Problemset - Codeforces

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Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
32:57:15
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Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
32:57:15
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Problems

#	Name
36D	New Game with a Chess Piece games	2300	x769
36C	Bowls geometry, implementation	2200	x380
36B	Fractal implementation	1600	x2034
35E	Parade data structures, sortings	2100	x880
35D	Animals dp, greedy	1700	x3860
35C	Fire Again brute force, dfs and similar, shortest paths	1500	x8615
35B	Warehouse implementation	1700	x1195
34E	Collisions brute force, implementation, math	2000	x653
34D	Road Map dfs and similar, graphs	1600	x6486
33E	Helper	2600	x152
33D	Knights geometry, graphs, shortest paths, sortings	2000	x1561
33C	Wonderful Randomized Sum greedy	1800	x3579
33B	String Problem shortest paths	1800	x5722
32E	Hide-and-Seek geometry, implementation	2400	x423
32D	Constellation implementation	1600	x1491
32C	Flea math	1700	x2563
31E	TV Game dp	2400	x1298
31D	Chocolate dfs and similar, implementation	2000	x1228
31C	Schedule implementation	1700	x2026
31B	Sysadmin Bob greedy, implementation, strings	1500	x4743
30E	Tricky and Clever Password binary search, constructive algorithms, data structures, greedy, hashing, strings	2800	x920
30D	King's Problem? geometry, greedy	2600	x498
30C	Shooting Gallery dp, probabilities	1800	x2393
30B	Codeforces World Finals implementation	1700	x1387
30A	Accounting brute force, math	1400	x3986
29E	Quarrel graphs, shortest paths	2400	x1132
29D	Ant on the Tree constructive algorithms, dfs and similar, trees	2000	x2938
29C	Mail Stamps data structures, dfs and similar, graphs, implementation	1700	x6477
29B	Traffic Lights implementation	1500	x3349
28E	DravDe saves the world geometry, math	2800	x109
28D	Don't fear, DravDe is kind binary search, data structures, dp, hashing	2400	x676
28C	Bath Queue combinatorics, dp, probabilities	2200	x1288
28B	pSort dfs and similar, dsu, graphs	1600	x5515
28A	Bender Problem implementation	1600	x970
27E	Number With The Given Amount Of Divisors brute force, dp, number theory	2000	x4906
27D	Ring Road 2 2-sat, dfs and similar, dsu, graphs	2200	x3090
27C	Unordered Subsequence constructive algorithms, greedy	1900	x3064
26E	Multithreading constructive algorithms	2400	x413
26D	Tickets combinatorics, math, probabilities	2400	x932
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x1013
26B	Regular Bracket Sequence greedy	1400	x25846
25E	Test hashing, strings	2200	x3157
25D	Roads not only in Berland dsu, graphs, trees	1900	x15575
25C	Roads in Berland graphs, shortest paths	1900	x8071
24E	Berland collider binary search	2300	x1025
24D	Broken robot dp, math, probabilities	2400	x2651
24C	Sequence of points geometry, implementation, math	1800	x1444
24B	F1 Champions implementation	1500	x2033
24A	Ring road graphs	1400	x6852
23E	Tree dp	2500	x725
23D	Tetragon geometry, math	2600	x380
23C	Oranges and Apples constructive algorithms, sortings	2500	x1693
23B	Party constructive algorithms, graphs, math	1600	x3861
22E	Scheme dfs and similar, graphs, trees	2300	x2078
22D	Segments greedy, sortings	1900	x3412
22C	System Administrator graphs	1700	x3809
22B	Bargaining Table brute force, dp	1500	x4783
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x1293
21C	Stripe 2 binary search, dp, sortings	2000	x2539
21B	Intersection implementation, math	2000	x1583
21A	Jabber ID implementation, strings	1900	x2271
20C	Dijkstra? graphs, shortest paths	1900	x46860
20B	Equation math	2000	x4802
20A	BerOS file system implementation	1700	x7127
19E	Fairy dfs and similar, divide and conquer, dsu	2900	x2512
19D	Points data structures	2800	x3168
19C	Deletion of Repeats greedy, hashing, string suffix structures	2200	x1325
19B	Checkout Assistant dp	1900	x5822
19A	World Football Cup implementation	1400	x3141
18E	Flag 2 dp	2000	x1269
18D	Seller Bob brute force, dp, greedy	2000	x1290
18B	Platforms brute force, math	1700	x2428
18A	Triangle brute force, geometry	1500	x6952
17E	Palisection strings	2900	x1990
17D	Notepad number theory	2400	x1328
17C	Balance dp	2500	x1027
17B	Hierarchy dfs and similar, dsu, greedy, shortest paths	1500	x6116
16E	Fish bitmasks, dp, probabilities	1900	x6540
16D	Logging implementation, strings	1900	x1866
16C	Monitor binary search, number theory	1800	x5417
15E	Triangles combinatorics, dp	2600	x673
15D	Map data structures, implementation, sortings	2500	x913
15C	Industrial Nim games	2000	x2837
15B	Laser math	1800	x1680
14E	Camels dp	1900	x2061
14D	Two Paths dfs and similar, dp, graphs, shortest paths, trees, two pointers	1900	x5283
14C	Four Segments brute force, constructive algorithms, geometry, implementation, math	1700	x3857
13E	Holes data structures, dsu	2700	x7944
13D	Triangles dp, geometry	2600	x735
13C	Sequence dp, sortings	2200	x5468
13B	Letter A geometry, implementation	2000	x1123
12E	Start of the session constructive algorithms	2100	x1452
12D	Ball data structures, sortings	2400	x2885
11E	Forward, march! binary search, dp, greedy	2800	x439
11D	A Simple Task bitmasks, dp, graphs	2200	x6382
11C	How Many Squares? implementation	2200	x691
11B	Jumping Jack math	1600	x5707
10E	Greedy Change constructive algorithms	2600	x924
10D	LCIS dp	2800	x5627
10C	Digital Root number theory	2000	x1700

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