Problemset - Codeforces

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Codeforces Round 1134 (Div. 4)
5 days
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Problems

#	Name
1628D1	Game on Sum (Easy Version) combinatorics, dp, games, math	2100	x3903
1628C	Grid Xor constructive algorithms, greedy, implementation, interactive, math	2300	x3741
1628B	Peculiar Movie Preferences greedy, strings	1700	x12953
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x17353
1627F	Not Splitting geometry, graphs, greedy, implementation, shortest paths	2700	x702
1627E	Not Escaping data structures, dp, implementation, shortest paths, two pointers	2200	x2960
1627D	Not Adding brute force, dp, math, number theory	1900	x9742
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x16673
1627B	Not Sitting games, greedy, sortings	1300	x17798
1627A	Not Shading constructive algorithms, implementation	800	x25070
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x947
1626E	Black and White Tree dfs and similar, greedy, trees	2400	x1989
1626D	Martial Arts Tournament binary search, brute force, greedy, math	2100	x4478
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x12118
1626B	Minor Reduction greedy, strings	1100	x24236
1626A	Equidistant Letters constructive algorithms, sortings	800	x31254
1625E2	Cats on the Upgrade (hard version) binary search, data structures, dfs and similar, graphs, trees	2800	x757
1625E1	Cats on the Upgrade (easy version) brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees	2500	x1220
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x2407
1625C	Road Optimization dp	1700	x14142
1625B	Elementary Particles brute force, greedy, sortings	1100	x17025
1625A	Ancient Civilization bitmasks, greedy, math	800	x18474
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x8115
1624F	Interacdive Problem binary search, constructive algorithms, interactive	2000	x3965
1624E	Masha-forgetful brute force, constructive algorithms, dp, hashing, implementation, strings	2000	x4729
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x19656
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x27402
1624B	Make AP implementation, math	900	x58613
1624A	Plus One on the Subset math	800	x61939
1623E	Middle Duplication data structures, dfs and similar, greedy, strings, trees	2500	x1382
1623D	Robot Cleaner Revisit implementation, math, probabilities	2300	x1522
1623C	Balanced Stone Heaps binary search, greedy	1600	x14896
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x14816
1623A	Robot Cleaner brute force, implementation, math	800	x20903
1622F	Quadratic Set constructive algorithms, hashing, math, number theory	2900	x1003
1622E	Math Test bitmasks, brute force, greedy	2200	x2340
1622D	Shuffle combinatorics, math, two pointers	2000	x5068
1622C	Set or Decrease binary search, brute force, greedy, sortings	1600	x16201
1622B	Berland Music data structures, greedy, math, sortings	1000	x22611
1622A	Construct a Rectangle geometry, math	800	x32543
1621I	Two Sequences data structures, hashing, string suffix structures	3500	x154
1621H	Trains and Airplanes dfs and similar, graphs, shortest paths, trees	3500	x324
1621G	Weighted Increasing Subsequences data structures, dp, math	3200	x928
1621F	Strange Instructions data structures, greedy, implementation	2700	x669
1621E	New School binary search, data structures, dp, greedy, implementation, sortings	2300	x1973
1621D	The Winter Hike constructive algorithms, greedy, math	2100	x4475
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x7606
1621B	Integers Shop data structures, greedy, implementation	1500	x14783
1621A	Stable Arrangement of Rooks constructive algorithms	800	x24913
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x1238
1620F	Bipartite Array dp, greedy	2800	x845
1620E	Replace the Numbers constructive algorithms, data structures, dsu, implementation	1900	x10314
1620D	Exact Change brute force, constructive algorithms, greedy	2000	x4942
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x7406
1620B	Triangles on a Rectangle geometry, greedy, math	1000	x35166
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x23542
1619H	Permutation and Queries brute force, data structures, divide and conquer, two pointers	2400	x1573
1619G	Unusual Minesweeper binary search, dfs and similar, dsu, greedy, sortings	2000	x2842
1619F	Let's Play the Hat? brute force, constructive algorithms, greedy, math	2000	x2413
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x10482
1619D	New Year's Problem binary search, greedy, sortings	1800	x8869
1619C	Wrong Addition implementation	1200	x23173
1619B	Squares and Cubes implementation, math	800	x33646
1619A	Square String? implementation, strings	800	x64902
1618G	Trader Problem data structures, dsu, greedy, sortings	2200	x2057
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4861
1618E	Singers' Tour constructive algorithms, math	1700	x7907
1618D	Array and Operations dp, greedy, math	1300	x21320
1618C	Paint the Array math	1100	x35967
1618B	Missing Bigram implementation	800	x24064
1618A	Polycarp and Sums of Subsequences math, sortings	800	x35036
1617E	Christmas Chocolates dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees	2700	x1092
1617D2	Too Many Impostors (hard version) constructive algorithms, implementation, interactive, math	2400	x2144
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x5296
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x16235
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x27766
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x17142
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x1431
1616G	Just Add an Edge dfs and similar, dp, graphs	3500	x475
1616F	Tricolor Triangles brute force, graphs, math, matrices	2900	x794
1616E	Lexicographically Small Enough brute force, data structures, greedy, strings	2200	x2798
1616D	Keep the Average High dp, greedy, math	2000	x5801
1616C	Representative Edges brute force, geometry, implementation, math	1500	x13373
1616B	Mirror in the String greedy, strings	1100	x20887
1616A	Integer Diversity implementation	800	x24150
1615H	Reindeer Games binary search, constructive algorithms, data structures, divide and conquer, flows, graphs, shortest paths	3000	x492
1615G	Maximum Adjacent Pairs constructive algorithms, graph matchings	3300	x179
1615F	LEGOndary Grandmaster combinatorics, dp, math	2800	x1225
1615E	Purple Crayon data structures, dfs and similar, games, graphs, greedy, math, sortings, trees	2400	x1785
1615D	X(or)-mas Tree bitmasks, dfs and similar, dsu, graphs, trees	2200	x2235
1615C	Menorah brute force, graphs, greedy, math	1600	x9406
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x18377
1615A	Closing The Gap greedy, math	800	x21770
1614E	Divan and a Cottage binary search, data structures	2600	x1013
1614D2	Divan and Kostomuksha (hard version) dp, number theory	2300	x2907
1614D1	Divan and Kostomuksha (easy version) dp, number theory	2100	x4655
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x11558
1614B	Divan and a New Project constructive algorithms, sortings	1000	x32662
1614A	Divan and a Store brute force, constructive algorithms, greedy	800	x24838
1613F	Tree Coloring combinatorics, divide and conquer, fft	2600	x933

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