Problemset - Codeforces

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Educational Codeforces Round 150 (Rated for Div. 2)
4 days

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Difficulty: —

math

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Problems

#	Name
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, probabilities		x299
1840G1	In Search of Truth (Easy Version) brute force, constructive algorithms, interactive, math, probabilities		x1030
1840C	Ski Resort combinatorics, math, two pointers		x13673
1840B	Binary Cafe bitmasks, combinatorics, math		x13066
1839A	The Good Array greedy, implementation, math		x12497
1838E	Count Supersequences combinatorics, dp, math		x628
1838C	No Prime Differences constructive algorithms, math, number theory		x7932
1838B	Minimize Permutation Subarrays constructive algorithms, math		x10932
1838A	Blackboard List constructive algorithms, math		x15117
1837A	Grasshopper on a Line constructive algorithms, math		x21492
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x4340
1833C	Vlad Building Beautiful Array greedy, math	800	x20741
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1326
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2109
1830E	Bully Sort data structures, math	3500	x93
1830C	Hyperregular Bracket Strings combinatorics, greedy, hashing, math, number theory, sortings	2400	x954
1830B	The BOSS Can Count Pairs brute force, math	2000	x3011
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x4159
1829G	Hits Different data structures, dp, implementation, math	1600	x5753
1829F	Forever Winter dfs and similar, graphs, math	1300	x10505
1828B	Permutation Swap math, number theory	900	x15185
1828A	Divisible Array constructive algorithms, math	800	x18740
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x13225
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x241
1826C	Dreaming of Freedom greedy, math, number theory	1300	x8946
1826B	Lunatic Never Content math, number theory	1100	x11304
1825B	LuoTianyi and the Table greedy, math	1000	x11418
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x1892
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x3183
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x471
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x920
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x2792
1823C	Strongly Composite greedy, math, number theory	1300	x8771
1823B	Sort with Step brute force, math, sortings	900	x12039
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x13385
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x1590
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x4424
1822E	Making Anti-Palindromes greedy, math, strings	1600	x6634
1822D	Super-Permutation constructive algorithms, math	1200	x11855
1822C	Bun Lover math	800	x18149
1822B	Karina and Array greedy, math, sortings	800	x19473
1821F	Timber combinatorics, dp, fft, math	2600	x505
1821D	Black Cells binary search, brute force, greedy, math	1900	x3612
1821C	Tear It Apart brute force, implementation, math, strings	1300	x10026
1821A	Matching combinatorics, math	800	x16208
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x10277
1819E	Roads in E City interactive, math, probabilities, trees	3200	x165
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1049
1817C	Similar Polynomials combinatorics, math	2400	x730
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x132
1815E	Bosco and Particle dp, math, number theory, strings	3100	x178
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x720
1815A	Ian and Array Sorting greedy, math	1300	x10671
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x622
1814B	Long Legs brute force, math	1700	x7443
1814A	Coins implementation, math	800	x20347
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1122
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x1350
1811E	Living Sequence binary search, dp, math, number theory	1500	x8376
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x5304
1811B	Conveyor Belts implementation, math	1000	x16567
1811A	Insert Digit greedy, math, strings	800	x24612
1810H	Last Number combinatorics, math	2900	x83
1810F	M-tree data structures, math, sortings, trees	2800	x413
1810D	Climbing the Tree binary search, math	1700	x5586
1810B	Candies constructive algorithms, math, number theory	800	x15227
1809G	Prediction combinatorics, dp, math	2800	x266
1809E	Two Tanks binary search, dp, implementation, math	2400	x610
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x9225
1809B	Points on Plane binary search, greedy, math	1000	x16145
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x276
1808B	Playing in a Casino math, sortings	1200	x10434
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x179
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x222
1806D	DSU Master combinatorics, dp, dsu, math	2500	x640
1806C	Sequence Master brute force, constructive algorithms, math	1600	x5791
1806A	Walking Master geometry, greedy, math	800	x18523
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x222
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x540
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x9583
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x9373
1804A	Lame King greedy, math	800	x16284
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x10975
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x400
1799G	Count Voting combinatorics, dp, math	2600	x502
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x947
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x8769
1799A	Recent Actions data structures, greedy, implementation, math	800	x10321
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x344
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x6908
1798C	Candy Store greedy, math, number theory	1700	x6413
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x867
1796F	Strange Triples brute force, math, number theory	2900	x115
1796C	Maximum Set binary search, math	1600	x7530
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1584
1795D	Triangle Coloring combinatorics, math	1600	x6777
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x2692
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x9704
1794B	Not Dividing constructive algorithms, greedy, math	900	x15027
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x4661

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