Problemset - Codeforces

→ Pay attention

Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
5 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
283D	Cows and Cool Sequences dp, math, number theory	2400	x543
283C	Coin Troubles dp	2100	x1449
283B	Cow Program dfs and similar, dp, graphs	1700	x3671
283A	Cows and Sequence constructive algorithms, data structures, implementation	1600	x6585
282E	Sausage Maximization bitmasks, data structures, trees	2200	x3641
282D	Yet Another Number Game dp, games	2100	x1447
282C	XOR and OR constructive algorithms, implementation, math	1500	x9443
282B	Painting Eggs greedy, math	1500	x13028
282A	Bit++ implementation	800	x268481
281B	Nearest Fraction brute force, implementation, two pointers	1700	x3036
281A	Word Capitalization implementation, strings	800	x215796
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x207
280D	k-Maximum Subsequence Sum data structures, flows, graphs, implementation	2800	x1321
280C	Game on Tree implementation, math, probabilities, trees	2200	x4155
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4743
280A	Rectangle Puzzle geometry	2000	x1473
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1450
279D	The Minimum Number of Variables bitmasks, dp	2200	x764
279C	Ladder dp, implementation, two pointers	1700	x8292
279B	Books binary search, brute force, implementation, two pointers	1400	x54044
279A	Point on Spiral brute force, geometry, implementation	1400	x5622
278B	New Problem brute force, strings	1500	x3463
278A	Circle Line implementation	800	x11748
277E	Binary Tree on Plane flows, trees	2400	x1303
277D	Google Code Jam dp, probabilities	2800	x337
277C	Game games, implementation	2400	x453
277B	Set of Points constructive algorithms, geometry	2300	x812
277A	Learning Languages dfs and similar, dsu	1400	x19065
276E	Little Girl and Problem on Trees data structures, graphs, trees	2100	x1617
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13969
276C	Little Girl and Maximum Sum data structures, greedy, implementation, sortings	1500	x27248
276B	Little Girl and Game games, greedy	1300	x28817
276A	Lunch Rush implementation	900	x27823
275B	Convex Shape constructive algorithms, implementation	1700	x2827
275A	Lights Out implementation	900	x30488
274E	Mirror Room data structures, implementation	3000	x313
274D	Lovely Matrix dfs and similar, graphs, greedy, sortings	2200	x1044
274C	The Last Hole! brute force, geometry	2600	x350
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x5044
274A	k-Multiple Free Set binary search, greedy, sortings	1500	x10108
273E	Dima and Game dp, games	2600	x366
273D	Dima and Figure dp	2400	x417
272E	Dima and Horses combinatorics, constructive algorithms, graphs	2200	x1231
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2630
272C	Dima and Staircase data structures, implementation	1500	x6805
272B	Dima and Sequence implementation, math	1400	x4035
272A	Dima and Friends implementation, math	1000	x24785
271E	Three Horses constructive algorithms, math, number theory	2200	x505
271D	Good Substrings data structures, strings	1800	x11498
271C	Secret constructive algorithms, implementation	1500	x2999
271B	Prime Matrix binary search, brute force, math, number theory	1300	x13226
271A	Beautiful Year brute force	800	x140861
270B	Multithreading data structures, greedy, implementation	1400	x4184
270A	Fancy Fence geometry, implementation, math	1100	x45823
269E	String Theory geometry, math, strings	3100	x109
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x451
269C	Flawed Flow constructive algorithms, flows, graphs, greedy	2100	x1687
269B	Greenhouse Effect dp	1700	x6347
269A	Magical Boxes greedy, math	1600	x3535
268E	Playlist math, probabilities, sortings	2100	x1026
268D	Wall Bars dp	2300	x511
268C	Beautiful Sets of Points constructive algorithms, implementation	1500	x13704
268B	Buttons implementation, math	1000	x32675
268A	Games brute force	800	x87657
267C	Berland Traffic math, matrices	2700	x164
267B	Dominoes dfs and similar, graphs	2000	x645
267A	Subtractions math, number theory	900	x7583
266E	More Queries to Array... data structures, math	2500	x930
266D	BerDonalds graphs, math, shortest paths	2400	x899
266C	Below the Diagonal constructive algorithms, greedy, math	2100	x1354
266B	Queue at the School constructive algorithms, graph matchings, implementation, shortest paths	800	x137191
266A	Stones on the Table implementation	800	x194480
265B	Roadside Trees (Simplified Edition) greedy, implementation	1000	x17265
265A	Colorful Stones (Simplified Edition) implementation	800	x37121
264E	Roadside Trees data structures, dp	3000	x436
264D	Colorful Stones dp, two pointers	2500	x422
264C	Choosing Balls dp	2000	x2958
264B	Good Sequences dp, number theory	1500	x10377
264A	Escape from Stones constructive algorithms, data structures, implementation, two pointers	1200	x10823
263E	Rhombus brute force, data structures, dp	2500	x403
263D	Cycle in Graph dfs and similar, graphs	1800	x3639
263C	Circle of Numbers brute force, dfs and similar, implementation	2000	x1078
263B	Squares greedy, implementation, sortings	900	x9011
263A	Beautiful Matrix implementation	800	x249203
262B	Roma and Changing Signs greedy	1200	x11440
262A	Roma and Lucky Numbers implementation	800	x20068
261E	Maxim and Calculator brute force, dp, two pointers	2800	x416
261D	Maxim and Increasing Subsequence dp	2600	x576
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x779
261B	Maxim and Restaurant dp, math, probabilities	1900	x1418
261A	Maxim and Discounts greedy, sortings	1400	x5209
260E	Dividing Kingdom binary search, brute force, data structures	2500	x459
260D	Black and White Tree constructive algorithms, dsu, graphs, greedy, trees	2100	x1556
260C	Balls and Boxes constructive algorithms, greedy, implementation	1700	x2986
260B	Ancient Prophesy brute force, implementation, strings	1600	x3829
260A	Adding Digits implementation, math	1400	x14873
259B	Little Elephant and Magic Square brute force, implementation	1100	x13994
259A	Little Elephant and Chess brute force, strings	1000	x9193
258E	Little Elephant and Tree data structures, dfs and similar, trees	2400	x1131
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1287