Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
4 days
Register now »

*has extra registration

Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
4 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1584E	Game with Stones binary search, data structures, games, greedy	2300	x1469
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3987
1584C	Two Arrays greedy, math, sortings	900	x17701
1584B	Coloring Rectangles greedy, math	1000	x14350
1584A	Mathematical Addition math	800	x15533
1583H	Omkar and Tours data structures, divide and conquer, sortings, trees	3300	x405
1583G	Omkar and Time Travel data structures, math	3000	x496
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x1536
1583E	Moment of Bloom constructive algorithms, dfs and similar, graph matchings, graphs, greedy, trees	2200	x2485
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5932
1583C	Omkar and Determination data structures, dp	1700	x7439
1583B	Omkar and Heavenly Tree constructive algorithms, trees	1200	x13247
1583A	Windblume Ode math, number theory	800	x14379
1582G	Kuzya and Homework data structures, number theory	2600	x698
1582F2	Korney Korneevich and XOR (hard version) binary search, brute force, dp, greedy, two pointers	2400	x2082
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x6574
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x4211
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x11584
1582C	Grandma Capa Knits a Scarf brute force, data structures, greedy, strings, two pointers	1200	x23602
1582B	Luntik and Subsequences combinatorics, math	900	x33298
1582A	Luntik and Concerts math	800	x19749
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x12478
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x14275
1580F	Problems for Codeforces combinatorics, fft, math	3300	x149
1580E	Railway Construction brute force, constructive algorithms, data structures, graphs, shortest paths	3400	x124
1580D	Subsequence brute force, divide and conquer, dp, greedy, trees	2900	x1101
1580C	Train Maintenance brute force, data structures, implementation	2200	x2235
1580B	Mathematics Curriculum brute force, combinatorics, dp, trees	2600	x1283
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3923
1579G	Minimal Coverage dp	2200	x2747
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x5360
1579E2	Array Optimization by Deque data structures, greedy	1700	x7363
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x25169
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x18400
1579C	Ticks greedy, implementation	1500	x11651
1579B	Shifting Sort implementation, sortings	1100	x18882
1579A	Casimir's String Solitaire math, strings	800	x41968
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x513
1578L	Labyrinth binary search, dsu, greedy	2400	x1434
1578K	Kingdom of Islands brute force, graphs, implementation	2800	x408
1578J	Just Kingdom brute force, data structures, dfs and similar	3100	x345
1578I	Interactive Rays geometry, interactive	3300	x72
1578H	Higher Order Functions implementation, strings	1700	x2168
1578G	Game of Chance math, probabilities	3500	x56
1578F	Framing Pictures geometry	2900	x187
1578E	Easy Scheduling implementation, math	1200	x4133
1578D	Dragon Curve	3200	x55
1578C	Cactus Lady and her Cing	3500	x13
1578B	Building Forest Trails data structures, dsu	2800	x475
1578A	Anti-Tetris constructive algorithms, graphs, shortest paths	2800	x422
1576A	Communication Routing Challenge *special problem
1575M	Managing Telephone Poles data structures, geometry	2400	x353
1575L	Longest Array Deconstruction data structures, divide and conquer, dp, sortings	2100	x1698
1575K	Knitting Batik implementation, math	2200	x798
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x4262
1575I	Illusions of the Desert data structures, trees	2300	x1020
1575H	Holiday Wall Ornaments dp, strings	2200	x766
1575G	GCD Festival math, number theory	2200	x833
1575F	Finding Expected Value math	2900	x138
1575E	Eye-Pleasing City Park Tour data structures, trees	2600	x395
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2870
1575C	Cyclic Sum data structures, fft, number theory	3000	x194
1575B	Building an Amusement Park binary search, geometry	2300	x538
1575A	Another Sorting Problem data structures, sortings, strings	1100	x5179
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x744
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x1038
1574D	The Strongest Build binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation	2000	x4850
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x18565
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x18217
1574A	Regular Bracket Sequences constructive algorithms	800	x23064
1573B	Swaps greedy, math, sortings	1400	x15569
1573A	Countdown greedy	800	x21949
1572F	Stations data structures	3400	x364
1572E	Polygon binary search, dp, geometry	3000	x373
1572D	Bridge Club flows, graph matchings, graphs, greedy	2800	x625
1572C	Paint dp, greedy	2700	x1718
1572B	Xor of 3 brute force, constructive algorithms, greedy, two pointers	2500	x2007
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x10425
1571J	Two Railroads *special problem	3000	x50
1571I	Physical Examination *special problem, binary search, data structures	3200	x65
1571H	Laser Beams *special problem, geometry, probabilities	2900	x56
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x84
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x225
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x374
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x368
1571C	Rhyme *special problem, implementation	1800	x401
1571B	Epic Novel *special problem, math	1300	x759
1571A	Sequence of Comparisons *special problem	800	x1643
1569F	Palindromic Hamiltonian Path brute force, dfs and similar, dp, graphs, hashing	3000	x380
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x875
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4600
1569C	Jury Meeting combinatorics, math	1500	x13337
1569B	Chess Tournament constructive algorithms	1000	x19860
1569A	Balanced Substring implementation	800	x26550
1567F	One-Four Overload 2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation	2700	x880
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x4131
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4852
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x13152
1567B	MEXor Mixup bitmasks, greedy	1000	x32877
1567A	Domino Disaster implementation, strings	800	x31710

The only programming contests Web 2.0 platform

Server time: May/02/2026 08:14:05 (g2).

Desktop version, switch to mobile version.

Supported by