Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
3 days
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Problems

#	Name
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3721
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3732
615D	Multipliers math, number theory	2000	x3805
1696E	Placing Jinas combinatorics, math	2000	x3842
1622D	Shuffle combinatorics, math, two pointers	2000	x3875
1872G	Replace With Product brute force, greedy, math	2000	x3998
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4037
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x4177
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4183
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x4201
792C	Divide by Three dp, greedy, math, number theory	2000	x4212
1634D	Finding Zero constructive algorithms, interactive, math	2000	x4234
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4406
1632D	New Year Concert binary search, data structures, greedy, math, number theory, two pointers	2000	x4469
475D	CGCDSSQ brute force, data structures, math	2000	x4481
1830B	The BOSS Can Count Pairs brute force, math	2000	x4602
466B	Wonder Room brute force, math	2000	x4605
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4622
451D	Count Good Substrings math	2000	x4639
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4702
1616D	Keep the Average High dp, greedy, math	2000	x4704
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4710
359D	Pair of Numbers binary search, brute force, data structures, math, two pointers	2000	x4838
1716D	Chip Move brute force, dp, math	2000	x4995
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5130
1268B	Domino for Young dp, greedy, math	2000	x5620
1359E	Modular Stability combinatorics, math, number theory	2000	x5733
1354C2	Not So Simple Polygon Embedding binary search, brute force, geometry, math	2000	x5814
1416B	Make Them Equal constructive algorithms, greedy, math	2000	x5906
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6168
1244C	The Football Season brute force, math, number theory	2000	x7427
1349B	Orac and Medians constructive algorithms, greedy, math	2000	x7724
1311D	Three Integers brute force, math	2000	x8651
1366D	Two Divisors constructive algorithms, math, number theory	2000	x9926
2B	The least round way dp, math	2000	x10234
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x76
72F	Oil *special problem, greedy, math	1900	x116
1488C	Two Policemen *special problem, binary search, brute force, math	1900	x399
195D	Analyzing Polyline geometry, math, sortings	1900	x1000
336B	Vasily the Bear and Fly math	1900	x1176
1912D	Divisibility Test math	1900	x1315
261B	Maxim and Restaurant dp, math, probabilities	1900	x1363
232B	Table bitmasks, combinatorics, dp, math	1900	x1387
126A	Hot Bath binary search, brute force, math	1900	x1402
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1481
847I	Noise Level dfs and similar, implementation, math	1900	x1504
223C	Partial Sums combinatorics, math, number theory	1900	x1512
257D	Sum greedy, math	1900	x1544
229C	Triangles combinatorics, graphs, math	1900	x1592
819B	Mister B and PR Shifts data structures, implementation, math	1900	x1620
362C	Insertion Sort data structures, dp, implementation, math	1900	x1653
746E	Numbers Exchange greedy, implementation, math	1900	x1709
1055C	Lucky Days math, number theory	1900	x1843
356B	Xenia and Hamming implementation, math	1900	x1888
1089F	Fractions math	1900	x1898
134B	Pairs of Numbers brute force, dfs and similar, math, number theory	1900	x1917
490D	Chocolate brute force, dfs and similar, math, meet-in-the-middle, number theory	1900	x2070
488B	Candy Boxes brute force, constructive algorithms, math	1900	x2079
553B	Kyoya and Permutation binary search, combinatorics, constructive algorithms, greedy, implementation, math	1900	x2094
353B	Two Heaps combinatorics, constructive algorithms, greedy, implementation, math, sortings	1900	x2175
568B	Symmetric and Transitive combinatorics, dp, math	1900	x2219
630E	A rectangle math	1900	x2256
57C	Array combinatorics, math	1900	x2329
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x2434
935D	Fafa and Ancient Alphabet math, probabilities	1900	x2518
599D	Spongebob and Squares brute force, math	1900	x2531
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2536
1043E	Train Hard, Win Easy constructive algorithms, greedy, math, sortings	1900	x2688
731F	Video Cards brute force, data structures, implementation, math, number theory	1900	x2756
359C	Prime Number math, number theory	1900	x2939
1277D	Let's Play the Words? data structures, hashing, implementation, math	1900	x2963
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3008
959D	Mahmoud and Ehab and another array construction task constructive algorithms, greedy, math, number theory	1900	x3048
700A	As Fast As Possible binary search, math	1900	x3143
1673D	Lost Arithmetic Progression combinatorics, math, number theory	1900	x3197
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3197
1969D	Shop Game data structures, greedy, math, sortings	1900	x3219
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3220
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3231
702D	Road to Post Office math	1900	x3249
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3309
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3350
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3368
1361B	Johnny and Grandmaster greedy, implementation, math, sortings	1900	x3390
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3460
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3465
1163C2	Power Transmission (Hard Edition) data structures, geometry, implementation, math	1900	x3530
1060D	Social Circles greedy, math	1900	x3566
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3594
1157D	N Problems During K Days constructive algorithms, greedy, math	1900	x3612
1585D	Yet Another Sorting Problem data structures, math	1900	x3631
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3654
1220D	Alex and Julian bitmasks, math, number theory	1900	x3689
535C	Tavas and Karafs binary search, greedy, math	1900	x3705
1891D	Suspicious logarithms binary search, brute force, math	1900	x3711
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3718
1029D	Concatenated Multiples implementation, math	1900	x3752
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3757
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x3879
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3929