Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
08:11:27
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4674
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7905
1195C	Basketball Exercise dp	1400	x26528
1195B	Sport Mafia binary search, brute force, math	1000	x19977
1195A	Drinks Choosing greedy, math	1000	x13166
1194G	Another Meme Problem dp	2700	x262
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x998
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1941
1194D	1-2-K Game games, math	1700	x6602
1194C	From S To T implementation, strings	1300	x13279
1194B	Yet Another Crosses Problem implementation	1300	x10340
1194A	Remove a Progression math	800	x16375
1193C	Scissors and Tape *special problem, constructive algorithms, geometry		x40
1193B	Magic Tree *special problem, data structures, dp, trees		x441
1193A	Amusement Park *special problem, dp, math		x278
1192C	Cubeword *special problem, brute force, dp, meet-in-the-middle		x334
1192B	Dynamic Diameter *special problem, data structures, dfs and similar, divide and conquer, trees		x1234
1192A	Building Skyscrapers *special problem		x62
1191B	Tokitsukaze and Mahjong brute force, implementation	1200	x9618
1191A	Tokitsukaze and Enhancement brute force	800	x18206
1190F	Tokitsukaze and Powers number theory, probabilities	3400	x93
1190E	Tokitsukaze and Explosion binary search, greedy	3100	x227
1190D	Tokitsukaze and Strange Rectangle data structures, divide and conquer, sortings, two pointers	2000	x2311
1190C	Tokitsukaze and Duel brute force, games, greedy	2300	x2032
1190B	Tokitsukaze, CSL and Stone Game games	1800	x6470
1190A	Tokitsukaze and Discard Items implementation, two pointers	1400	x9393
1189C	Candies! data structures, dp, implementation, math	1400	x10624
1189B	Number Circle greedy, math, sortings	1100	x14337
1189A	Keanu Reeves strings	800	x15331
1188E	Problem from Red Panda combinatorics	3300	x244
1188D	Make Equal dp	3100	x723
1188C	Array Beauty dp	2500	x1794
1188B	Count Pairs math, matrices, number theory, two pointers	2300	x4589
1188A2	Add on a Tree: Revolution constructive algorithms, dfs and similar, implementation, trees	2500	x1247
1188A1	Add on a Tree trees	1600	x8448
1187G	Gang Up flows, graphs	2500	x577
1187F	Expected Square Beauty dp, math, probabilities	2500	x888
1187E	Tree Painting dfs and similar, dp, trees	2100	x8521
1187D	Subarray Sorting data structures, sortings	2400	x2654
1187C	Vasya And Array constructive algorithms, greedy, implementation	1800	x6382
1187B	Letters Shop binary search, implementation, strings	1300	x12303
1187A	Stickers and Toys math	900	x14911
1186F	Vus the Cossack and a Graph dfs and similar, graphs, greedy, implementation	2400	x789
1186E	Vus the Cossack and a Field divide and conquer, implementation, math	2500	x630
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8970
1186C	Vus the Cossack and Strings implementation, math	1800	x6141
1186A	Vus the Cossack and a Contest implementation	800	x37880
1185G2	Playlist for Polycarp (hard version) combinatorics, dp	2600	x768
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2889
1185F	Two Pizzas bitmasks, brute force	2100	x2054
1185E	Polycarp and Snakes brute force, implementation	2000	x2668
1185D	Extra Element implementation, math	1700	x6747
1185C2	Exam in BerSU (hard version) brute force, data structures, greedy, math	1700	x7482
1185C1	Exam in BerSU (easy version) greedy, sortings	1200	x11439
1185B	Email from Polycarp implementation, strings	1200	x13442
1185A	Ropewalkers math	800	x14933
1184E3	Daleks' Invasion (hard) data structures, dsu, graphs, trees	2400	x581
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x955
1184E1	Daleks' Invasion (easy) graphs, trees	1900	x1628
1184D2	Parallel Universes (Hard) math, matrices	3100	x107
1184D1	Parallel Universes (Easy) implementation	1600	x2548
1184C3	Heidi and the Turing Test (Hard)	3200	x41
1184C2	Heidi and the Turing Test (Medium) data structures	2200	x633
1184C1	Heidi and the Turing Test (Easy) implementation	1600	x2302
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x174
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x593
1184B1	The Doctor Meets Vader (Easy) binary search, sortings	1400	x5436
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x139
1184A2	Heidi Learns Hashing (Medium) brute force, number theory	2100	x1001
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5992
1183H	Subsequences (hard version) dp, strings	1900	x3202
1183G	Candy Box (hard version) greedy, implementation, sortings	2000	x2384
1183F	Topforces Strikes Back brute force, math, sortings	2100	x2033
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x4891
1183D	Candy Box (easy version) greedy, sortings	1400	x14613
1183C	Computer Game binary search, math	1400	x14062
1183B	Equalize Prices math	900	x18568
1183A	Nearest Interesting Number implementation	800	x25103
1182F	Maximum Sine binary search, data structures, number theory	2700	x345
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2860
1182D	Complete Mirror constructive algorithms, dfs and similar, dp, hashing, implementation, trees	2400	x861
1182C	Beautiful Lyrics data structures, greedy, strings	1700	x4428
1182B	Plus from Picture dfs and similar, implementation, strings	1300	x11181
1182A	Filling Shapes dp, math	1000	x31452
1181E2	A Story of One Country (Hard) brute force, greedy, sortings	3000	x290
1181E1	A Story of One Country (Easy) brute force, divide and conquer, sortings	2500	x484
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2200	x2426
1181C	Flag brute force, combinatorics, dp, implementation	1900	x3157
1181B	Split a Number greedy, implementation, strings	1500	x6328
1181A	Chunga-Changa greedy, math	1000	x13700
1180B	Nick and Array greedy, implementation	1500	x9596
1180A	Alex and a Rhombus dp, implementation, math	800	x25427
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x176
1179D	Fedor Runs for President data structures, dp, trees	2700	x845
1179C	Serge and Dining Room binary search, data structures, graph matchings, greedy, implementation, math, trees	2200	x2086
1179B	Tolik and His Uncle constructive algorithms	1800	x4393
1179A	Valeriy and Deque data structures, implementation	1500	x10663
1178H	Stock Exchange binary search, flows, graphs	3500	x232
1178G	The Awesomest Vertex data structures, dfs and similar	3000	x472
1178F2	Long Colorful Strip dp	2600	x910