Problemset - Codeforces

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

#	Name
1251B	Binary Palindromes greedy, strings	1400	x10933
1250L	Divide The Students binary search, greedy, math	1500	x4059
1250J	The Parade binary search, greedy	1800	x2898
1250H	Happy Birthday math	1500	x4016
1250B	The Feast and the Bus brute force, constructive algorithms, greedy, math	1800	x2589
1250A	Berstagram implementation	1400	x4051
1249E	By Elevator or Stairs? dp, shortest paths	1700	x9522
1249D2	Too Many Segments (hard version) data structures, greedy, sortings	1800	x5166
1249D1	Too Many Segments (easy version) greedy	1800	x5035
1249C2	Good Numbers (hard version) binary search, greedy, math, meet-in-the-middle	1500	x12502
1249C1	Good Numbers (easy version) brute force, greedy, implementation	1300	x15398
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16608
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x7307
1245C	Constanze's Machine dp	1400	x17291
1244D	Paint the Tree brute force, constructive algorithms, dp, graphs, implementation, trees	1800	x7454
1243B2	Character Swap (Hard Version) strings	1600	x7059
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x7381
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12514
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x7302
1238D	AB-string binary search, combinatorics, dp, strings	1900	x5919
1238C	Standard Free2play dp, greedy, math	1600	x7349
1238B	Kill `Em All greedy, sortings	1300	x13458
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x4284
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1700	x6048
1237B	Balanced Tunnel data structures, sortings, two pointers	1300	x15468
1236C	Labs constructive algorithms, greedy, implementation	1300	x10069
1236B	Alice and the List of Presents combinatorics, math	1500	x10942
1234D	Distinct Characters Queries data structures	1600	x14654
1234C	Pipes dp, implementation	1500	x12464
1234B2	Social Network (hard version) data structures, implementation	1300	x16775
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x5174
1228C	Primes and Multiplication math, number theory	1700	x8936
1228B	Filling the Grid implementation, math	1400	x11487
1227D2	Optimal Subsequences (Hard Version) data structures, greedy	1800	x4286
1227D1	Optimal Subsequences (Easy Version) data structures, greedy	1600	x6351
1227C	Messy constructive algorithms	1700	x5488
1225D	Power Products hashing, math, number theory	1800	x7784
1225C	p-binary bitmasks, brute force, math	1600	x8873
1225B2	TV Subscriptions (Hard Version) implementation, two pointers	1300	x10397
1223C	Save the Nature binary search, greedy	1600	x8095
1221D	Make The Fence Great Again dp	1800	x8833
1220D	Alex and Julian bitmasks, math, number theory	1900	x3866
1220C	Substring Game in the Lesson games, greedy, strings	1300	x10133
1220B	Multiplication Table math, number theory	1300	x11544
1219C	Periodic integer number implementation, strings	1700	x1769
1218F	Workout plan data structures, greedy	1500	x2905
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7377
1217B	Zmei Gorynich greedy, math	1600	x11131
1217A	Creating a Character binary search, math	1300	x14853
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3404
1216D	Swords math	1300	x10999
1216C	White Sheet geometry, math	1700	x9100
1215D	Ticket Game games, greedy, math	1700	x6043
1215C	Swap Letters constructive algorithms, greedy	1500	x11028
1215B	The Number of Products combinatorics, dp, implementation	1400	x12612
1214D	Treasure Island dfs and similar, dp, flows, hashing	1900	x5131
1214A	Optimal Currency Exchange brute force, math	1400	x9055
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x7023
1213E	Two Small Strings brute force, constructive algorithms	1900	x5114
1213D2	Equalizing by Division (hard version) brute force, math, sortings	1600	x11355
1213D1	Equalizing by Division (easy version) brute force, implementation	1500	x11305
1211C	Ice Cream *special problem, greedy, sortings	1700	x483
1211B	Traveling Around the Golden Ring of Berland *special problem, implementation	1500	x760
1210B	Marcin and Training Camp brute force, greedy	1700	x5740
1210A	Anadi and Domino brute force, graphs	1700	x5134
1209D	Cow and Snacks dfs and similar, dsu, graphs	1700	x9123
1209C	Paint the Digits constructive algorithms, greedy, implementation	1500	x7443
1209B	Koala and Lights implementation, math, number theory	1300	x8130
1208D	Restore Permutation binary search, data structures, greedy, implementation	1900	x4835
1208C	Magic Grid constructive algorithms	1800	x5972
1208B	Uniqueness binary search, brute force, implementation, two pointers	1500	x10297
1207E	XOR Guessing bitmasks, interactive, math	1900	x5844
1207D	Number Of Permutations combinatorics	1800	x6031
1207C	Gas Pipeline dp, greedy	1500	x9797
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6570
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x6645
1203E	Boxers greedy, sortings	1500	x13703
1203D2	Remove the Substring (hard version) binary search, greedy, implementation, two pointers	1700	x7256
1203D1	Remove the Substring (easy version) greedy, implementation	1600	x8669
1203C	Common Divisors implementation, math	1300	x20195
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x5054
1202B	You Are Given a Decimal String... brute force, dp, shortest paths	1700	x4540
1201C	Maximum Median binary search, greedy, math, sortings	1400	x22570
1201B	Zero Array greedy, math	1500	x18328
1200D	White Lines brute force, data structures, dp, implementation, two pointers	1900	x4099
1200C	Round Corridor math, number theory	1400	x9779
1198B	Welfare State binary search, brute force, data structures, sortings	1600	x9389
1198A	MP3 sortings, two pointers	1600	x8973
1197D	Yet Another Subarray Problem dp, greedy, math	1900	x5308
1197C	Array Splitting greedy, sortings	1400	x13786
1196E	Connected Component on a Chessboard constructive algorithms, implementation	1800	x3688
1196D2	RGB Substring (hard version) data structures, dp, implementation, two pointers	1600	x9635
1196D1	RGB Substring (easy version) implementation	1500	x10448
1196C	Robot Breakout implementation	1500	x9281
1195D2	Submarine in the Rybinsk Sea (hard edition) combinatorics, math, number theory	1800	x4617
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7836
1195C	Basketball Exercise dp	1400	x25026
1194D	1-2-K Game games, math	1700	x6429
1194C	From S To T implementation, strings	1300	x13053
1194B	Yet Another Crosses Problem implementation	1300	x10263