Problemset - Codeforces

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

→ Pay attention

Before contest
Kotlin Heroes: Episode 11
8 days
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
316E2	Summer Homework data structures, math	2300	x395
316E1	Summer Homework brute force, data structures	1500	x1475
316D3	PE Lesson dp, math	2400	x564
316D2	PE Lesson dp	2300	x447
316D1	PE Lesson brute force, dp	2300	x515
316C2	Tidying Up flows, graph matchings	2300	x628
316C1	Tidying Up flows	2200	x556
316B2	EKG dfs and similar, dp	1600	x1578
316B1	EKG brute force, dfs and similar	1500	x1369
316A2	Special Task math	1400	x2131
316A1	Special Task greedy	1100	x2657
315B	Sereja and Array implementation	1200	x6988
315A	Sereja and Bottles brute force	1400	x11081
314E	Sereja and Squares dp	2900	x369
314D	Sereja and Straight Lines binary search, data structures, geometry, sortings, two pointers	2500	x523
314C	Sereja and Subsequences data structures, dp	2000	x1832
314B	Sereja and Periods binary search, dfs and similar, strings	2000	x1514
314A	Sereja and Contest implementation	1600	x2069
313E	Ilya and Two Numbers constructive algorithms, data structures, dsu, greedy	2300	x545
313D	Ilya and Roads dp	2100	x1457
313C	Ilya and Matrix constructive algorithms, greedy, implementation, sortings	1400	x5609
313B	Ilya and Queries dp, implementation	1100	x43706
313A	Ilya and Bank Account implementation, number theory	900	x55903
312B	Archer math, probabilities	1300	x11448
312A	Whose sentence is it? implementation, strings	1100	x4967
311E	Biologist flows	2300	x1161
311D	Interval Cubing data structures, math	2600	x669
311C	Fetch the Treasure brute force, data structures, graphs, shortest paths	2500	x480
311B	Cats Transport data structures, dp	2400	x3401
311A	The Closest Pair constructive algorithms, implementation	1300	x4031
309E	Sheep binary search, greedy	2900	x222
309D	Tennis Rackets brute force, geometry	2700	x174
309C	Memory for Arrays binary search, bitmasks, greedy	1900	x1339
309B	Context Advertising dp, two pointers	2100	x711
309A	Morning run binary search, math, two pointers	2000	x486
306D	Polygon constructive algorithms, geometry	2300	x281
306C	White, Black and White Again combinatorics, number theory	2100	x479
306B	Optimizer data structures, greedy, sortings	2100	x442
306A	Candies implementation	800	x6767
305E	Playing with String games	2300	x625
305D	Olya and Graph combinatorics, math	2200	x506
305C	Ivan and Powers of Two greedy, implementation	1600	x2439
305B	Continued Fractions brute force, implementation, math	1700	x2056
305A	Strange Addition brute force, constructive algorithms, implementation	1600	x4759
304B	Calendar brute force, implementation	1300	x2970
304A	Pythagorean Theorem II brute force, math	1200	x10515
303E	Random Ranking dp, math, probabilities	3000	x318
303D	Rotatable Number math, number theory	2600	x296
303C	Minimum Modular brute force, graphs, math, number theory	2400	x875
303B	Rectangle Puzzle II implementation, math	1700	x1343
303A	Lucky Permutation Triple constructive algorithms, implementation, math	1300	x7887
302B	Eugeny and Play List binary search, implementation, two pointers	1200	x8088
302A	Eugeny and Array implementation	800	x9066
301E	Yaroslav and Arrangements dp	2800	x365
301D	Yaroslav and Divisors data structures	2200	x2339
301C	Yaroslav and Algorithm constructive algorithms	2500	x467
301B	Yaroslav and Time binary search, graphs, shortest paths	2100	x2388
301A	Yaroslav and Sequence constructive algorithms	1800	x3072
300E	Empire Strikes Back binary search, math, number theory	2300	x1038
300D	Painting Square dp, fft	2300	x752
300C	Beautiful Numbers brute force, combinatorics	1800	x9395
300B	Coach brute force, dfs and similar, graphs	1500	x6273
300A	Array brute force, constructive algorithms, implementation	1100	x22662
299B	Ksusha the Squirrel brute force, implementation	900	x5280
299A	Ksusha and Array brute force, number theory, sortings	1000	x8014
298B	Sail brute force, greedy, implementation	1200	x14054
298A	Snow Footprints greedy, implementation	1300	x10887
297E	Mystic Carvings data structures	3000	x372
297D	Color the Carpet constructive algorithms	2500	x586
297C	Splitting the Uniqueness constructive algorithms	2400	x954
297B	Fish Weight constructive algorithms, greedy	1600	x3473
297A	Parity Game constructive algorithms	1700	x3617
296B	Yaroslav and Two Strings combinatorics, dp	2000	x2229
296A	Yaroslav and Permutations greedy, math	1100	x22993
295E	Yaroslav and Points data structures	2500	x675
295D	Greg and Caves combinatorics, dp	2400	x647
295C	Greg and Friends combinatorics, dp, graphs, shortest paths	2100	x1690
295B	Greg and Graph dp, graphs, shortest paths	1700	x13881
295A	Greg and Array data structures, implementation	1400	x17609
294E	Shaass the Great dp, trees	2300	x930
294D	Shaass and Painter Robot brute force, implementation, number theory	2500	x361
294C	Shaass and Lights combinatorics, number theory	1900	x3795
294B	Shaass and Bookshelf dp, greedy	1700	x4522
294A	Shaass and Oskols implementation, math	800	x23347
293E	Close Vertices data structures, divide and conquer, trees	2700	x1401
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x238
293C	Cube Problem brute force, math, number theory	2400	x568
293B	Distinct Paths brute force, combinatorics	2700	x848
293A	Weird Game games, greedy	1500	x2873
292E	Copying Data data structures	1900	x4083
292D	Connected Components data structures, dfs and similar, dp, dsu	1900	x2426
292C	Beautiful IP Addresses brute force	2000	x1167
292B	Network Topology graphs, implementation	1200	x8181
292A	SMSC implementation	1100	x2691
291E	Tree-String Problem *special problem, dfs and similar, hashing, strings	2000	x1307
291D	Parallel Programming *special problem, greedy	1600	x1473
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1675
291B	Command Line Arguments *special problem, implementation, strings	1300	x3027
291A	Spyke Talks *special problem, implementation, sortings	800	x6074
290F	Greedy Petya *special problem, dfs and similar, graphs, greedy	2800	x132