Problemset - Codeforces

→ Pay attention

Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
11 days
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
289B	Polo the Penguin and Matrix brute force, dp, implementation, sortings, ternary search	1400	x16753
288E	Polo the Penguin and Lucky Numbers dp, implementation, math	2800	x283
285E	Positions in Permutations combinatorics, dp, math	2600	x930
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1507
283D	Cows and Cool Sequences dp, math, number theory	2400	x522
283C	Coin Troubles dp	2100	x1230
283B	Cow Program dfs and similar, dp, graphs	1700	x3607
282D	Yet Another Number Game dp, games	2100	x1378
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x196
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1410
279D	The Minimum Number of Variables bitmasks, dp	2200	x691
279C	Ladder dp, implementation, two pointers	1700	x8048
277D	Google Code Jam dp, probabilities	2800	x324
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x12976
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x4889
273E	Dima and Game dp, games	2600	x359
273D	Dima and Figure dp	2400	x385
269D	Maximum Waterfall data structures, dp, graphs, sortings	2600	x413
269B	Greenhouse Effect dp	1700	x6119
268D	Wall Bars dp	2300	x498
264E	Roadside Trees data structures, dp	3000	x396
264D	Colorful Stones dp, two pointers	2500	x406
264C	Choosing Balls dp	2000	x2665
264B	Good Sequences dp, number theory	1500	x9622
263E	Rhombus brute force, data structures, dp	2500	x394
261E	Maxim and Calculator brute force, dp, two pointers	2800	x403
261D	Maxim and Increasing Subsequence dp	2600	x553
261C	Maxim and Matrix constructive algorithms, dp, math	2000	x759
261B	Maxim and Restaurant dp, math, probabilities	1900	x1362
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x1211
258C	Little Elephant and LCM binary search, combinatorics, dp, math	2000	x1757
258B	Little Elephant and Elections brute force, combinatorics, dp	1900	x1420
256D	Liars and Serge dp	2700	x255
255C	Almost Arithmetical Progression brute force, dp	1500	x4622
254E	Dormitory dp, implementation	2100	x484
253B	Physics Practical binary search, dp, sortings, two pointers	1400	x10324
251E	Tree and Table dfs and similar, dp, implementation, trees	3000	x168
251C	Number Transformation dp, greedy, number theory	2000	x1011
249D	Donkey and Stars data structures, dp, geometry, math, sortings	2700	x375
248E	Piglet's Birthday dp, math, probabilities	2600	x563
246E	Blood Cousins Return binary search, data structures, dfs and similar, dp, sortings	2400	x2967
245H	Queries for Number of Palindromes dp, hashing, strings	1800	x5965
243D	Cubes data structures, dp, geometry, two pointers	2700	x208
238E	Meeting Her dp, graphs, shortest paths	2600	x338
238C	World Eater Brothers dfs and similar, dp, greedy, trees	2100	x1021
235E	Number Challenge combinatorics, dp, implementation, math, number theory	2600	x741
235B	Let's Play Osu! dp, math, probabilities	2000	x3347
234F	Fence dp	1800	x1712
234C	Weather dp, implementation	1300	x5335
232E	Quick Tortoise bitmasks, divide and conquer, dp	3000	x674
232C	Doe Graphs constructive algorithms, divide and conquer, dp, graphs, shortest paths	2600	x279
232B	Table bitmasks, combinatorics, dp, math	1900	x1387
231E	Cactus data structures, dfs and similar, dp, graphs, trees	2100	x1539
229E	Gifts combinatorics, dp, math, probabilities	2600	x450
229D	Towers dp, greedy, two pointers	2100	x2103
228C	Fractal Detector dp, hashing	2000	x441
225C	Barcode dp, matrices	1700	x8758
223B	Two Strings data structures, dp, strings	1900	x1718
222E	Decoding Genome dp, matrices	1900	x2531
219D	Choosing Capital for Treeland dfs and similar, dp, graphs, trees	1700	x8597
219C	Color Stripe brute force, dp, greedy	1600	x6544
217C	Formurosa divide and conquer, dp, expression parsing	2600	x312
215E	Periodical Numbers combinatorics, dp, number theory	2100	x538
213C	Relay Race dp	2000	x2733
213B	Numbers combinatorics, dp	1900	x1664
212E	IT Restaurants dfs and similar, dp, trees	1500	x1658
212C	Cowboys combinatorics, dp, math	2100	x376
209A	Multicolored Marbles dp, math	1600	x2247
208C	Police Station dp, graphs, shortest paths	1900	x1787
208B	Solitaire dfs and similar, dp	1900	x1340
204D	Little Elephant and Retro Strings dp	2400	x396
204A	Little Elephant and Interval binary search, combinatorics, dp	1500	x5530
201D	Brand New Problem bitmasks, brute force, dp	2600	x388
201C	Fragile Bridges dp	2000	x1288
201A	Clear Symmetry constructive algorithms, dp, math	1700	x2963
191A	Dynasty Puzzles dp	1500	x3808
189A	Cut Ribbon brute force, dp	1300	x62512
187B	AlgoRace dp, shortest paths	1800	x1933
185C	Clever Fat Rat dp	2500	x130
183D	T-shirt dp, greedy, probabilities	2700	x391
182E	Wooden Fence dp	1800	x1426
180E	Cubes binary search, dp, two pointers	1800	x1719
180C	Letter dp	1400	x7060
178F2	Representative Sampling dp, sortings, strings	2200	x314
176D	Hyper String dp	2500	x301
176B	Word Cut dp	1700	x1715
175E	Power Defence brute force, dp, geometry, greedy	2600	x260
175D	Plane of Tanks: Duel brute force, dp, math, probabilities	2400	x289
174B	File List dp, greedy, implementation	1400	x2191
173C	Spiral Maximum brute force, dp	1900	x957
167B	Wizards and Huge Prize dp, math, probabilities	1800	x2090
166E	Tetrahedron dp, math, matrices	1500	x19961
166D	Shoe Store dp, graph matchings, greedy, sortings, two pointers	2500	x346
165E	Compatible Numbers bitmasks, brute force, dfs and similar, dp	2200	x6195
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x11876
163E	e-Government data structures, dfs and similar, dp, strings, trees	2800	x1524
163A	Substring and Subsequence dp	1700	x2617
161E	Polycarpus the Safecracker brute force, dp	2500	x462
161D	Distance in Tree dfs and similar, dp, trees	1800	x13567
159D	Palindrome pairs *special problem, brute force, dp, strings	1500	x4250