Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
21:03:48
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Problems

#	Name
476D	Dreamoon and Sets constructive algorithms, greedy, math	1900	x4312
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4351
552D	Vanya and Triangles brute force, combinatorics, data structures, geometry, math, sortings	1900	x4353
1270D	Strange Device constructive algorithms, interactive, math, sortings	1900	x4361
1613D	MEX Sequences dp, math	1900	x4428
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4600
1294E	Obtain a Permutation greedy, implementation, math	1900	x4682
1898D	Absolute Beauty greedy, math	1900	x4691
1821D	Black Cells binary search, brute force, greedy, math	1900	x4741
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4755
1593D2	Half of Same brute force, math, number theory	1900	x4787
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x4845
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x4864
803C	Maximal GCD constructive algorithms, greedy, math	1900	x4905
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4947
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5058
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5089
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5098
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5163
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5172
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5179
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x5246
1744E2	Divisible Numbers (hard version) brute force, math, number theory	1900	x5246
552C	Vanya and Scales brute force, dp, greedy, math, meet-in-the-middle, number theory	1900	x5381
1490G	Old Floppy Drive binary search, data structures, math	1900	x5464
1701D	Permutation Restoration binary search, data structures, greedy, math, sortings, two pointers	1900	x5472
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5539
1207E	XOR Guessing bitmasks, interactive, math	1900	x5597
1545B	AquaMoon and Chess combinatorics, math	1900	x5618
1700D	River Locks binary search, dp, greedy, math	1900	x5822
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x5921
1444B	Divide and Sum combinatorics, math, sortings	1900	x6030
459C	Pashmak and Buses combinatorics, constructive algorithms, math	1900	x6063
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6139
1475G	Strange Beauty dp, math, number theory, sortings	1900	x6388
1656D	K-good constructive algorithms, math, number theory	1900	x6583
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x6652
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x7373
1627D	Not Adding brute force, dp, math, number theory	1900	x7808
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8251
1348D	Phoenix and Science binary search, constructive algorithms, greedy, implementation, math	1900	x8479
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x9781
72A	Goshtasp, Vishtasp and Eidi *special problem, greedy, math	1800	x181
64E	Prime Segment *special problem, brute force, math, number theory	1800	x234
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x317
44D	Hyperdrive math	1800	x688
48C	The Race math	1800	x755
123B	Squares math	1800	x1091
630M	Turn geometry, math	1800	x1093
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1135
24C	Sequence of points geometry, implementation, math	1800	x1210
15B	Laser math	1800	x1247
251B	Playing with Permutations implementation, math	1800	x1249
201B	Guess That Car! math, ternary search	1800	x1252
325B	Stadium and Games binary search, math	1800	x1469
185B	Mushroom Scientists math, ternary search	1800	x1594
83B	Doctor binary search, math, sortings	1800	x1615
575H	Bots combinatorics, dp, math, number theory	1800	x1629
65A	Harry Potter and Three Spells implementation, math	1800	x1781
255D	Mr. Bender and Square binary search, implementation, math	1800	x1930
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2079
167B	Wizards and Huge Prize dp, math, probabilities	1800	x2086
724C	Ray Tracing greedy, hashing, implementation, math, number theory, sortings	1800	x2105
846F	Random Query data structures, math, probabilities, two pointers	1800	x2200
433C	Ryouko's Memory Note implementation, math, sortings	1800	x2396
1725H	Hot Black Hot White constructive algorithms, math	1800	x2497
402D	Upgrading Array dp, greedy, math, number theory	1800	x2514
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2534
77B	Falling Anvils math, probabilities	1800	x2537
1267J	Just Arrange the Icons greedy, implementation, math	1800	x2556
1250B	The Feast and the Bus brute force, constructive algorithms, greedy, math	1800	x2559
513B2	Permutations bitmasks, divide and conquer, math	1800	x2561
899D	Shovel Sale constructive algorithms, math	1800	x2677
351A	Jeff and Rounding dp, greedy, implementation, math	1800	x2680
822D	My pretty girl Noora brute force, dp, greedy, math, number theory	1800	x2953
592C	The Big Race math	1800	x3035
492D	Vanya and Computer Game binary search, implementation, math, sortings	1800	x3117
963A	Alternating Sum math, number theory	1800	x3220
663A	Rebus constructive algorithms, expression parsing, greedy, math	1800	x3245
991E	Bus Number brute force, combinatorics, math	1800	x3400
917A	The Monster dp, greedy, implementation, math	1800	x3421
1107D	Compression dp, implementation, math, number theory	1800	x3672
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x3681
1280B	Beingawesomeism implementation, math	1800	x3751
813B	The Golden Age brute force, math	1800	x3771
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3862
1138B	Circus brute force, greedy, math, strings	1800	x3936
483B	Friends and Presents binary search, math	1800	x3986
772A	Voltage Keepsake binary search, math	1800	x4068
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4127
257C	View Angle brute force, geometry, math	1800	x4186
7C	Line math, number theory	1800	x4229
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4314
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4350
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4373
1254B1	Send Boxes to Alice (Easy Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	1800	x4408
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4411
911D	Inversion Counting brute force, math	1800	x4419
1016D	Vasya And The Matrix constructive algorithms, flows, math	1800	x4421
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4550