Problemset - Codeforces

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Codeforces Round 943 (Div. 3)
01:00:08
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combinatorics

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Problems

#	Name
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31006
1743A	Password brute force, combinatorics, implementation, math	800	x26056
1674B	Dictionary combinatorics, math	800	x25586
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21008
1821A	Matching combinatorics, math	800	x19339
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18351
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15784
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13241
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13100
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23659
1543B	Customising the Track combinatorics, greedy, math	900	x22642
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x22011
1582B	Luntik and Subsequences combinatorics, math	900	x18762
1777B	Emordnilap combinatorics, greedy, math	900	x16564
1166A	Silent Classroom combinatorics, greedy	900	x13954
1840C	Ski Resort combinatorics, math, two pointers	1000	x24499
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x22891
610A	Pasha and Stick combinatorics, math	1000	x21988
1293B	JOE is on TV! combinatorics, greedy, math	1000	x20778
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x19582
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x14399
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21592
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21461
630C	Lucky Numbers combinatorics, math	1100	x20374
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19286
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17415
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17014
1272C	Yet Another Broken Keyboard combinatorics, dp, implementation	1200	x25053
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22697
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x18935
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x16993
459B	Pashmak and Flowers combinatorics, implementation, sortings	1300	x38415
478B	Random Teams combinatorics, constructive algorithms, greedy, math	1300	x35215
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x28988
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x28061
1433E	Two Round Dances combinatorics, math	1300	x18010
617B	Chocolate combinatorics	1300	x17302
251A	Points on Line binary search, combinatorics, two pointers	1300	x16564
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x15971
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15697
1326C	Permutation Partitions combinatorics, greedy, math	1300	x15225
1879C	Make it Alternating combinatorics, dp, greedy	1300	x14853
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12480
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x11981
1178C	Tiles combinatorics, greedy, math	1300	x11294
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x10849
621B	Wet Shark and Bishops combinatorics, implementation	1300	x10780
1096B	Substring Removal combinatorics, math, strings	1300	x10332
844B	Rectangles combinatorics, math	1300	x6984
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6953
630F	Selection of Personnel combinatorics, math	1300	x6553
171B	Star *special problem, combinatorics	1300	x3936
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x20787
1475C	Ball in Berland combinatorics, graphs, math	1400	x19926
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13708
1215B	The Number of Products combinatorics, dp, implementation	1400	x12060
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x11707
131C	The World is a Theatre combinatorics, math	1400	x10624
1284B	New Year and Ascent Sequence binary search, combinatorics, data structures, dp, implementation, sortings	1400	x10584
152C	Pocket Book combinatorics	1400	x10249
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9516
978E	Bus Video System combinatorics, math	1400	x9217
1762C	Binary Strings are Fun combinatorics, math	1400	x8834
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7172
630H	Benches combinatorics, math	1400	x4737
124B	Permutations brute force, combinatorics, implementation	1400	x3747
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x14952
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14537
1462E1	Close Tuples (easy version) binary search, combinatorics, math, sortings, two pointers	1500	x13178
1569C	Jury Meeting combinatorics, math	1500	x11644
584B	Kolya and Tanya combinatorics	1500	x11576
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11158
1236B	Alice and the List of Presents combinatorics, math	1500	x10655
1436C	Binary Search binary search, combinatorics	1500	x10520
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10117
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9903
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9392
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x8689
553A	Kyoya and Colored Balls combinatorics, dp, math	1500	x8370
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8051
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7659
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x7513
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7465
1081C	Colorful Bricks combinatorics, dp, math	1500	x7041
608B	Hamming Distance Sum combinatorics, strings	1500	x6471
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6274
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5547
204A	Little Elephant and Interval binary search, combinatorics, dp	1500	x5522
374B	Inna and Nine combinatorics, greedy	1500	x3231
288B	Polo the Penguin and Houses combinatorics	1500	x2845
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x13574
1475E	Advertising Agency combinatorics, math, sortings	1600	x12851
1288C	Two Arrays combinatorics, dp	1600	x12267
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11827
322B	Ciel and Flowers combinatorics, math	1600	x11486
1907E	Good Triples brute force, combinatorics, number theory	1600	x8733
1795D	Triangle Coloring combinatorics, math	1600	x8440
1452D	Radio Towers combinatorics, dp, math	1600	x7747
1284C	New Year and Permutation combinatorics, math	1600	x7705
888D	Almost Identity Permutations combinatorics, dp, math	1600	x7600

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