Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
3 days
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math

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Problems

#	Name
1857E	Power of Points math, sortings	1500	x11601
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11587
1307C	Cow and Message brute force, dp, math, strings	1500	x11560
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11351
702B	Powers of Two brute force, data structures, implementation, math	1500	x11333
1141C	Polycarp Restores Permutation math	1500	x11268
1133D	Zero Quantity Maximization hashing, math, number theory	1500	x11008
1461C	Random Events dp, math, probabilities	1500	x10874
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x10717
1236B	Alice and the List of Presents combinatorics, math	1500	x10688
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10640
1738C	Even Number Addicts dp, games, greedy, math	1500	x10630
1898B	Milena and Admirer greedy, math	1500	x10606
1971E	Find the Car binary search, math, sortings	1500	x10365
1744E1	Divisible Numbers (easy version) brute force, math, number theory	1500	x10298
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10273
1105C	Ayoub and Lost Array combinatorics, dp, math	1500	x10168
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x9976
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9952
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9873
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x9778
891A	Pride brute force, dp, greedy, math, number theory	1500	x9659
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9471
1051C	Vasya and Multisets brute force, dp, greedy, implementation, math	1500	x9153
282C	XOR and OR constructive algorithms, implementation, math	1500	x9142
742B	Arpa’s obvious problem and Mehrdad’s terrible solution brute force, math, number theory	1500	x9071
1482B	Restore Modulo implementation, math	1500	x9062
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x8959
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8857
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8655
1062B	Math greedy, math, number theory	1500	x8451
978D	Almost Arithmetic Progression brute force, implementation, math	1500	x8417
553A	Kyoya and Colored Balls combinatorics, dp, math	1500	x8393
997A	Convert to Ones brute force, greedy, implementation, math	1500	x8174
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8136
1010A	Fly binary search, math	1500	x7999
468A	24 Game constructive algorithms, greedy, math	1500	x7891
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7782
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7247
557B	Pasha and Tea constructive algorithms, implementation, math, sortings	1500	x7086
1081C	Colorful Bricks combinatorics, dp, math	1500	x7059
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x6884
908C	New Year and Curling brute force, geometry, implementation, math	1500	x6674
1119C	Ramesses and Corner Inversion constructive algorithms, greedy, implementation, math	1500	x6610
166C	Median greedy, math, sortings	1500	x6364
609C	Load Balancing implementation, math	1500	x6340
1012A	Photo of The Sky brute force, implementation, math, sortings	1500	x6159
659D	Bicycle Race geometry, implementation, math	1500	x6153
415B	Mashmokh and Tokens binary search, greedy, implementation, math	1500	x6127
864D	Make a Permutation! greedy, implementation, math	1500	x5965
864C	Bus greedy, implementation, math	1500	x5834
1725G	Garage binary search, geometry, math	1500	x5635
1737C	Ela and Crickets constructive algorithms, games, implementation, math	1500	x5583
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5575
676B	Pyramid of Glasses implementation, math, math	1500	x5463
1765K	Torus Path greedy, math	1500	x5411
354A	Vasya and Robot brute force, greedy, math	1500	x5402
1776L	Controllers binary search, math	1500	x5293
148B	Escape implementation, math	1500	x5290
149C	Division into Teams greedy, math, sortings	1500	x5270
87A	Trains implementation, math	1500	x5193
630K	Indivisibility math, number theory	1500	x5055
710C	Magic Odd Square constructive algorithms, math	1500	x4994
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x4993
569A	Music implementation, math	1500	x4744
809A	Do you want a date? implementation, math, sortings	1500	x4663
884C	Bertown Subway dfs and similar, greedy, math	1500	x4623
520C	DNA Alignment math, strings	1500	x4091
1250L	Divide The Students binary search, greedy, math	1500	x4036
724B	Batch Sort brute force, greedy, implementation, math	1500	x3981
1250H	Happy Birthday math	1500	x3980
566F	Clique in the Divisibility Graph dp, math, number theory	1500	x3532
404B	Marathon implementation, math	1500	x2897
417A	Elimination dp, implementation, math	1500	x2884
400C	Inna and Huge Candy Matrix implementation, math	1500	x2874
1089G	Guest Student math	1500	x2855
362A	Two Semiknights Meet greedy, math	1500	x2632
49B	Sum math	1500	x2395
100I	Rotation *special problem, geometry, math	1500	x340
1398C	Good Subarrays data structures, dp, math	1600	x24356
1B	Spreadsheet implementation, math	1600	x21777
1358C	Celex Update math	1600	x17056
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x16523
1458A	Row GCD math, number theory	1600	x16151
1334C	Circle of Monsters brute force, constructive algorithms, greedy, math	1600	x16148
1349A	Orac and LCM data structures, math, number theory	1600	x16034
1165D	Almost All Divisors math, number theory	1600	x15278
1344A	Hilbert's Hotel math, number theory, sortings	1600	x15251
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14646
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x13708
1342C	Yet Another Counting Problem math, number theory	1600	x13655
1542C	Strange Function math, number theory	1600	x13589
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13155
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13108
1475E	Advertising Agency combinatorics, math, sortings	1600	x12955
735D	Taxes math, number theory	1600	x12817
348A	Mafia binary search, math, sortings	1600	x12676
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12300
1753B	Factorial Divisibility math, number theory	1600	x12125
1920C	Partitioning the Array brute force, math, number theory	1600	x11980