Problemset - Codeforces

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Pinely Round 4 (Div. 1 + Div. 2)
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Problems

#	Name
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1197
1555F	Good Graph data structures, dsu, graphs, trees	2700	x836
1554E	You dfs and similar, dp, math, number theory	2600	x1201
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x199
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x680
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x993
1552I	Organizing a Music Festival dfs and similar, math	3400	x124
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x385
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x521
1550F	Jumping Around binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths	2700	x651
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1485
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x396
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x240
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1789
1545F	AquaMoon and Potatoes brute force, data structures, dp	3500	x106
1545E2	AquaMoon and Time Stop (hard version) data structures, dp	3500	x81
1545E1	AquaMoon and Time Stop (easy version) data structures, dp	3500	x77
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x473
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x597
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x397
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x829
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1213
1540E	Tasty Dishes math, matrices	3500	x102
1540D	Inverse Inversions binary search, brute force, data structures	3200	x269
1540C2	Converging Array (Hard Version) dp, math	2900	x446
1540C1	Converging Array (Easy Version) dp, math	2700	x606
1539F	Strange Array data structures, greedy, sortings	2600	x849
1539E	Game with Cards binary search, constructive algorithms, data structures, dp, greedy, implementation	2500	x935
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x926
1535F	String Distance binary search, brute force, data structures, hashing, implementation, strings	3000	x446
1534H	Lost Nodes constructive algorithms, dp, graphs, interactive, sortings, trees	3500	x147
1534G	A New Beginning data structures, dp, geometry, sortings	3300	x547
1534F2	Falling Sand (Hard Version) dfs and similar, dp, graphs, greedy	3000	x529
1534F1	Falling Sand (Easy Version) dfs and similar, graphs, greedy	2500	x1211
1530H	Turing's Award data structures, dp	3400	x151
1530G	What a Reversal constructive algorithms	3300	x143
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x765
1528F	AmShZ Farm combinatorics, fft, math	3300	x281
1528E	Mashtali and Hagh Trees combinatorics, dp, trees	2900	x517
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1415
1527E	Partition Game binary search, data structures, divide and conquer, dp	2500	x2242
1527D	MEX Tree combinatorics, dfs and similar, implementation, math, trees	2400	x1869
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x253
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1040
1525F	Goblins And Gnomes brute force, dp, flows, graph matchings	2800	x326
1523H	Hopping Around the Array data structures, dp	3500	x238
1523G	Try Booking data structures, divide and conquer	3200	x443
1523F	Favorite Game bitmasks, dp	3300	x416
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1595
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2146
1521E	Nastia and a Beautiful Matrix binary search, constructive algorithms, dp, greedy	2700	x654
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x1879
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x402
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x815
1517H	Fly Around the World dp, geometry	3500	x68
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x468
1517F	Reunion combinatorics, dp, trees	3200	x453
1517E	Group Photo binary search, data structures, implementation, two pointers	2500	x961
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x830
1515I	Phoenix and Diamonds binary search, data structures, sortings	3400	x251
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x222
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x986
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1729
1514E	Baby Ehab's Hyper Apartment binary search, graphs, interactive, sortings, two pointers	2700	x593
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1214
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x721
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x424
1510J	Japanese Game constructive algorithms, math	2700	x516
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x463
1510H	Hard Optimization dp	3200	x98
1510F	Fiber Shape	2800	x58
1510E	Equilibrium Point /\textbackslash/\textbackslash	2700	x248
1510C	Cactus Not Enough dfs and similar, graph matchings, graphs	2900	x211
1510B	Button Lock flows, graph matchings, graphs	2600	x728
1510A	ASCII Automata Art	3100	x152
1508F	Optimal Encoding brute force, data structures	3500	x120
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x331
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x546
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1450
1505H	L BREAK into program *special problem	2500	x497
1505G	Encoded message *special problem, implementation	2600	x298
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x137
1503E	2-Coloring combinatorics, dp, math	3100	x603
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x988
1500F	Cupboards Jumps dp	3500	x342
1500E	Subset Trick binary search, data structures	3300	x216
1500D	Tiles for Bathroom data structures, sortings, two pointers	2900	x450
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x787
1499G	Graph Coloring data structures, graphs, interactive	3100	x188
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x1277
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1436
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x872
1497E2	Square-Free Division (hard version) data structures, dp, greedy, math, number theory, two pointers	2500	x1596
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1510
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x292
1495E	Qingshan and Daniel brute force, data structures, greedy, implementation	3200	x412
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1205
1494F	Delete The Edges brute force, constructive algorithms, dfs and similar, graphs, implementation	2900	x335
1494E	A-Z Graph constructive algorithms, data structures, graphs, hashing	2400	x1682
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x384