Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
47:04:20
Register now »

*has extra registration

Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
47:04:20
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
706B	Interesting drink binary search, dp, implementation	1100	x84332
704C	Black Widow dp, graphs, implementation, math	2900	x525
704B	Ant Man dp, graphs, greedy	2500	x2168
703E	Mishka and Divisors dp, number theory	2600	x670
702A	Maximum Increase dp, greedy, implementation	800	x54987
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x4641
698C	LRU bitmasks, dp, math, probabilities	2400	x1443
698A	Vacations dp	1400	x37927
696D	Legen... data structures, dp, matrices, strings	2500	x1614
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2217
691F	Couple Cover brute force, dp, number theory	2200	x1437
690D3	The Wall (hard) dp	2100	x630
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x2130
687C	The Values You Can Make dp	1900	x8334
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x5355
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4501
682D	Alyona and Strings dp, strings	1900	x3514
682C	Alyona and the Tree dfs and similar, dp, graphs, trees	1600	x8080
679B	Bear and Tower of Cubes binary search, dp, greedy	2200	x2231
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x2726
677E	Vanya and Balloons binary search, brute force, dp, implementation	2300	x755
677D	Vanya and Treasure data structures, dp, graphs, shortest paths	2300	x1958
676C	Vasya and String binary search, dp, strings, two pointers	1500	x22428
675E	Trains and Statistic data structures, dp, greedy	2300	x3331
671D	Roads in Yusland data structures, dp, greedy	2900	x1313
671A	Recycling Bottles dp, geometry, greedy, implementation	1800	x4376
666A	Reberland Linguistics dp, implementation, strings	1800	x3808
665F	Four Divisors data structures, dp, math, number theory, sortings, two pointers	2400	x749
665C	Simple Strings dp, greedy, strings	1300	x17226
662E	To Hack or not to Hack brute force, dp, greedy	3100	x164
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x2425
660C	Hard Process binary search, dp, two pointers	1600	x10750
659G	Fence Divercity combinatorics, dp, number theory	2300	x1317
653B	Bear and Compressing brute force, dfs and similar, dp, strings	1300	x5333
651A	Joysticks dp, greedy, implementation, math	1100	x24136
650D	Zip-line binary search, data structures, dp, hashing	2600	x1595
650C	Table Compression dfs and similar, dp, dsu, graphs, greedy	2200	x2180
650B	Image Preview binary search, brute force, dp, two pointers	1900	x3490
645E	Intellectual Inquiry dp, greedy, strings	2200	x1407
645D	Robot Rapping Results Report binary search, dp, graphs	1800	x3337
643F	Bears and Juice dp, math, meet-in-the-middle	2900	x819
643E	Bear and Destroying Subtrees dp, math, probabilities, trees	2700	x700
643C	Levels and Regions dp	2400	x1727
641D	Little Artem and Random Variable dp, implementation, math, probabilities	2400	x1575
637D	Running with Obstacles *special problem, data structures, dp, greedy	1600	x2125
633F	The Chocolate Spree dfs and similar, dp, graphs, trees	2600	x1378
633D	Fibonacci-ish brute force, dp, hashing, implementation, math	2000	x3051
633C	Spy Syndrome 2 data structures, dp, hashing, implementation, sortings, string suffix structures, strings	1900	x3373
632E	Thief in a Shop divide and conquer, dp, fft, math	2400	x3548
631E	Product Sum data structures, dp, geometry	2600	x3200
629E	Famil Door and Roads combinatorics, data structures, dfs and similar, dp, probabilities, trees	2300	x1150
629D	Babaei and Birthday Cake data structures, dp	2000	x4496
629C	Famil Door and Brackets dp, strings	2000	x3022
628D	Magic Numbers dp	2200	x8271
628B	New Skateboard dp	1300	x12059
627D	Preorder Test binary search, dfs and similar, dp, graphs, greedy, trees	2600	x999
627A	XOR Equation dp, math	1700	x4798
626G	Raffles data structures, dp, greedy, math	3100	x607
626F	Group Projects dp	2400	x3591
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x3159
626B	Cards constructive algorithms, dp, math	1300	x6920
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x614
623C	Electric Charges binary search, dp	2900	x526
623B	Array GCD dp, greedy, number theory	2300	x2370
621E	Wet Shark and Blocks dp, matrices	2000	x3243
618G	Combining Slimes dp, math, matrices, probabilities	3300	x271
618D	Hamiltonian Spanning Tree dfs and similar, dp, graph matchings, greedy, trees	2200	x1895
615C	Running Track dp, greedy, strings, trees	2000	x2464
615B	Longtail Hedgehog dp, graphs	1600	x5740
613E	Puzzle Lover dp, hashing, strings	3200	x526
613D	Kingdom and its Cities dfs and similar, divide and conquer, dp, graphs, sortings, trees	2800	x4031
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2476
612F	Simba on the Circle dp	2600	x466
611D	New Year and Ancient Prophecy dp, hashing, strings	2000	x2744
611C	New Year and Domino dp, implementation	1500	x9006
607B	Zuma dp	1900	x16292
607A	Chain Reaction binary search, dp	1600	x10811
603A	Alternative Thinking dp, greedy, math	1600	x8251
602B	Approximating a Constant Range dp, implementation, two pointers	1400	x12069
601E	A Museum Robbery data structures, dp	2800	x1141
601C	Kleofáš and the n-thlon dp, math, probabilities	2300	x1413
599E	Sandy and Nuts bitmasks, dp, trees	2600	x761
598E	Chocolate Bar brute force, dp	2000	x6083
597C	Subsequences data structures, dp	1900	x6602
597B	Restaurant dp, greedy, sortings	1600	x5665
596E	Wilbur and Strings dfs and similar, dp, graphs, strings	2500	x425
596D	Wilbur and Trees dp, math, probabilities, sortings	2300	x729
593E	Strange Calculation and Cats dp, matrices	2400	x700
592D	Super M dfs and similar, dp, graphs, trees	2200	x2966
590D	Top Secret Task dp	2300	x1333
587B	Duff in Beach dp	2100	x1496
585F	Digits of Number Pi dp, implementation, strings	3200	x797
582E	Boolean Function bitmasks, dp, expression parsing	3000	x547
582D	Number of Binominal Coefficients dp, math, number theory	3300	x739
582B	Once Again... constructive algorithms, dp, matrices	1900	x3643
581F	Zublicanes and Mumocrates dp, trees, two pointers	2400	x1034
581E	Kojiro and Furrari dp, greedy	2800	x220
580D	Kefa and Dishes bitmasks, dp	1800	x11866
580A	Kefa and First Steps brute force, dp, implementation	900	x104649
578D	LCS Again dp, greedy	2700	x961

The only programming contests Web 2.0 platform

Server time: May/04/2026 10:00:41 (h1).

Desktop version, switch to mobile version.

Supported by