Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
39:29:16
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Problems

#	Name
1902A	Binary Imbalance constructive algorithms	800	x21410
1901F	Landscaping binary search, geometry, two pointers	2900	x155
1901E	Compressed Tree dfs and similar, dp, graphs, greedy, sortings, trees	2200	x1592
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7205
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x12279
1901B	Chip and Ribbon greedy, math	1100	x15248
1901A	Line Trip greedy, math	800	x35151
1900F	Local Deletions binary search, data structures, implementation	2800	x295
1900E	Transitive Graph dfs and similar, dp, dsu, graphs, implementation	2100	x2144
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4369
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11846
1900B	Laura and Operations dp, math	900	x17908
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x30257
1899G	Unusual Entertainment data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers	1900	x3335
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x7938
1899E	Queue Sort greedy, implementation, sortings	1300	x15906
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13802
1899C	Yarik and Array dp, greedy, two pointers	1100	x22160
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x21565
1899A	Game with Integers games, math, number theory	800	x49451
1898F	Vova Escapes the Matrix brute force, dfs and similar, divide and conquer, shortest paths	2600	x828
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2353
1898D	Absolute Beauty greedy, math	1900	x5392
1898C	Colorful Grid constructive algorithms	1700	x5677
1898B	Milena and Admirer greedy, math	1500	x12286
1898A	Milica and String brute force, implementation, strings	800	x16222
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x107
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x94
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x347
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x752
1896E	Permutation Sorting data structures, sortings	2100	x2273
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5935
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x9907
1896B	AB Flipping greedy, strings, two pointers	900	x15258
1896A	Jagged Swaps sortings	800	x26266
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x198
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x784
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1597
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6185
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11482
1895B	Points and Minimum Distance greedy, math, sortings	800	x20622
1895A	Treasure Chest math	800	x24633
1894B	Two Out of Three constructive algorithms	1000	x16247
1894A	Secret Sport implementation, strings	800	x19147
1893E	Cacti Symphony combinatorics, dfs and similar, dp, graphs	3500	x199
1893D	Colorful Constructive constructive algorithms, data structures, greedy	2600	x938
1893C	Freedom of Choice brute force, greedy, implementation	2000	x2769
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x9100
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x12660
1891F	A Growing Tree data structures, dfs and similar, trees	2000	x3919
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x861
1891D	Suspicious logarithms binary search, brute force, math	1900	x4038
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x13908
1891B	Deja Vu brute force, math, sortings	1100	x18855
1891A	Sorting with Twos constructive algorithms, sortings	800	x19416
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x17709
1890A	Doremy's Paint 3 constructive algorithms	800	x28664
1889F	Doremy's Average Tree data structures, dp, greedy, trees	3500	x85
1889E	Doremy's Swapping Trees dfs and similar, graphs, trees	3500	x114
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x633
1889C2	Doremy's Drying Plan (Hard Version) data structures, dp	2600	x1037
1889C1	Doremy's Drying Plan (Easy Version) brute force, data structures, dp, greedy, sortings	2000	x3374
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x7547
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13488
1887F	Minimum Segments constructive algorithms	3400	x182
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x388
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x990
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1814
1887B	Time Travel binary search, graphs, shortest paths	1900	x3120
1886F	Diamond Theft data structures, greedy	3300	x192
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1530
1886D	Monocarp and the Set combinatorics, data structures, math	2100	x3659
1886C	Decreasing String implementation, strings	1600	x11936
1886B	Fear of the Dark binary search, geometry, math	1200	x16450
1886A	Sum of Three brute force, constructive algorithms, math	800	x26122
1885A	Deterministic Scheduling for Extended Reality over 5G and Beyond *special problem
1884E	Hard Design greedy, implementation, math	2800	x323
1884D	Counting Rhyme dp, math, number theory	2100	x3328
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x6263
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12900
1884A	Simple Design brute force, greedy, math	800	x17662
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x5558
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x11683
1883F	You Are So Beautiful data structures	1400	x9858
1883E	Look Back bitmasks, greedy	1700	x8385
1883D	In Love data structures, greedy	1500	x12012
1883C	Raspberries dp, math	1000	x29252
1883B	Chemistry strings	900	x34419
1883A	Morning math	800	x26126
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x301
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x1044
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5649
1882C	Card Game brute force, greedy	1500	x12663
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15705
1882A	Increasing Sequence greedy	800	x25603
1881G	Anya and the Mysterious String binary search, data structures	2000	x2448
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x7222
1881E	Block Sequence dp	1500	x15141
1881D	Divide and Equalize math, number theory	1300	x18142
1881C	Perfect Square brute force, implementation	1200	x17363