Problemset - Codeforces

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Educational Codeforces Round 71 (Rated for Div. 2)
42:59:43

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Problems

#	Name
1198F	GCD Groups 2 greedy, number theory, probabilities	2900	x199
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2500	x379
1190F	Tokitsukaze and Powers number theory, probabilities	3300	x24
1187F	Expected Square Beauty dp, math, probabilities	2600	x298
1172C2	Nauuo and Pictures (hard version) dp, probabilities	2700	x323
1172C1	Nauuo and Pictures (easy version) dp, probabilities	2500	x531
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3100	x73
1156F	Card Bag dp, math, probabilities	2500	x481
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2500	x485
1153F	Serval and Bonus Problem combinatorics, dp, math, probabilities	2800	x317
1139D	Steps to One dp, math, number theory, probabilities	2300	x765
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2100	x1629
1097D	Makoto and a Blackboard dp, math, number theory, probabilities	2200	x1545
1096F	Inversion Expectation dp, math, probabilities	2300	x782
1096E	The Top Scorer combinatorics, dp, math, probabilities	2600	x278
1081G	Mergesort Strikes Back math, probabilities	3000	x81
1061F	Lost Root interactive, probabilities	2400	x315
1067D	Computer Game dp, greedy, math, probabilities	2800	x81
1045D	Interstellar battle math, probabilities, trees	2600	x311
1042E	Vasya and Magic Matrix dp, math, probabilities	2300	x733
1039B	Subway Pursuit binary search, interactive, probabilities	2100	x1383
1009E	Intercity Travelling combinatorics, math, probabilities	1900	x1662
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2900	x149
960E	Alternating Tree combinatorics, dfs and similar, divide and conquer, dp, probabilities, trees	2200	x752
952D	I'm Feeling Lucky! probabilities	2000	x1640
949F	Astronomy geometry, probabilities	3200	x28
930B	Game with String implementation, probabilities, strings	1800	x1759
935D	Fafa and Ancient Alphabet math, probabilities	1900	x1655
913H	Don't Exceed math, probabilities	3400	x51
913F	Strongly Connected Tournament dp, graphs, math, probabilities	2700	x264
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x1207
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x1300
896C	Willem, Chtholly and Seniorious data structures, probabilities	2700	x567
895E	Eyes Closed data structures, probabilities	2500	x446
870D	Something with XOR Queries brute force, interactive, probabilities	2100	x829
859D	Third Month Insanity dp, probabilities, trees	2100	x620
846F	Random Query data structures, math, probabilities, two pointers	2000	x920
843B	Interactive LowerBound brute force, interactive, probabilities	2000	x1399
840D	Destiny data structures, probabilities	2400	x593
839C	Journey dfs and similar, dp, graphs, probabilities, trees	1500	x6476
802F	Marmots (hard) math, probabilities	2800	x76
768F	Barrels and boxes brute force, combinatorics, math, number theory, probabilities	2300	x648
768D	Jon and Orbs dp, math, probabilities	2100	x1428
749E	Inversions After Shuffle data structures, probabilities	2600	x473
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	2900	x562
717H	Pokermon League challenge math, probabilities	2400	x292
717D	Dexterina’s Lab games, matrices, probabilities	1900	x871
712E	Memory and Casinos data structures, math, probabilities	2700	x358
711E	ZS and The Birthday Paradox math, number theory, probabilities	2400	x970
698C	LRU bitmasks, dp, math, probabilities	2700	x804
696B	Puzzles dfs and similar, math, probabilities, trees	1800	x2315
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x215
643E	Bear and Destroying Subtrees dp, math, probabilities, trees	2600	x285
641D	Little Artem and Random Variable dp, implementation, math, probabilities	2300	x676
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x196
633E	Startup Funding binary search, data structures, probabilities, two pointers	2400	x440
629E	Famil Door and Roads dfs and similar, dp, probabilities, trees	2400	x549
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x1952
623D	Birthday greedy, math, probabilities	2600	x278
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x3253
618G	Combining Slimes dp, math, matrices, probabilities	3300	x77
605E	Intergalaxy Trips probabilities, shortest paths	2600	x348
601C	Kleofáš and the n-thlon dp, math, probabilities	2400	x860
596D	Wilbur and Trees dp, math, probabilities, sortings	2500	x534
559D	Randomizer combinatorics, geometry, probabilities	2800	x241
553E	Kyoya and Train dp, fft, graphs, math, probabilities	3300	x182
540D	Bad Luck Island dp, probabilities	2100	x2757
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1900	x3616
513G2	Inversions problem dp, probabilities	2400	x415
513C	Second price auction bitmasks, probabilities	2000	x1235
498B	Name That Tune dp, probabilities, two pointers	2500	x832
494C	Helping People dp, probabilities	2900	x393
482C	Game with Strings bitmasks, dp, probabilities	2800	x516
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x10989
464D	World of Darkraft - 2 dp, probabilities	2600	x352
457D	Bingo! combinatorics, math, probabilities	2700	x113
453A	Little Pony and Expected Maximum probabilities	1600	x5252
452C	Magic Trick combinatorics, math, probabilities	2100	x1031
446D	DZY Loves Games math, matrices, probabilities	2800	x173
444B	DZY Loves FFT probabilities	2400	x754
442B	Andrey and Problem greedy, math, probabilities	1800	x3156
441E	Valera and Number bitmasks, dp, math, probabilities	2700	x290
424E	Colored Jenga dfs and similar, dp, probabilities	2500	x70
417E	Square Table constructive algorithms, math, probabilities	2400	x555
398B	Painting The Wall dp, probabilities		x629
364D	Ghd brute force, math, probabilities	2600	x589
351B	Jeff and Furik combinatorics, dp, probabilities	2100	x1541
345A	Expecting Trouble *special problem, probabilities	1600	x349
335E	Counting Skyscrapers dp, math, probabilities	2900	x110
312B	Archer math, probabilities	1300	x4907
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x170
280C	Game on Tree implementation, math, probabilities, trees	2400	x1315
277D	Google Code Jam dp, probabilities	2700	x197
268E	Playlist math, probabilities, sortings	2100	x732
261B	Maxim and Restaurant dp, math, probabilities	2100	x1009
258D	Little Elephant and Broken Sorting dp, math, probabilities	2600	x577
248E	Piglet's Birthday dp, math, probabilities	2700	x269
235B	Let's Play Osu! dp, math, probabilities	2100	x1422
229E	Gifts combinatorics, dp, math, probabilities	2500	x327
204C	Little Elephant and Furik and Rubik math, probabilities	2200	x785

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