Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
06:05:31
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
282E	Sausage Maximization bitmasks, data structures, trees	2200	x3583
282D	Yet Another Number Game dp, games	2100	x1429
282C	XOR and OR constructive algorithms, implementation, math	1500	x9380
282B	Painting Eggs greedy, math	1500	x12924
281B	Nearest Fraction brute force, implementation, two pointers	1700	x3029
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x205
280D	k-Maximum Subsequence Sum data structures, flows, graphs, implementation	2800	x1282
280C	Game on Tree implementation, math, probabilities, trees	2200	x3980
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4533
280A	Rectangle Puzzle geometry	2000	x1467
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1443
279D	The Minimum Number of Variables bitmasks, dp	2200	x730
279C	Ladder dp, implementation, two pointers	1700	x8234
279B	Books binary search, brute force, implementation, two pointers	1400	x52373
279A	Point on Spiral brute force, geometry, implementation	1400	x5589
278B	New Problem brute force, strings	1500	x3453
277E	Binary Tree on Plane flows, trees	2400	x1282
277D	Google Code Jam dp, probabilities	2800	x336
277C	Game games, implementation	2400	x452
277B	Set of Points constructive algorithms, geometry	2300	x808
277A	Learning Languages dfs and similar, dsu	1400	x18817
276E	Little Girl and Problem on Trees data structures, graphs, trees	2100	x1599
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13735
276C	Little Girl and Maximum Sum data structures, greedy, implementation, sortings	1500	x26247
275B	Convex Shape constructive algorithms, implementation	1700	x2826
274E	Mirror Room data structures, implementation	3000	x313
274D	Lovely Matrix dfs and similar, graphs, greedy, sortings	2200	x1030
274C	The Last Hole! brute force, geometry	2600	x350
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x5001
274A	k-Multiple Free Set binary search, greedy, sortings	1500	x10030
273E	Dima and Game dp, games	2600	x366
273D	Dima and Figure dp	2400	x412
272E	Dima and Horses combinatorics, constructive algorithms, graphs	2200	x1218
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2624
272C	Dima and Staircase data structures, implementation	1500	x6779
272B	Dima and Sequence implementation, math	1400	x4020
271E	Three Horses constructive algorithms, math, number theory	2200	x490
271D	Good Substrings data structures, strings	1800	x11209
271C	Secret constructive algorithms, implementation	1500	x2945
270B	Multithreading data structures, greedy, implementation	1400	x4130
269E	String Theory geometry, math, strings	3100	x108
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x449
269C	Flawed Flow constructive algorithms, flows, graphs, greedy	2100	x1678
269B	Greenhouse Effect dp	1700	x6287
269A	Magical Boxes greedy, math	1600	x3521
268E	Playlist math, probabilities, sortings	2100	x991
268D	Wall Bars dp	2300	x508
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x13623
267C	Berland Traffic math, matrices	2700	x161
267B	Dominoes dfs and similar, graphs	2000	x636
266E	More Queries to Array... data structures, math	2500	x920
266D	BerDonalds graphs, math, shortest paths	2400	x893
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1351
264E	Roadside Trees data structures, dp	3000	x428
264D	Colorful Stones dp, two pointers	2500	x419
264C	Choosing Balls dp	2000	x2910
264B	Good Sequences dp, number theory	1500	x10140
263E	Rhombus brute force, data structures, dp	2500	x401
263D	Cycle in Graph dfs and similar, graphs	1800	x3597
263C	Circle of Numbers brute force, dfs and similar, implementation	2000	x1078
261E	Maxim and Calculator brute force, dp, two pointers	2800	x413
261D	Maxim and Increasing Subsequence dp	2600	x561
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	x5161
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	x2974
260B	Ancient Prophesy brute force, implementation, strings	1600	x3803
260A	Adding Digits implementation, math	1400	x14609
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1092
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1253
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1788
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1446
257E	Greedy Elevator data structures, implementation	2200	x285
257D	Sum greedy, math	1900	x1589
257C	View Angle brute force, geometry, math	1800	x4297
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	x1976
255C	Almost Arithmetical Progression brute force, dp	1500	x4704
254E	Dormitory dp, implementation	2100	x669
254D	Rats brute force, dfs and similar, graphs, implementation, shortest paths	2300	x538
254C	Anagram greedy, strings	1800	x1495
254B	Jury Size brute force, implementation	1500	x2150
253E	Printer binary search, data structures, implementation, sortings	2200	x528
253D	Table with Letters - 2 brute force, two pointers	2000	x831
253C	Text Editor data structures, dfs and similar, graphs, greedy, shortest paths	1600	x2599
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10678
252B	Unsorting Array brute force, sortings	1800	x1712
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x171
251D	Two Sets bitmasks, math	2700	x475
251C	Number Transformation dp, greedy, number theory	2000	x1025
251B	Playing with Permutations implementation, math	1800	x1270
250E	Mad Joe brute force	2000	x465
250D	Building Bridge geometry, ternary search, two pointers	1900	x893
250C	Movie Critics greedy	1600	x1932
250B	Restoring IPv6 implementation, strings	1500	x1980
249E	Endless Matrix math	2600	x311