Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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Problems

#	Name
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1156
1738F	Connectivity Addicts constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees	2400	x1145
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1138
835E	The penguin's game binary search, constructive algorithms, interactive	2400	x1123
1205C	Palindromic Paths implementation, interactive	2400	x1115
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1108
1599H	Hidden Fortress interactive, math	2100	x1006
1858E2	Rollbacks (Hard Version) data structures, interactive, trees	2600	x998
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x982
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x914
1491F	Magnets binary search, constructive algorithms, interactive	2700	x896
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x889
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x842
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x830
1355F	Guess Divisors Count constructive algorithms, interactive, number theory	2600	x805
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x766
1776C	Library game games, greedy, interactive, sortings	2500	x750
1267I	Intriguing Selection brute force, constructive algorithms, implementation, interactive, sortings	2600	x727
1354G	Find a Gift binary search, interactive, probabilities	2600	x718
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x686
1061F	Lost Root interactive, probabilities	2400	x681
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x669
1290D	Coffee Varieties (hard version) constructive algorithms, graphs, interactive	3000	x662
1776I	Spinach Pizza games, geometry, greedy, interactive	2500	x634
1438F	Olha and Igor interactive, probabilities, trees	3000	x607
1286C2	Madhouse (Hard version) brute force, constructive algorithms, hashing, interactive, math	2800	x606
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x580
1033E	Hidden Bipartite Graph binary search, constructive algorithms, dfs and similar, graphs, interactive	2800	x578
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x570
1764G1	Doremy's Perfect DS Class (Easy Version) binary search, interactive	2900	x544
1028G	Guess the number dp, interactive	3000	x527
1854D	Michael and Hotel binary search, interactive, trees	3000	x520
1291F	Coffee Varieties (easy version) graphs, interactive	2800	x501
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x500
1764G2	Doremy's Perfect DS Class (Medium Version) binary search, interactive	3000	x494
916D	Jamie and To-do List data structures, interactive, trees	2200	x487
1142E	Pink Floyd graphs, interactive	3200	x480
750F	New Year and Finding Roots constructive algorithms, implementation, interactive, trees	2800	x461
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x458
1336D	Yui and Mahjong Set constructive algorithms, interactive	3200	x457
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x453
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x445
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x445
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x436
1764G3	Doremy's Perfect DS Class (Hard Version) binary search, interactive	3300	x428
1372F	Omkar and Modes binary search, divide and conquer, interactive	2700	x421
1089C	Cactus Search interactive	2500	x401
1007C	Guess two numbers binary search, interactive	3000	x401
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x373
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x373
1129E	Legendary Tree binary search, interactive, trees	3100	x369
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x365
1746E2	Joking (Hard Version) dp, interactive	3200	x364
1721F	Matching Reduction brute force, constructive algorithms, dfs and similar, flows, graph matchings, graphs, interactive	2800	x359
788D	Finding lines constructive algorithms, divide and conquer, interactive	3000	x356
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x336
1773H	Hot and Cold binary search, interactive	2600	x336
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x328
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x327
1147E	Rainbow Coins interactive	3000	x321
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x316
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x312
1633F	Perfect Matching data structures, divide and conquer, interactive, trees	2800	x306
1090F	How to Learn You Score constructive algorithms, interactive	2600	x298
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x294
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x290
1403A	The Potion of Great Power *special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers	2400	x283
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x279
1482G	Vabank binary search, interactive	3200	x261
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x251
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x249
1819E	Roads in E City interactive, math, probabilities, trees	3200	x241
1147F	Zigzag Game games, interactive	3500	x237
1091G	New Year and the Factorisation Collaboration interactive, math, number theory	3200	x188
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x187
1499G	Graph Coloring data structures, graphs, interactive	3100	x185
1466I	The Riddle of the Sphinx binary search, data structures, data structures, interactive	3400	x179
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x168
1906C	Cursed Game interactive	3000	x160
1145G	AI Takeover interactive		x160
1299E	So Mean interactive, math	3400	x148
1158E	Strange device binary search, interactive, math, trees	3400	x147
1423M	Milutin's Plums interactive	2800	x144
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x143
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x140
1812H	Expected Twist *special problem, interactive		x130
1444E	Finding the Vertex brute force, dfs and similar, dp, interactive, trees	3500	x130
1442F	Differentiating Games games, interactive	3400	x127
1919H	Tree Diameter interactive, trees	2000	x126
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x125
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x122
772E	Verifying Kingdom binary search, divide and conquer, interactive, trees	3200	x122
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x116
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x109
1761G	Centroid Guess interactive, probabilities, trees	3500	x95
1275F	Шардирование постов *special problem, binary search, interactive		x91
1428H	Rotary Laser Lock binary search, interactive	3500	x85
1578I	Interactive Rays geometry, interactive	3300	x58
1340E	Nastya and Bees graphs, interactive, probabilities	3000	x52
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x14