Problemset - Codeforces

Problems

#	Name
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10599
1580A	Portal brute force, data structures, dp, greedy, implementation	1700	x3698
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4826
1579E2	Array Optimization by Deque data structures, greedy	1700	x6714
1579D	Productive Meeting constructive algorithms, graphs, greedy	1400	x16193
1579C	Ticks greedy, implementation	1500	x10631
1578H	Higher Order Functions implementation, strings	1700	x2038
1575J	Jeopardy of Dropped Balls binary search, brute force, dsu, implementation	1500	x3847
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2602
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x17264
1573B	Swaps greedy, math, sortings	1400	x14658
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x9128
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x340
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x335
1571C	Rhyme *special problem, implementation	1800	x380
1571B	Epic Novel *special problem, math	1300	x721
1569D	Inconvenient Pairs binary search, data structures, implementation, sortings, two pointers	1900	x4403
1569C	Jury Meeting combinatorics, math	1500	x12114
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12239
1566D2	Seating Arrangements (hard version) data structures, greedy, implementation, sortings, two pointers	1600	x7893
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6373
1562C	Rings constructive algorithms, math	1500	x13377
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5655
1561C	Deep Down Below binary search, greedy, sortings	1300	x14970
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6185
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x8103
1560D	Make a Power of Two greedy, math, strings	1300	x18286
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13986
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4832
1558A	Charmed by the Game brute force, math	1300	x11124
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8661
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x7058
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5824
1556B	Take Your Places! implementation	1300	x12744
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12530
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21972
1555B	Two Tables brute force	1300	x16160
1554D	Diane constructive algorithms, greedy, strings	1800	x9557
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8976
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12877
1553D	Backspace dp, greedy, strings, two pointers	1500	x13846
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x14231
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x7088
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5951
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x15549
1551D1	Domino (easy version) constructive algorithms, math	1700	x7136
1551C	Interesting Story greedy, sortings, strings	1500	x13401
1551B2	Wonderful Coloring - 2 binary search, constructive algorithms, data structures, greedy	1400	x15602
1550C	Manhattan Subarrays brute force, geometry, greedy, implementation	1700	x10240
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9991
1548A	Web of Lies brute force, graphs, greedy	1400	x16533
1547F	Array Stabilization (GCD version) binary search, brute force, data structures, divide and conquer, number theory, two pointers	1900	x5918
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x14583
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16819
1545B	AquaMoon and Chess combinatorics, math	1900	x6007
1545A	AquaMoon and Strange Sort sortings	1500	x13996
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7645
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5317
1542C	Strange Function math, number theory	1600	x14347
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x23372
1540A	Great Graphs constructive algorithms, graphs, greedy, shortest paths, sortings	1400	x14015
1539D	PriceFixed binary search, greedy, implementation, sortings, two pointers	1600	x11728
1538F	Interesting Function binary search, dp, math, number theory	1500	x19459
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13735
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x28965
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x13154
1537D	Deleting Divisors games, math, number theory	1700	x12512
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x14313
1535D	Playoff Tournament data structures, dfs and similar, dp, implementation, trees	1800	x7804
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16600
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x6106
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12881
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9287
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8767
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x14994
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13654
1527B2	Palindrome Game (hard version) constructive algorithms, games	1900	x7988
1526C2	Potions (Hard Version) data structures, greedy	1600	x23122
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x22837
1526B	I Hate 1111 dp, math, number theory	1400	x31068
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9869
1523C	Compression and Expansion brute force, data structures, greedy, implementation, trees	1600	x8809
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x21483
1520F1	Guess the K-th Zero (Easy version) binary search, interactive	1600	x11929
1520E	Arranging The Sheep greedy, math	1400	x21753
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x15428
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x17141
1517D	Explorer Space dp, graphs, shortest paths	1800	x7781
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13421
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12031
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19687
1515D	Phoenix and Socks greedy, sortings, two pointers	1500	x11452
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x17264
1514C	Product 1 Modulo N greedy, number theory	1600	x15368
1513C	Add One dp, matrices	1600	x14177
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14961
1512G	Short Task brute force, dp, math, number theory	1700	x8311
1512F	Education brute force, dp, greedy, implementation	1900	x6283
1512E	Permutation by Sum brute force, greedy, math	1600	x10564
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11585