Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Codeforces Round (Div. 2)
7 days

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
261D	Maxim and Increasing Subsequence dp	2600	x562
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x774
261B	Maxim and Restaurant dp, math, probabilities	1900	x1409
261A	Maxim and Discounts greedy, sortings	1400	x5174
260E	Dividing Kingdom binary search, brute force, data structures	2500	x455
260D	Black and White Tree constructive algorithms, dsu, graphs, greedy, trees	2100	x1538
260C	Balls and Boxes constructive algorithms, greedy, implementation	1700	x2981
260B	Ancient Prophesy brute force, implementation, strings	1600	x3805
260A	Adding Digits implementation, math	1400	x14647
259B	Little Elephant and Magic Square brute force, implementation	1100	x13945
259A	Little Elephant and Chess brute force, strings	1000	x9127
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1093
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1254
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1788
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1446
258A	Little Elephant and Bits greedy, math	1100	x22901
257E	Greedy Elevator data structures, implementation	2200	x285
257D	Sum greedy, math	1900	x1595
257C	View Angle brute force, geometry, math	1800	x4301
257B	Playing Cubes games, greedy, implementation	1300	x7052
257A	Sockets greedy, implementation, sortings	1100	x6477
256E	Lucky Arrays data structures	2400	x666
256D	Liars and Serge dp	2700	x256
255E	Furlo and Rublo and Game games, implementation, math	2200	x854
255D	Mr. Bender and Square binary search, implementation, math	1800	x1981
255C	Almost Arithmetical Progression brute force, dp	1500	x4712
255B	Code Parsing implementation	1200	x4965
255A	Greg's Workout implementation	800	x28521
254E	Dormitory dp, implementation	2100	x671
254D	Rats brute force, dfs and similar, graphs, implementation, shortest paths	2300	x540
254C	Anagram greedy, strings	1800	x1497
254B	Jury Size brute force, implementation	1500	x2151
254A	Cards with Numbers constructive algorithms, sortings	1200	x7044
253E	Printer binary search, data structures, implementation, sortings	2200	x528
253D	Table with Letters - 2 brute force, two pointers	2000	x840
253C	Text Editor data structures, dfs and similar, graphs, greedy, shortest paths	1600	x2602
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10704
253A	Boys and Girls greedy	1100	x11236
252B	Unsorting Array brute force, sortings	1800	x1712
252A	Little Xor brute force, implementation	1100	x5282
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x171
251D	Two Sets bitmasks, math	2700	x476
251C	Number Transformation dp, greedy, number theory	2000	x1026
251B	Playing with Permutations implementation, math	1800	x1270
251A	Points on Line binary search, combinatorics, two pointers	1300	x17626
250E	Mad Joe brute force	2000	x465
250D	Building Bridge geometry, ternary search, two pointers	1900	x893
250C	Movie Critics greedy	1600	x1935
250B	Restoring IPv6 implementation, strings	1500	x1980
250A	Paper Work greedy	1000	x4090
249E	Endless Matrix math	2600	x312
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x456
248E	Piglet's Birthday dp, math, probabilities	2600	x579
248D	Sweets for Everyone! binary search, greedy, implementation	2300	x494
248C	Robo-Footballer binary search, geometry	2000	x848
248B	Chilly Willy math, number theory	1400	x5309
248A	Cupboards implementation	800	x22260
246E	Blood Cousins Return binary search, data structures, dfs and similar, dp, sortings	2400	x3206
246D	Colorful Graph brute force, dfs and similar, graphs	1600	x9430
246C	Beauty Pageant brute force, constructive algorithms, greedy	1600	x2630
246B	Increase and Decrease greedy, math	1300	x11286
246A	Buggy Sorting constructive algorithms, greedy, sortings	900	x9246
245H	Queries for Number of Palindromes dp, hashing, strings	1800	x6634
245G	Suggested Friends brute force, graphs	2200	x433
245F	Log Stream Analysis binary search, brute force, implementation, strings	2000	x876
245E	Mishap in Club greedy, implementation	1400	x3278
245D	Restoring Table constructive algorithms, greedy	1500	x2304
245C	Game with Coins greedy	1700	x1548
245B	Internet Address implementation, strings	1100	x5219
245A	System Administrator implementation	800	x8403
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x4474
244A	Dividing Orange implementation	900	x7900
243E	Matrix data structures	3000	x191
243D	Cubes data structures, dp, geometry, two pointers	2700	x214
243C	Colorado Potato Beetle dfs and similar, implementation	2200	x529
243B	Hydra graphs, sortings	2000	x1225
243A	The Brand New Function bitmasks	1600	x3916
242E	XOR on Segment bitmasks, data structures	2000	x9124
242D	Dispute dfs and similar, graphs, greedy	2100	x1873
242C	King's Path dfs and similar, graphs, hashing, shortest paths	1800	x8617
242B	Big Segment implementation, sortings	1100	x15702
242A	Heads or Tails brute force, implementation	1100	x6375
241G	Challenging Balloons constructive algorithms	1900	x548
241F	Race brute force, implementation	2300	x263
241E	Flights graphs, shortest paths	2600	x1077
241D	Numbers	2900	x374
241C	Mirror Box geometry, implementation	2000	x512
241B	Friends binary search, bitmasks, data structures, math	2700	x805
241A	Old Peykan greedy	1300	x2231
240F	TorCoder data structures	2600	x1942
240E	Road Repairs dfs and similar, graphs, greedy	2800	x356
239B	Easy Tape Programming brute force, implementation	1500	x1371
239A	Two Bags of Potatoes greedy, implementation, math	1200	x18838
238E	Meeting Her dp, graphs, shortest paths	2600	x389
238D	Tape Programming data structures, implementation	2900	x247
238C	World Eater Brothers dfs and similar, dp, greedy, trees	2100	x1231
238B	Boring Partition constructive algorithms	1800	x1290
238A	Not Wool Sequences constructive algorithms, math	1300	x2036
237E	Build String flows, graphs	2000	x1708
237D	T-decomposition dfs and similar, graphs, greedy, trees	2000	x562