Problemset - Codeforces

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Educational Codeforces Round 169 (Rated for Div. 2)
16:30:33
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Problems

#	Name
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x14854
1616C	Representative Edges brute force, geometry, implementation, math	1500	x12147
1615C	Menorah brute force, graphs, greedy, math	1600	x8301
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15675
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10145
1612D	X-Magic Pair math, number theory	1600	x9038
1612C	Chat Ban binary search, math	1300	x16771
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x7175
1611D	Weights Assignment For Tree Edges constructive algorithms, trees	1500	x9753
1610C	Keshi Is Throwing a Party binary search, greedy	1600	x11249
1609D	Social Network dsu, graphs, greedy, implementation, trees	1600	x7232
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9650
1608C	Game Master data structures, dfs and similar, dp, graphs, greedy, two pointers	1700	x6573
1607E	Robot on the Board 1 implementation	1600	x9226
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16699
1606C	Banknotes greedy, number theory	1400	x14020
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16734
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13369
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16476
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14177
1600J	Robot Factory bitmasks, dfs and similar	1400	x3852
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8554
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x11016
1594D	The Number of Imposters constructive algorithms, dfs and similar, dp, dsu, graphs	1700	x7367
1593E	Gardener and Tree brute force, data structures, dfs and similar, greedy, implementation, trees	1600	x12136
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7827
1585C	Minimize Distance greedy	1300	x11906
1583C	Omkar and Determination data structures, dp	1700	x6883
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10396
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3617
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4702
1579E2	Array Optimization by Deque data structures, greedy	1700	x6571
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x15794
1579C	Ticks greedy, implementation	1500	x10483
1578H	Higher Order Functions implementation, strings	1700	x2011
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3727
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x16890
1573B	Swaps greedy, math, sortings	1400	x14396
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x334
1571B	Epic Novel *special problem, math	1300	x703
1569C	Jury Meeting combinatorics, math	1500	x11904
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12053
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7800
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6272
1562C	Rings constructive algorithms, math	1500	x13145
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5551
1561C	Deep Down Below binary search, greedy, sortings	1300	x14231
1560D	Make a Power of Two greedy, math, strings	1300	x18039
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13607
1558A	Charmed by the Game brute force, math	1300	x11014
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8528
1556B	Take Your Places! implementation	1300	x12607
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12184
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21430
1555B	Two Tables brute force	1300	x15932
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12666
1553D	Backspace dp, greedy, strings, two pointers	1500	x13592
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x14045
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x15298
1551D1	Domino (easy version) constructive algorithms, math	1700	x7001
1551C	Interesting Story greedy, sortings, strings	1500	x13143
1551B2	Wonderful Coloring - 2 binary search, constructive algorithms, data structures, greedy	1400	x15351
1550C	Manhattan Subarrays brute force, geometry, greedy, implementation	1700	x10084
1548A	Web of Lies brute force, graphs, greedy	1400	x16303
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x14265
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16429
1545A	AquaMoon and Strange Sort sortings	1500	x13795
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7538
1542C	Strange Function math, number theory	1600	x13994
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x22770
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x13848
1539D	PriceFixed binary search, greedy, implementation, sortings, two pointers	1600	x11519
1538F	Interesting Function binary search, dp, math, number theory	1500	x19007
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13440
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x28003
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x12736
1537D	Deleting Divisors games, math, number theory	1700	x12197
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x13936
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16356
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12705
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9110
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8620
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x14437
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13392
1526C2	Potions (Hard Version) data structures, greedy	1600	x22110
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x22044
1526B	I Hate 1111 dp, math, number theory	1400	x29963
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8697
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x21161
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x11387
1520E	Arranging The Sheep greedy, math	1400	x20918
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14995
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x16580
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13274
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11795
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18973
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11298
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x16950
1514C	Product 1 Modulo N greedy, number theory	1600	x14857
1513C	Add One dp, matrices	1600	x13754