Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
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Problems

#	Name
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x479
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x945
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2412
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x2795
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6147
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x15503
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x21076
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1372
1954B	Make It Ugly implementation, math	1200	x13426
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x658
1952H	Palindrome implementation, strings		x313
1952D	Are You a Procrastinator? implementation		x3978
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2740
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3107
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x6913
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x10956
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x18992
1950C	Clock Conversion implementation, math	800	x32964
1950B	Upscaling implementation	800	x31318
1950A	Stair, Peak, or Neither? implementation	800	x40639
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers		x294
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2466
1948B	Array Fix brute force, dp, greedy, implementation	1100	x19821
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3791
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8608
1946A	Median of an Array greedy, implementation, sortings	800	x22701
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x586
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3088
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x505
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2290
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16163
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x169
1937B	Binary Path dp, greedy, implementation	1300	x12757
1937A	Shuffle Party implementation, math	800	x21058
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1032
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2340
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x363
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7126
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9426
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20067
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29392
1932E	Final Countdown implementation, math, number theory	1600	x6531
1932D	Card Game greedy, implementation	1400	x9612
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13279
1932A	Thorns and Coins dp, greedy, implementation	800	x26145
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2321
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x202
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3661
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2858
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1427
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x9682
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x22505
1926B	Vlad and Shapes geometry, implementation	800	x29154
1926A	Vlad and the Best of Five implementation	800	x40892
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2229
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x314
1923B	Monsters Attack! dp, greedy, implementation	1100	x15892
1923A	Moving Chips greedy, implementation	800	x22952
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5101
1922C	Closest Cities greedy, implementation, math	1300	x16633
1922A	Tricky Template constructive algorithms, implementation, strings	800	x25675
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1098
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3378
1921B	Arranging Cats greedy, implementation	800	x31716
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5027
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x757
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x757
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1524
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4186
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12320
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x21854
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x28498
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1634
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9247
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16520
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24377
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5325
1915D	Unnatural Language Processing greedy, implementation, strings	900	x27270
1915C	Can I Square? binary search, implementation	800	x36903
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x37962
1915A	Odd One Out bitmasks, implementation	800	x48757
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x17827
1914A	Problemsolving Log implementation, strings	800	x29401
1913A	Rating Increase implementation	800	x22107
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x757
1912A	Accumulator Apex data structures, implementation, sortings	1900	x1822
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x558
1910A	Username *special problem, implementation	1100	x1525
1909A	Distinct Buttons implementation, math	800	x15636
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1720
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x22935
1907A	Rook implementation	800	x33627
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3433
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x298
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x793
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x3723
1904A	Forked! brute force, implementation	900	x15469
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x873
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x3605
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6056

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