Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
13:00:17
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Problems

#	Name
729D	Sea Battle constructive algorithms, greedy, math	1700	x3717
727C	Guess the Array constructive algorithms, interactive, math	1400	x7319
727A	Transformation: from A to B brute force, dfs and similar, math	1000	x13733
725B	Food on the Plane implementation, math	1200	x5127
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x1051
724C	Ray Tracing greedy, hashing, implementation, math, number theory, sortings	1800	x2134
724B	Batch Sort brute force, greedy, implementation, math	1500	x4008
723A	The New Year: Meeting Friends implementation, math, sortings	800	x77109
721D	Maxim and Array constructive algorithms, data structures, greedy, math	2000	x2343
721B	Passwords implementation, math, sortings, strings	1100	x12069
718C	Sasha and Array data structures, math, matrices	2300	x3827
718A	Efim and Strange Grade dp, implementation, math	1700	x4394
717H	Pokermon League challenge math, probabilities	2400	x422
717A	Festival Organization combinatorics, math, number theory	2900	x349
715E	Complete the Permutations combinatorics, fft, graphs, math	3400	x356
715A	Plus and Square Root constructive algorithms, math	1600	x5602
714A	Meeting of Old Friends implementation, math	1100	x10763
712E	Memory and Casinos data structures, math, probabilities	2500	x613
712D	Memory and Scores combinatorics, dp, math	2200	x1828
712C	Memory and De-Evolution greedy, math	1600	x5766
712A	Memory and Crow implementation, math	800	x11876
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1263
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4443
710D	Two Arithmetic Progressions math, number theory	2500	x1291
710C	Magic Odd Square constructive algorithms, math	1500	x5087
708E	Student's Camp dp, math	3100	x972
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3236
707C	Pythagorean Triples math, number theory	1500	x12591
705B	Spider Man games, math	1100	x9112
704C	Black Widow dp, graphs, implementation, math	2900	x460
703B	Mishka and trip implementation, math	1400	x5669
702D	Road to Post Office math	1900	x3351
702B	Powers of Two brute force, data structures, implementation, math	1500	x11740
701B	Cells Not Under Attack data structures, math	1200	x11707
700A	As Fast As Possible binary search, math	1900	x3179
698D	Limak and Shooting Points brute force, geometry, math	2600	x538
698C	LRU bitmasks, dp, math, probabilities	2400	x1306
697B	Barnicle brute force, implementation, math, strings	1400	x5696
697A	Pineapple Incident implementation, math	900	x12732
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2078
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3472
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5496
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x5278
688B	Lovely Palindromes constructive algorithms, math	1000	x31850
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5822
685C	Optimal Point binary search, math	2900	x582
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4218
683D	Chocolate Bar *special problem, math	1400	x322
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x21532
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x315
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x12915
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x2194
678D	Iterated Linear Function math, number theory	1700	x4487
678C	Joty and Chocolate implementation, math, number theory	1600	x9368
678A	Johny Likes Numbers implementation, math	800	x13238
677B	Vanya and Food Processor implementation, math	1400	x7616
676E	The Last Fight Between Human and AI math	2400	x886
676B	Pyramid of Glasses implementation, math, math	1500	x5490
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7365
675A	Infinite Sequence math	1100	x14921
670A	Holidays brute force, constructive algorithms, greedy, math	900	x16885
669A	Little Artem and Presents math	800	x10759
667A	Pouring Rain geometry, math	1100	x8003
665F	Four Divisors data structures, dp, math, number theory, sortings, two pointers	2400	x609
664A	Complicated GCD math, number theory	800	x18081
663A	Rebus constructive algorithms, expression parsing, greedy, math	1800	x3286
662D	International Olympiad constructive algorithms, greedy, implementation, math	2000	x1629
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x2007
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x465
660E	Different Subsets For All Tuples combinatorics, math	2300	x1497
660A	Co-prime Array greedy, implementation, math, number theory	1200	x8808
659D	Bicycle Race geometry, implementation, math	1500	x6306
659A	Round House implementation, math	1000	x15635
653G	Move by Prime combinatorics, math, number theory	3100	x530
652F	Ants on a Circle constructive algorithms, math	2800	x546
652A	Gabriel and Caterpillar implementation, math	1400	x4621
651A	Joysticks dp, greedy, implementation, math	1100	x22888
650A	Watchmen data structures, geometry, math	1400	x15407
645F	Cowslip Collections combinatorics, math, number theory	2500	x780
645B	Mischievous Mess Makers greedy, math	1200	x3389
643F	Bears and Juice dp, math, meet-in-the-middle	2900	x699
643E	Bear and Destroying Subtrees dp, math, probabilities, trees	2700	x636
641D	Little Artem and Random Variable dp, implementation, math, probabilities	2400	x1237
639E	Bear and Paradox binary search, greedy, math, sortings	2800	x578
639C	Bear and Polynomials hashing, implementation, math	2200	x1199
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3854
633G	Yash And Trees bitmasks, data structures, dfs and similar, math, number theory	2800	x770
633D	Fibonacci-ish brute force, dp, hashing, implementation, math	2000	x2783
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x6655
633A	Ebony and Ivory brute force, math, number theory	1100	x12655
632E	Thief in a Shop divide and conquer, dp, fft, math	2400	x2741
632D	Longest Subsequence brute force, math, number theory	2100	x3749
630R	Game games, math	1200	x8591
630Q	Pyramids geometry, math	1700	x1261
630N	Forecast math	1300	x4645
630M	Turn geometry, math	1800	x1154
630L	Cracking the Code implementation, math	1400	x3551
630K	Indivisibility math, number theory	1500	x5230
630J	Divisibility math, number theory	1100	x10997
630I	Parking Lot combinatorics, math	1700	x6677