Problemset - Codeforces

Problems

#	Name
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12668
1647B	Madoka and the Elegant Gift brute force, constructive algorithms, graphs, implementation	1200	x15463
1647A	Madoka and Math Dad implementation, math	800	x22839
1646F	Playing Around the Table constructive algorithms, greedy, implementation	2900	x530
1646E	Power Board brute force, dp, math, number theory	2200	x2482
1646D	Weight the Tree constructive algorithms, dfs and similar, dp, implementation, trees	2000	x3808
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14345
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x21260
1646A	Square Counting math	800	x24366
1644F	Basis combinatorics, fft, math, number theory	2900	x329
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3125
1644D	Cross Coloring data structures, implementation, math	1700	x7308
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13868
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20741
1644A	Doors and Keys implementation	800	x27456
1642B	Power Walking greedy	900	x17037
1642A	Hard Way geometry	800	x16243
1641F	Covering Circle geometry	3500	x101
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x210
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1189
1641C	Anonymity Is Important binary search, brute force, data structures, dsu, greedy, sortings	2200	x2506
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3830
1641A	Great Sequence brute force, greedy, sortings	1200	x17978
1638F	Two Posters brute force, data structures, greedy, two pointers	3200	x227
1638E	Colorful Operations brute force, data structures, implementation	2400	x1948
1638D	Big Brush constructive algorithms, data structures, greedy, implementation	2000	x4237
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14770
1638B	Odd Swap Sort data structures, math, sortings	1100	x20980
1638A	Reverse constructive algorithms, greedy, math	800	x21520
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x326
1637G	Birthday constructive algorithms, greedy, math	3000	x519
1637F	Towers constructive algorithms, dfs and similar, dp, greedy, trees	2500	x1798
1637E	Best Pair binary search, brute force, implementation	2100	x3388
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7820
1637C	Andrew and Stones greedy, implementation	1200	x17827
1637B	MEX and Array brute force, dp, greedy, math	1100	x14874
1637A	Sorting Parts brute force, sortings	800	x22414
1635F	Closest Pair data structures, greedy	2800	x1140
1635E	Cars 2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	2200	x2265
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6308
1635C	Differential Sorting constructive algorithms, greedy	1200	x17876
1635B	Avoid Local Maximums greedy	800	x17960
1635A	Min Or Sum bitmasks, greedy	800	x23068
1634F	Fibonacci Additions brute force, data structures, hashing, implementation, math	2700	x1617
1634E	Fair Share constructive algorithms, data structures, dfs and similar, graph matchings, graphs	2400	x1730
1634D	Finding Zero constructive algorithms, interactive, math	2000	x4413
1634C	OKEA constructive algorithms	1000	x18263
1634B	Fortune Telling bitmasks, math	1400	x16842
1634A	Reverse and Concatenate greedy, strings	800	x23956
1633F	Perfect Matching data structures, divide and conquer, interactive, trees	2800	x323
1633E	Spanning Tree Queries binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees	2400	x1554
1633D	Make Them Equal dp, greedy	1600	x14277
1633C	Kill the Monster brute force, math	1100	x20142
1633B	Minority greedy	800	x27905
1633A	Div. 7 brute force	800	x33478
1632E2	Distance Tree (hard version) binary search, dfs and similar, shortest paths, trees	2700	x1001
1632E1	Distance Tree (easy version) binary search, data structures, dfs and similar, graphs, shortest paths, trees	2400	x1180
1632D	New Year Concert binary search, data structures, greedy, math, number theory, two pointers	2000	x4740
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12826
1632B	Roof Construction bitmasks, constructive algorithms	1000	x22710
1632A	ABC implementation	800	x29594
1631B	Fun with Even Subarrays dp, greedy	1100	x20597
1631A	Min Max Swap greedy	800	x29592
1630F	Making It Bipartite flows, graph matchings, graphs, number theory	3400	x584
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x443
1630D	Flipping Range constructive algorithms, dp, greedy, number theory	2400	x1665
1630C	Paint the Middle dp, greedy, sortings, two pointers	2200	x2962
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5799
1630A	And Matching bitmasks, constructive algorithms	1500	x14648
1629B	GCD Arrays greedy, math, number theory	800	x23569
1629A	Download More RAM brute force, greedy, sortings	800	x29358
1628F	Spaceship Crisis Management binary search, data structures, geometry, sortings	3500	x89
1628E	Groceries in Meteor Town binary search, data structures, dsu, trees	3100	x912
1628D2	Game on Sum (Hard Version) combinatorics, dp, games, math	2400	x2170
1628D1	Game on Sum (Easy Version) combinatorics, dp, games, math	2100	x3230
1628C	Grid Xor constructive algorithms, greedy, implementation, interactive, math	2300	x3214
1628B	Peculiar Movie Preferences greedy, strings	1700	x11696
1628A	Meximum Array binary search, constructive algorithms, greedy, implementation, math, two pointers	1400	x15747
1627F	Not Splitting geometry, graphs, greedy, implementation, shortest paths	2700	x594
1627E	Not Escaping data structures, dp, implementation, shortest paths, two pointers	2200	x2416
1627D	Not Adding brute force, dp, math, number theory	1900	x8382
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14646
1627B	Not Sitting games, greedy, sortings	1300	x16697
1627A	Not Shading constructive algorithms, implementation	800	x24091
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x738
1626E	Black and White Tree dfs and similar, greedy, trees	2400	x1594
1626D	Martial Arts Tournament binary search, brute force, greedy, math	2100	x3938
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10987
1626B	Minor Reduction greedy, strings	1100	x22910
1626A	Equidistant Letters constructive algorithms, sortings	800	x29071
1625E2	Cats on the Upgrade (hard version) binary search, data structures, dfs and similar, graphs, trees	2800	x601
1625E1	Cats on the Upgrade (easy version) brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees	2500	x1052
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x2071
1625C	Road Optimization dp	1700	x10819
1625B	Elementary Particles brute force, greedy, sortings	1100	x16132
1625A	Ancient Civilization bitmasks, greedy, math	800	x17298
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x6031
1624F	Interacdive Problem binary search, constructive algorithms, interactive	2000	x3388
1624E	Masha-forgetful brute force, constructive algorithms, dp, hashing, implementation, strings	2000	x4150
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x17179