	Apr/19/2025 17:35	2089	3	+36	1654
37	Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)	Apr/05/2025 17:35	2350	4	+17	1618
36	Educational Codeforces Round 177 (Rated for Div. 2)	Apr/03/2025 17:35	4667	3	-67	1601
35	Codeforces Round 1014 (Div. 2)	Mar/29/2025 17:35	2673	3	-24	1668
34	Codeforces Round 1008 (Div. 2)	Mar/10/2025 17:45	4087	2	-88	1692
33	Codeforces Round 1000 (Div. 2)	Jan/22/2025 15:05	1466	3	-3	1780
32	Codeforces Round 997 (Div. 2)	Jan/17/2025 17:35	733	3	+47	1783
31	Hello 2025	Jan/04/2025 17:35	1494	4	+70	1736
30	Educational Codeforces Round 173 (Rated for Div. 2)	Dec/24/2024 17:35	1316	3	+30	1666
29	Codeforces Round 994 (Div. 2)	Dec/20/2024 17:35	1376	3	+46	1636	Became Expert Warinchai_s → Warinchai_s
28	Codeforces Global Round 28	Dec/19/2024 17:35	3431	4	-21	1590	Became Specialist Warinchai_s → Warinchai_s
27	CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)	Nov/23/2024 17:35	2643	4	-11	1611
26	Codeforces Round 988 (Div. 3)	Nov/17/2024 17:35	485	5	+49	1622	Became Expert Warinchai_s → Warinchai_s
25	Codeforces Round 984 (Div. 3)	Nov/02/2024 17:35	684	5	+57	1573
24	Codeforces Round 981 (Div. 3)	Oct/24/2024 17:35	705	5	+87	1516
23	Codeforces Round 958 (Div. 2)	Jul/15/2024 17:35	8627	2	-89	1429
22	Codeforces Round 950 (Div. 3)	Jun/03/2024 17:35	5369	3	-59	1518
21	Codeforces Round 933 (Div. 3)	Mar/11/2024 17:35	1078	5	+35	1577
20	Codeforces Round 920 (Div. 3)	Jan/15/2024 17:35	925	5	+56	1542
19	Codeforces Round 919 (Div. 2)	Jan/13/2024 17:35	1471	3	+96	1486	Became Specialist Warinchai_s → Warinchai_s
18	Good Bye 2023	Dec/30/2023 17:50	7958	2	-34	1390	Became Pupil Warinchai_s → Warinchai_s
17	Codeforces Round 916 (Div. 3)	Dec/19/2023 17:35	6867	3	-85	1424
16	Educational Codeforces Round 156 (Rated for Div. 2)	Oct/09/2023 17:35	991	3	+128	1509	Became Specialist Warinchai_s → Warinchai_s
15	Codeforces Round 888 (Div. 3)	Jul/25/2023 17:35	2848	4	+17	1381
14	Codeforces Round 887 (Div. 2)	Jul/23/2023 17:35	7826	1	-90	1364	Became Pupil Warinchai_s → Warinchai_s
13	Codeforces Round 885 (Div. 2)	Jul/16/2023 17:35	2212	2	+29	1454
12	Codeforces Round 884 (Div. 1 + Div. 2)	Jul/11/2023 17:35	4163	4	+9	1425
11	Codeforces Round 883 (Div. 3)	Jul/07/2023 17:35	1850	5	+37	1416	Became Specialist Warinchai_s → Warinchai_s
10	Codeforces Round 882 (Div. 2)	Jul/06/2023 17:35	6336	2	-60	1379	Became Pupil Warinchai_s → Warinchai_s
9	Educational Codeforces Round 151 (Rated for Div. 2)	Jun/29/2023 17:35	3961	2	-17	1439
8	CodeTON Round 5 (Div. 1 + Div. 2, Rated, Prizes!)	Jun/24/2023 17:05	2890	3	+23	1456
7	Codeforces Round 881 (Div. 3)	Jun/20/2023 17:35	1500	5	+42	1433	Became Specialist Warinchai_s → Warinchai_s
6	Codeforces Round 880 (Div. 2)	Jun/18/2023 17:35	2021	2	+103	1391
5	Codeforces Round 879 (Div. 2)	Jun/18/2023 11:05	2366	3	+151	1288	Became Pupil Warinchai_s → Warinchai_s
4	Codeforces Round 878 (Div. 3)	Jun/06/2023 17:35	1668	4	+250	1137
3	Codeforces Round 843 (Div. 2)	Jan/10/2023 14:15	4171	2	+281	887
2	Codeforces Round 807 (Div. 2)	Jul/15/2022 16:35	10345	1	+257	606
1	Codeforces Round 803 (Div. 2)	Jun/28/2022 17:35	13778	0	+349	349	Warinchai_s → Warinchai_s

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