Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
46:03:26
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Problems

#	Name
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x29356
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x215
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1578
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3824
1928C	Physical Education Lesson brute force, math, number theory	1600	x7672
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x15614
1928A	Rectangle Cutting geometry, math	800	x21433
1927G	Paint Charges data structures, dp, greedy, math	2300	x1517
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3878
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12653
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18695
1927C	Choose the Different Ones! brute force, greedy, math	1000	x25947
1927B	Following the String constructive algorithms, greedy, strings	900	x30794
1927A	Make it White greedy, strings	800	x40195
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3052
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1529
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10369
1926D	Vlad and Division bitmasks, greedy	1300	x13930
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x23740
1926B	Vlad and Shapes geometry, implementation	800	x30221
1926A	Vlad and the Best of Five implementation	800	x42965
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3289
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18510
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27424
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x134
1924E	Paper Cutting Again combinatorics, probabilities	3100	x398
1924D	Balanced Subsequences combinatorics, dp, math	2700	x790
1924C	Fractal Origami geometry, math, matrices	2400	x1059
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2310
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12571
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x338
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3278
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6052
1923C	Find B constructive algorithms, greedy	1400	x13476
1923B	Monsters Attack! dp, greedy, implementation	1100	x16444
1923A	Moving Chips greedy, implementation	800	x23492
1922F	Replace on Segment dp, graph matchings	2500	x1182
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7160
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5285
1922C	Closest Cities greedy, implementation, math	1300	x17096
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19278
1922A	Tricky Template constructive algorithms, implementation, strings	800	x26050
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1143
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3504
1921E	Eat the Chip brute force, games, greedy, math	1600	x9032
1921D	Very Different Array data structures, greedy, sortings, two pointers	1100	x20245
1921C	Sending Messages greedy, math	900	x27611
1921B	Arranging Cats greedy, implementation	800	x32234
1921A	Square greedy, math	800	x40397
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x420
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x896
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2409
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5169
1920C	Partitioning the Array brute force, math, number theory	1600	x12037
1920B	Summation Game games, greedy, math, sortings	1100	x19491
1920A	Satisfying Constraints brute force, greedy, math	800	x26681
1919H	Tree Diameter interactive, trees	2000	x133
1919G	Tree LGM constructive algorithms, divide and conquer, games, trees	3500	x171
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x750
1919F1	Wine Factory (Easy Version) data structures, greedy	2300	x2046
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x786
1919D	01 Tree constructive algorithms, data structures, dsu, greedy, sortings, trees	2100	x3635
1919C	Grouping Increases data structures, dp, greedy	1400	x17086
1919B	Plus-Minus Split greedy	800	x28949
1919A	Wallet Exchange games, math	800	x31956
1918G	Permutation of Given constructive algorithms, math	2700	x430
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x793
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1596
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4342
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12776
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x22366
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x28962
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x908
1917E	Construct Matrix constructive algorithms, math	2500	x1282
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1678
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9529
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19765
1917A	Least Product constructive algorithms, math	800	x24370
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x503
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x585
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x134
1916F	Group Division constructive algorithms, dfs and similar, graphs, greedy	2900	x411
1916E	Happy Life in University data structures, dfs and similar, greedy, trees	2300	x2116
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7968
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16858
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23936
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24713
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5524
1915F	Greetings data structures, divide and conquer, sortings	1500	x11871
1915E	Romantic Glasses data structures, greedy, math	1300	x18905
1915D	Unnatural Language Processing greedy, implementation, strings	900	x28071
1915C	Can I Square? binary search, implementation	800	x38211
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x39085
1915A	Odd One Out bitmasks, implementation	800	x50790
1914G2	Light Bulbs (Hard Version) combinatorics, data structures, dfs and similar, dp, graphs, hashing	2300	x1240
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1699
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x3744
1914E2	Game with Marbles (Hard Version) games, greedy, sortings	1400	x11394
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x11286
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x18636