Problemset - Codeforces

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Codeforces Round 946 (Div. 3)
35:17:12
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combinatorics

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Problems

#	Name
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31184
1743A	Password brute force, combinatorics, implementation, math	800	x26165
1674B	Dictionary combinatorics, math	800	x25662
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21026
1821A	Matching combinatorics, math	800	x19384
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18377
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15827
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13266
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13133
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23941
1543B	Customising the Track combinatorics, greedy, math	900	x22686
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x22091
1582B	Luntik and Subsequences combinatorics, math	900	x18913
1777B	Emordnilap combinatorics, greedy, math	900	x16615
1166A	Silent Classroom combinatorics, greedy	900	x13973
1840C	Ski Resort combinatorics, math, two pointers	1000	x24753
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x22954
610A	Pasha and Stick combinatorics, math	1000	x22079
1293B	JOE is on TV! combinatorics, greedy, math	1000	x20836
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x19620
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x14448
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21682
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21547
630C	Lucky Numbers combinatorics, math	1100	x20454
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19524
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17543
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17051
1272C	Yet Another Broken Keyboard combinatorics, dp, implementation	1200	x25200
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22903
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19100
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x17080
459B	Pashmak and Flowers combinatorics, implementation, sortings	1300	x38571
478B	Random Teams combinatorics, constructive algorithms, greedy, math	1300	x35352
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29123
1328B	K-th Beautiful String binary search, brute force, combinatorics, implementation, math	1300	x28180
1433E	Two Round Dances combinatorics, math	1300	x18055
617B	Chocolate combinatorics	1300	x17352
251A	Points on Line binary search, combinatorics, two pointers	1300	x16791
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16093
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15965
1326C	Permutation Partitions combinatorics, greedy, math	1300	x15292
1879C	Make it Alternating combinatorics, dp, greedy	1300	x15018
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12515
1007A	Reorder the Array combinatorics, data structures, math, sortings, two pointers	1300	x11992
1178C	Tiles combinatorics, greedy, math	1300	x11434
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x10880
621B	Wet Shark and Bishops combinatorics, implementation	1300	x10794
1096B	Substring Removal combinatorics, math, strings	1300	x10344
844B	Rectangles combinatorics, math	1300	x6997
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6956
630F	Selection of Personnel combinatorics, math	1300	x6583
171B	Star *special problem, combinatorics	1300	x3948
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x20921
1475C	Ball in Berland combinatorics, graphs, math	1400	x20024
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13804
1215B	The Number of Products combinatorics, dp, implementation	1400	x12109
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x11807
131C	The World is a Theatre combinatorics, math	1400	x10685
1284B	New Year and Ascent Sequence binary search, combinatorics, data structures, dp, implementation, sortings	1400	x10593
152C	Pocket Book combinatorics	1400	x10271
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9527
978E	Bus Video System combinatorics, math	1400	x9251
1762C	Binary Strings are Fun combinatorics, math	1400	x8877
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7237
630H	Benches combinatorics, math	1400	x4748
124B	Permutations brute force, combinatorics, implementation	1400	x3762
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x14997
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14565
1462E1	Close Tuples (easy version) binary search, combinatorics, math, sortings, two pointers	1500	x13226
1569C	Jury Meeting combinatorics, math	1500	x11670
584B	Kolya and Tanya combinatorics	1500	x11606
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11279
1236B	Alice and the List of Presents combinatorics, math	1500	x10678
1436C	Binary Search binary search, combinatorics	1500	x10544
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10154
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9931
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9451
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x8730
553A	Kyoya and Colored Balls combinatorics, dp, math	1500	x8387
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8107
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7772
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x7559
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7550
1081C	Colorful Bricks combinatorics, dp, math	1500	x7056
608B	Hamming Distance Sum combinatorics, strings	1500	x6489
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6285
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5573
204A	Little Elephant and Interval binary search, combinatorics, dp	1500	x5543
374B	Inna and Nine combinatorics, greedy	1500	x3234
288B	Polo the Penguin and Houses combinatorics	1500	x2848
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x13643
1475E	Advertising Agency combinatorics, math, sortings	1600	x12922
1288C	Two Arrays combinatorics, dp	1600	x12311
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11859
322B	Ciel and Flowers combinatorics, math	1600	x11513
1907E	Good Triples brute force, combinatorics, number theory	1600	x8868
1795D	Triangle Coloring combinatorics, math	1600	x8504
1452D	Radio Towers combinatorics, dp, math	1600	x7774
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x7740
1284C	New Year and Permutation combinatorics, math	1600	x7717

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