Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 940 (Div. 2) and CodeCraft-23
2 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

interactive

Add tag

Problems

#	Name
1428H	Rotary Laser Lock binary search, interactive	3500	x83
1761G	Centroid Guess interactive, probabilities, trees	3500	x95
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x121
1444E	Finding the Vertex brute force, dfs and similar, dp, interactive, trees	3500	x129
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x142
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x186
1147F	Zigzag Game games, interactive	3500	x235
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x326
1442F	Differentiating Games games, interactive	3400	x126
1158E	Strange device binary search, interactive, math, trees	3400	x146
1299E	So Mean interactive, math	3400	x147
1466I	The Riddle of the Sphinx binary search, data structures, data structures, interactive	3400	x178
1578I	Interactive Rays geometry, interactive	3300	x58
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x111
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x315
1764G3	Doremy's Perfect DS Class (Hard Version) binary search, interactive	3300	x426
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x108
772E	Verifying Kingdom binary search, divide and conquer, interactive, trees	3200	x121
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x167
1091G	New Year and the Factorisation Collaboration interactive, math, number theory	3200	x188
1819E	Roads in E City interactive, math, probabilities, trees	3200	x239
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x247
1482G	Vabank binary search, interactive	3200	x261
1746E2	Joking (Hard Version) dp, interactive	3200	x361
1336D	Yui and Mahjong Set constructive algorithms, interactive	3200	x456
1142E	Pink Floyd graphs, interactive	3200	x479
1499G	Graph Coloring data structures, graphs, interactive	3100	x184
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x327
1129E	Legendary Tree binary search, interactive, trees	3100	x367
1340E	Nastya and Bees graphs, interactive, probabilities	3000	x51
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x139
1906C	Cursed Game interactive	3000	x157
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x249
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x288
1147E	Rainbow Coins interactive	3000	x320
788D	Finding lines constructive algorithms, divide and conquer, interactive	3000	x355
1007C	Guess two numbers binary search, interactive	3000	x399
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x457
1764G2	Doremy's Perfect DS Class (Medium Version) binary search, interactive	3000	x491
1854D	Michael and Hotel binary search, interactive, trees	3000	x517
1028G	Guess the number dp, interactive	3000	x524
1438F	Olha and Igor interactive, probabilities, trees	3000	x604
1290D	Coffee Varieties (hard version) constructive algorithms, graphs, interactive	3000	x642
927A	BuberPool Taxi Optimization *special problem, interactive	2900	x1
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x124
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x311
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x372
1764G1	Doremy's Perfect DS Class (Easy Version) binary search, interactive	2900	x542
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x569
1423M	Milutin's Plums interactive	2800	x144
1633F	Perfect Matching data structures, divide and conquer, interactive, trees	2800	x303
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x335
1721F	Matching Reduction brute force, constructive algorithms, dfs and similar, flows, graph matchings, graphs, interactive	2800	x357
750F	New Year and Finding Roots constructive algorithms, implementation, interactive, trees	2800	x460
1291F	Coffee Varieties (easy version) graphs, interactive	2800	x479
1033E	Hidden Bipartite Graph binary search, constructive algorithms, dfs and similar, graphs, interactive	2800	x576
1286C2	Madhouse (Hard version) brute force, constructive algorithms, hashing, interactive, math	2800	x605
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x686
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x911
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x981
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x248
1372F	Omkar and Modes binary search, divide and conquer, interactive	2700	x420
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x436
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x443
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x498
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x570
1491F	Magnets binary search, constructive algorithms, interactive	2700	x894
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1107
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1226
1090F	How to Learn You Score constructive algorithms, interactive	2600	x296
1773H	Hot and Cold binary search, interactive	2600	x336
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x364
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x372
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x443
1354G	Find a Gift binary search, interactive, probabilities	2600	x717
1267I	Intriguing Selection brute force, constructive algorithms, implementation, interactive, sortings	2600	x725
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x803
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x841
1858E2	Rollbacks (Hard Version) data structures, interactive, trees	2600	x995
1406E	Deleting Numbers interactive, math, number theory	2600	x1536
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x1923
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x278
1089C	Cactus Search interactive	2500	x400
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x453
1776I	Spinach Pizza games, geometry, greedy, interactive	2500	x633
1776C	Library game games, greedy, interactive, sortings	2500	x749
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x827
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x884
1470C	Strange Shuffle binary search, brute force, constructive algorithms, interactive	2500	x1294
1746E1	Joking (Easy Version) binary search, constructive algorithms, interactive, ternary search	2500	x1333
1403A	The Potion of Great Power *special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers	2400	x283
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x668
1061F	Lost Root interactive, probabilities	2400	x678
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x765
1205C	Palindromic Paths implementation, interactive	2400	x1113
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1121
835E	The penguin's game binary search, constructive algorithms, interactive	2400	x1122
1738F	Connectivity Addicts constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees	2400	x1141
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1145
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1174

←