Problemset - Codeforces

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Codeforces Round 952 (Div. 4)
22:39:25
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combinatorics

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Problems

#	Name
666C	Codeword combinatorics, strings	2500	x769
660E	Different Subsets For All Tuples combinatorics, math	2300	x1247
659G	Fence Divercity combinatorics, dp, number theory	2300	x950
653G	Move by Prime combinatorics, math, number theory	3100	x522
652C	Foe Pairs combinatorics, sortings, two pointers	1800	x3119
645F	Cowslip Collections combinatorics, math, number theory	2500	x761
630I	Parking Lot combinatorics, math	1700	x6378
630H	Benches combinatorics, math	1400	x4764
630G	Challenge Pennants combinatorics, math	1600	x2657
630F	Selection of Personnel combinatorics, math	1300	x6627
630C	Lucky Numbers combinatorics, math	1100	x20847
629E	Famil Door and Roads combinatorics, data structures, dfs and similar, dp, probabilities, trees	2300	x974
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13167
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x2665
623E	Transforming Sequence combinatorics, dp, fft, math	3300	x536
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x5327
621B	Wet Shark and Bishops combinatorics, implementation	1300	x10825
617B	Chocolate combinatorics	1300	x17440
612E	Square Root of Permutation combinatorics, constructive algorithms, dfs and similar, graphs, math	2200	x1589
610A	Pasha and Stick combinatorics, math	1000	x22263
608B	Hamming Distance Sum combinatorics, strings	1500	x6660
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	1800	x2539
596C	Wilbur and Points combinatorics, greedy, sortings	1700	x2238
585E	Present for Vitalik the Philatelist combinatorics, math, number theory	2900	x1049
584B	Kolya and Tanya combinatorics	1500	x11670
577B	Modulo Sum combinatorics, data structures, dp, two pointers	1900	x11624
575H	Bots combinatorics, dp, math, number theory	1800	x1638
571A	Lengthening Sticks combinatorics, implementation, math	2100	x2068
570E	Pig and Palindromes combinatorics, dp	2300	x1813
568B	Symmetric and Transitive combinatorics, dp, math	1900	x2222
559D	Randomizer combinatorics, geometry, probabilities	2800	x424
559C	Gerald and Giant Chess combinatorics, dp, math, number theory	2200	x6205
557D	Vitaly and Cycle combinatorics, dfs and similar, graphs, math	2000	x2145
553B	Kyoya and Permutation binary search, combinatorics, constructive algorithms, greedy, implementation, math	1900	x2099
553A	Kyoya and Colored Balls combinatorics, dp, math	1500	x8411
552D	Vanya and Triangles brute force, combinatorics, data structures, geometry, math, sortings	1900	x4368
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1803
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2732
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21814
520E	Pluses everywhere combinatorics, dp, math, number theory	2200	x1815
518F	Pasha and Pipe binary search, brute force, combinatorics, dp, implementation	2300	x355
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1700	x6741
506E	Mr. Kitayuta's Gift combinatorics, dp, matrices, strings	3000	x698
501E	Misha and Palindrome Degree binary search, combinatorics, implementation	2500	x720
500D	New Year Santa Network combinatorics, dfs and similar, graphs, trees	1900	x3072
489F	Special Matrices combinatorics, dp	2100	x1601
489D	Unbearable Controversy of Being brute force, combinatorics, dfs and similar, graphs	1700	x6562
482D	Random Function and Tree combinatorics, dp, trees	2700	x522
479E	Riding in a Lift combinatorics, dp	1900	x4967
478B	Random Teams combinatorics, constructive algorithms, greedy, math	1300	x35538
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29356
466D	Increase Sequence combinatorics, dp	2100	x2902
459C	Pashmak and Buses combinatorics, constructive algorithms, math	1900	x6087
459B	Pashmak and Flowers combinatorics, implementation, sortings	1300	x38853
457D	Bingo! combinatorics, math, probabilities	2700	x270
452C	Magic Trick combinatorics, math, probabilities	2100	x1448
451E	Devu and Flowers bitmasks, combinatorics, number theory	2300	x3350
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4138
439E	Devu and Birthday Celebration combinatorics, dp, math	2100	x1499
438E	The Child and Binary Tree combinatorics, divide and conquer, fft, number theory	3100	x1804
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2147
414C	Mashmokh and Reverse Operation combinatorics, divide and conquer	2100	x2183
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x21130
407C	Curious Array brute force, combinatorics, implementation, math	2500	x959
403D	Beautiful Pairs of Numbers combinatorics, dp	2300	x1070
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x3998
396D	On Sum of Number of Inversions in Permutations combinatorics, math		x408
396A	On Number of Decompositions into Multipliers combinatorics, math, number theory		x1463
392C	Yet Another Number Sequence combinatorics, math, matrices		x583
383E	Vowels combinatorics, divide and conquer, dp	2700	x2799
382E	Ksenia and Combinatorics combinatorics, dp	2600	x369
380D	Sereja and Cinema combinatorics, math	2500	x412
374B	Inna and Nine combinatorics, greedy	1500	x3239
372E	Drawing Circles is Fun combinatorics, geometry	3000	x170
367E	Sereja and Intervals combinatorics, dp	2700	x1077
364A	Matrix combinatorics, data structures, implementation	1600	x4617
360C	Levko and Strings combinatorics, dp	2500	x1071
356C	Compartments combinatorics, constructive algorithms, greedy, implementation	2100	x1231
353B	Two Heaps combinatorics, constructive algorithms, greedy, implementation, math, sortings	1900	x2201
351B	Jeff and Furik combinatorics, dp, probabilities	1900	x2299
340E	Iahub and Permutations combinatorics, math	2000	x2311
340C	Tourist Problem combinatorics, implementation, math	1600	x4130
336E	Vasily the Bear and Painting Square bitmasks, combinatorics, dp, implementation	2700	x110
336D	Vasily the Bear and Beautiful Strings combinatorics, math, number theory	2100	x935
327E	Axis Walking bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle	2300	x1358
327C	Magic Five combinatorics, math	1700	x3137
325E	The Red Button combinatorics, dfs and similar, dsu, graphs, greedy	2800	x755
323A	Black-and-White Cube combinatorics, constructive algorithms	1600	x723
322B	Ciel and Flowers combinatorics, math	1600	x11557
319A	Malek Dance Club combinatorics, math	1600	x2766
306C	White, Black and White Again combinatorics, number theory	2100	x460
305D	Olya and Graph combinatorics, math	2200	x455
300C	Beautiful Numbers brute force, combinatorics	1800	x8976
296B	Yaroslav and Two Strings combinatorics, dp	2000	x2104
295D	Greg and Caves combinatorics, dp	2400	x640
295C	Greg and Friends combinatorics, dp, graphs, shortest paths	2100	x1665
294C	Shaass and Lights combinatorics, number theory	1900	x3728
293B	Distinct Paths brute force, combinatorics	2700	x774
288D	Polo the Penguin and Trees combinatorics, dfs and similar, trees	2400	x677
288B	Polo the Penguin and Houses combinatorics	1500	x2858