Problemset - Codeforces

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Educational Codeforces Round 189 (Rated for Div. 2)
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Problems

#	Name
2208C	Stamina and Tasks dp, greedy, math	1300	x10598
2207C	Where's My Water? data structures, divide and conquer, dp, math	1600	x5145
2195E	Idiot First Search dfs and similar, dp, trees	1500	x8348
2194C	Secret message bitmasks, brute force, dp, math, number theory	1300	x10715
2193F	Pizza Delivery dp, greedy	1600	x8305
2193E	Product Queries dp, math, number theory, shortest paths	1300	x15028
2190B1	Sub-RBS (Easy Version) combinatorics, constructive algorithms, dp, greedy, strings, two pointers	1400	x10520
2184D	Unfair Game combinatorics, dp, math	1600	x9356
2182D	Christmas Tree Decoration combinatorics, dp, greedy, math	1600	x8867
2171F	Rae Taylor and Trees (hard version) binary search, constructive algorithms, data structures, dp, dsu, greedy, implementation, trees	1600	x7049
2171D	Rae Taylor and Trees (easy version) binary search, data structures, dp, dsu, greedy, implementation, trees	1400	x11441
2169C	Range Operation dp, greedy, math, two pointers	1300	x12541
2167G	Mukhammadali and the Smooth Array data structures, dp	1600	x10841
2167F	Tree, TREE!!! dfs and similar, dp, math, trees	1600	x7064
2163C	Monopati brute force, combinatorics, dp, math, two pointers	1500	x8905
2158C	Annoying Game dp, games, greedy	1400	x10930
2147C	Rabbits constructive algorithms, dp, greedy, implementation	1500	x9669
2144C	Non-Descending Arrays combinatorics, dp, math	1300	x14923
2132D	From 1 to Infinity binary search, dp, implementation, math	1600	x8778
2129B	Stay or Mirror brute force, data structures, dp, greedy, sortings	1600	x13176
2129A	Double Perspective constructive algorithms, dp, dsu, graphs, greedy, sortings	1300	x16565
2128D	Sum of LDS brute force, combinatorics, dp, greedy, math	1600	x12204
2125D	Segments Covering dp, math, probabilities	1600	x9225
2121E	Sponsor of Your Problems dp, greedy, implementation, strings	1500	x14607
2115A	Gellyfish and Flaming Peony constructive algorithms, dp, math, number theory	1500	x14819
2114E	Kirei Attacks the Estate dfs and similar, dp, greedy, trees	1400	x13940
2108C	Neo's Escape binary search, brute force, data structures, dp, dsu, graphs, greedy, implementation	1500	x14574
2107C	Maximum Subarray Sum binary search, constructive algorithms, dp, implementation, math	1500	x12013
2106D	Flower Boy binary search, dp, greedy, two pointers	1500	x12203
2086C	Disappearing Permutation dfs and similar, dp, dsu, graphs, greedy, implementation	1300	x16050
2085C	Serval and The Formula bitmasks, constructive algorithms, dp, greedy	1600	x13472
2072E	Do You Love Your Hero and His Two-Hit Multi-Target Attacks? binary search, brute force, constructive algorithms, dp, geometry, greedy, math	1500	x12209
2070D	Tree Jumps dfs and similar, dp, trees	1600	x11000
2069C	Beautiful Sequence combinatorics, dp, greedy, two pointers	1500	x14693
2064C	Remove the Ends brute force, constructive algorithms, dp, greedy	1300	x17678
2063C	Remove Exactly Two brute force, data structures, dfs and similar, dp, graphs, greedy, sortings, trees	1600	x14536
2061C	Kevin and Puzzle 2-sat, combinatorics, dp	1600	x9878
2053C	Bewitching Stargazer bitmasks, divide and conquer, dp, math	1500	x12296
2050E	Three Strings dp, implementation, strings	1500	x14412
2043C	Sums on Segments binary search, brute force, data structures, dp, greedy, math	1600	x11154
2038L	Bridge Renovation brute force, dp, greedy, math, two pointers	1400	x7962
2037E	Kachina's Favorite Binary String dp, greedy, interactive, two pointers	1600	x7351
2033D	Kousuke's Assignment data structures, dp, dsu, greedy, math	1300	x18147
2033C	Sakurako's Field Trip dp, greedy, two pointers	1400	x17756
2028C	Alice's Adventures in Cutting Cake binary search, dp, greedy, two pointers	1600	x9924
2027C	Add Zeros brute force, data structures, dfs and similar, dp, graphs, greedy	1500	x13613
2008E	Alternating String brute force, data structures, dp, greedy, implementation, strings	1500	x13137
1999E	Triple Operations dp, implementation, math	1300	x23539
1997D	Maximize the Root binary search, dfs and similar, dp, greedy, trees	1500	x15834
1994C	Hungry Games binary search, dp, two pointers	1600	x13485
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x17933
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x20105
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x12387
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x11899
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x21039
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x13680
1945D	Seraphim the Owl dp, greedy	1300	x17128
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x11885
1937B	Binary Path dp, greedy, implementation	1300	x17287
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x32915
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x14801
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x16691
1919C	Grouping Increases data structures, dp, greedy	1400	x28399
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x14980
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x12999
1881E	Block Sequence dp	1500	x23425
1879C	Make it Alternating combinatorics, dp, greedy	1300	x26911
1875D	Jellyfish and Mex dp	1600	x11359
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x21216
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x13087
1860C	Game on Permutation data structures, dp, games, greedy	1400	x15528
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x13002
1856C	To Become Max binary search, brute force, data structures, dp	1600	x18191
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x13250
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x14733
1845C	Strong Password binary search, dp, greedy, strings	1400	x16747
1844C	Particles dp, greedy, implementation, math	1300	x17828
1842C	Tenzing and Balls dp	1500	x16424
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x20210
1829G	Hits Different data structures, dp, implementation, math	1600	x15028
1811E	Living Sequence binary search, dp, math, number theory	1500	x14376
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x9918
1787C	Remove the Bracket dp, greedy, math	1600	x8259
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x13261
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x21228
1769C2	Подкрутка II *special problem, dp	1300	x1076
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x11190
1766C	Hamiltonian Wall dp, implementation	1300	x14968
1759E	The Humanoid brute force, dp, sortings	1500	x12486
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x11593
1753A1	Make Nonzero Sum (easy version) constructive algorithms, dp, greedy	1300	x16432
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x12954
1741E	Sending a Sequence Over the Network dp	1600	x17632
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x10072
1738C	Even Number Addicts dp, games, greedy, math	1500	x12745
1722E	Counting Rectangles brute force, data structures, dp, implementation	1600	x13307
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x10300
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x16125
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x12703
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x29801

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