Problemset - Codeforces

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Codeforces Round #630 (Div. 2)
10:44:19
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combinatorics

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Problems

#	Name
459B	Pashmak and Flowers combinatorics, implementation, sortings	1300	x15815
478B	Random Teams combinatorics, constructive algorithms, greedy, math	1300	x15625
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x12884
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x12626
1293B	JOE is on TV! combinatorics, greedy, math	1000	x11415
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x11012
610A	Pasha and Stick combinatorics, math	1000	x10095
414B	Mashmokh and ACM combinatorics, dp, number theory	1500	x9700
1166A	Silent Classroom combinatorics, greedy	900	x9565
1326C	Permutation Partitions combinatorics, greedy, math	1300	x9305
617B	Chocolate combinatorics	1300	x9259
630C	Lucky Numbers combinatorics, math	1100	x9084
1272C	Yet Another Broken Keyboard combinatorics, dp, implementation	1100	x9053
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x8273
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x7505
621B	Wet Shark and Bishops combinatorics, implementation	1300	x7075
251A	Points on Line binary search, combinatorics, two pointers	1400	x6979
584B	Kolya and Tanya combinatorics	1500	x6946
1284B	New Year and Ascent Sequence binary search, combinatorics, data structures, dp, implementation, sortings	1500	x6727
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x6582
1096B	Substring Removal combinatorics, math, strings	1400	x6534
1178C	Tiles combinatorics, greedy, math	1300	x6473
1236B	Alice and the List of Presents combinatorics, math	1400	x6397
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x6342
1215B	The Number of Products combinatorics, dp, implementation	1500	x6283
322B	Ciel and Flowers combinatorics, math	1600	x6067
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x5891
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x5833
152C	Pocket Book combinatorics	1500	x5552
577B	Modulo Sum combinatorics, data structures, dp, two pointers	1800	x5545
131C	The World is a Theatre combinatorics, math	1500	x5544
553A	Kyoya and Colored Balls combinatorics, dp, math	1700	x5530
1288C	Two Arrays combinatorics, dp	1600	x5455
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x5450
735C	Tennis Championship combinatorics, constructive algorithms, greedy, math	1700	x5240
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x5064
978E	Bus Video System combinatorics, math	1400	x4881
1284C	New Year and Permutation combinatorics, math	1700	x4854
489D	Unbearable Controversy of Being brute force, combinatorics, dfs and similar, graphs	1700	x4660
1327E	Count The Blocks combinatorics, dp, math	1800	x4560
1312D	Count the Arrays combinatorics, math	1700	x4522
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x4506
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x4483
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x4458
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x4395
844B	Rectangles combinatorics, math	1300	x4302
608B	Hamming Distance Sum combinatorics, strings	1500	x4220
459C	Pashmak and Buses combinatorics, constructive algorithms, math	1900	x4155
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1900	x3951
1081C	Colorful Bricks combinatorics, dp, math	1600	x3905
300C	Beautiful Numbers brute force, combinatorics	1800	x3816
630F	Selection of Personnel combinatorics, math	1500	x3808
1207D	Number Of Permutations combinatorics	1800	x3583
1036C	Classy Numbers combinatorics, dp	1800	x3519
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x3518
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x3510
204A	Little Elephant and Interval binary search, combinatorics, dp	1600	x3503
479E	Riding in a Lift combinatorics, dp	2000	x3404
1238D	AB-string binary search, combinatorics, dp, strings	1800	x3365
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x3273
364A	Matrix combinatorics, data structures, implementation	1800	x3263
552D	Vanya and Triangles brute force, combinatorics, data structures, geometry, math, sortings	1900	x3177
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x3168
986B	Petr and Permutations combinatorics, math	1800	x3124
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1700	x3123
559C	Gerald and Giant Chess combinatorics, dp, math, number theory	2500	x3088
1043D	Mysterious Crime brute force, combinatorics, math, meet-in-the-middle, two pointers	1700	x3085
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x3044
1279D	Santa's Bot combinatorics, math, probabilities	1700	x3038
1102E	Monotonic Renumeration combinatorics, sortings	1800	x2997
888D	Almost Identity Permutations combinatorics, dp, math	1600	x2963
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x2941
869C	The Intriguing Obsession combinatorics, dp, math	1800	x2921
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x2871
340C	Tourist Problem combinatorics, implementation, math	1700	x2802
1276B	Two Fairs combinatorics, dfs and similar, dsu, graphs	1900	x2515
150B	Quantity of Strings combinatorics, dfs and similar, graphs, math	1800	x2488
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x2485
630H	Benches combinatorics, math	1700	x2466
500D	New Year Santa Network combinatorics, dfs and similar, graphs, trees	1900	x2458
171B	Star *special problem, combinatorics	1300	x2363
1172B	Nauuo and Circle combinatorics, dfs and similar, dp, trees	2000	x2349
374B	Inna and Nine combinatorics, greedy	1600	x2280
327C	Magic Five combinatorics, math	1700	x2254
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x2236
124B	Permutations brute force, combinatorics, implementation	1400	x2231
997B	Roman Digits brute force, combinatorics, dp, greedy, math	2000	x2168
991E	Bus Number brute force, combinatorics, math	1800	x2149
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x2139
1181C	Flag brute force, combinatorics, dp, implementation	1900	x2134
319A	Malek Dance Club combinatorics, math	1700	x2104
288B	Polo the Penguin and Houses combinatorics	1700	x2087
294C	Shaass and Lights combinatorics, number theory	1900	x2086
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x2049
596C	Wilbur and Points combinatorics, greedy, sortings	1700	x1989
603B	Moodular Arithmetic combinatorics, dfs and similar, dsu, math, number theory	2000	x1982
107B	Basketball Team combinatorics, dp, math, probabilities	1700	x1965
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x1934
272D	Dima and Two Sequences combinatorics, math, sortings	1800	x1902
630I	Parking Lot combinatorics, math	1900	x1854

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