Problemset - Codeforces

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Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
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Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
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Problems

#	Name
75D	Big Maximum Sum data structures, dp, greedy, implementation, math, trees	2000	x2051
74B	Train dp, games, greedy	1500	x1785
73C	LionAge II dp	1800	x2487
72G	Fibonacci army *special problem, dp	1000	x2833
71E	Nuclear Fusion bitmasks, dp	2200	x943
71C	Round Table Knights dp, math, number theory	1600	x7325
70E	Information Reform dp, implementation, trees	2700	x589
69D	Dot dp, games	1900	x1129
68D	Half-decay tree data structures, divide and conquer, dp, math, probabilities	2500	x531
67D	Optical Experiment binary search, data structures, dp	1900	x1777
67C	Sequence of Balls dp	2600	x745
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2479
66E	Petya and Post data structures, dp	2000	x926
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x855
62E	World Evil dp, flows	2700	x282
58E	Expression dp	2400	x462
57D	Journey dp, math	2500	x360
56D	Changing a String dp	2100	x2087
55D	Beautiful numbers dp, number theory	2500	x4620
54D	Writing a Song brute force, dp, strings	2100	x709
54C	First Digit Law dp, math, probabilities	2000	x1639
53E	Dead Ends bitmasks, dp	2500	x1275
51F	Caterpillar dfs and similar, dp, graphs, trees	2800	x816
50D	Bombing binary search, dp, probabilities	2100	x707
49E	Common ancestor dp	2300	x798
49D	Game brute force, dp, implementation	1800	x2136
48G	Galaxy Union dp, trees, two pointers	2700	x324
48E	Ivan the Fool VS Gorynych the Dragon dp, games, graphs	2100	x705
46E	Comb data structures, dp	1900	x1158
45B	School dp, dsu	2200	x319
44H	Phone Number dp	1700	x2003
44E	Anfisa the Monkey dp	1400	x6111
41D	Pawn dp	1900	x2895
39E	What Has Dirichlet Got to Do with That? dp, games	2000	x1033
39C	Moon Craters dp, sortings	2100	x697
38H	The Great Marathon dp	2400	x445
38F	Smart Boy dp, games, strings	2100	x446
38E	Let's Go Rolling! dp, sortings	1800	x2998
37D	Lesson Timetable combinatorics, dp, math	2300	x555
35D	Animals dp, greedy	1700	x3860
31E	TV Game dp	2400	x1298
30C	Shooting Gallery dp, probabilities	1800	x2392
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x676
28C	Bath Queue combinatorics, dp, probabilities	2200	x1287
27E	Number With The Given Amount Of Divisors brute force, dp, number theory	2000	x4905
24D	Broken robot dp, math, probabilities	2400	x2645
23E	Tree dp	2500	x725
22B	Bargaining Table brute force, dp	1500	x4782
21C	Stripe 2 binary search, dp, sortings	2000	x2539
19B	Checkout Assistant dp	1900	x5822
18E	Flag 2 dp	2000	x1269
18D	Seller Bob brute force, dp, greedy	2000	x1290
17C	Balance dp	2500	x1025
16E	Fish bitmasks, dp, probabilities	1900	x6538
15E	Triangles combinatorics, dp	2600	x673
14E	Camels dp	1900	x2060
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x5282
13D	Triangles dp, geometry	2600	x735
13C	Sequence dp, sortings	2200	x5468
11E	Forward, march! binary search, dp, greedy	2800	x439
11D	A Simple Task bitmasks, dp, graphs	2200	x6382
10D	LCIS dp	2800	x5627
10B	Cinema Cashier dp, implementation	1500	x2052
9D	How many trees? combinatorics, divide and conquer, dp	1900	x4500
8E	Beads dp, graphs	2600	x758
8C	Looking for Order bitmasks, dp	2000	x4212
7E	Defining Macros dp, expression parsing, implementation	2600	x777
6D	Lizards and Basements 2 brute force, dp	2600	x2279
5C	Longest Regular Bracket Sequence constructive algorithms, data structures, dp, greedy, sortings, strings	1900	x18059
4D	Mysterious Present dp, sortings	1700	x12101
2B	The least round way dp, math	2000	x12939

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