Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
32:38:14
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Problems

#	Name
1175A	From Hero to Zero implementation, math	900	x17618
1560D	Make a Power of Two greedy, math, strings	1300	x17616
1656B	Subtract Operation data structures, greedy, math, two pointers	1100	x17594
1857D	Strong Vertices math, sortings, trees	1300	x17577
805A	Fake NP greedy, math	1000	x17560
977D	Divide by three, multiply by two dfs and similar, math, sortings	1400	x17549
1093A	Dice Rolling math	800	x17548
1946B	Maximum Sum dp, greedy, math	1100	x17513
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17503
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x17501
1844B	Permutations & Primes constructive algorithms, math	1000	x17403
1355D	Game With Array constructive algorithms, math	1400	x17402
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17388
664A	Complicated GCD math, number theory	800	x17374
1372C	Omkar and Baseball constructive algorithms, math	1500	x17353
1091A	New Year and the Christmas Ornament brute force, implementation, math	800	x17322
1440B	Sum of Medians greedy, math	900	x17285
1736B	Playing with GCD math, number theory	1200	x17216
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x17207
1496B	Max and Mex math	1100	x17189
1741C	Minimize the Thickness brute force, greedy, math, two pointers	1100	x17160
1783B	Matrix of Differences constructive algorithms, math	1100	x17127
1204B	Mislove Has Lost an Array greedy, math	900	x17127
1810B	Candies constructive algorithms, math, number theory	800	x17117
1839A	The Good Array greedy, implementation, math	800	x17064
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x17013
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17003
1358C	Celex Update math	1600	x16999
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16986
1113A	Sasha and His Trip dp, greedy, math	900	x16966
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x16965
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x16964
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x16956
1759C	Thermostat greedy, math, shortest paths	1100	x16951
1625A	Ancient Civilization bitmasks, greedy, math	800	x16935
1255A	Changing Volume math	800	x16883
1047B	Cover Points geometry, math	900	x16883
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x16882
1789A	Serval and Mocha's Array brute force, math, number theory	800	x16861
1669E	2-Letter Strings data structures, math, strings	1200	x16826
1427A	Avoiding Zero math, sortings	900	x16818
1734C	Removing Smallest Multiples greedy, math	1200	x16796
1713C	Build Permutation constructive algorithms, dp, math	1200	x16789
1176B	Merge it! math	1100	x16774
1459A	Red-Blue Shuffle math, probabilities	800	x16763
1750A	Indirect Sort constructive algorithms, implementation, math	800	x16743
1922C	Closest Cities greedy, implementation, math	1300	x16726
1288B	Yet Another Meme Problem math	1100	x16719
1101A	Minimum Integer math	1000	x16696
1731B	Kill Demodogs greedy, math	1100	x16690
1407B	Big Vova brute force, greedy, math, number theory	1300	x16665
1495A	Diamond Miner geometry, greedy, math, sortings	1200	x16652
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16647
1485B	Replace and Keep Sorted dp, implementation, math	1200	x16644
1270A	Card Game games, greedy, math	800	x16608
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16597
1279A	New Year Garland math	900	x16590
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16571
1777B	Emordnilap combinatorics, greedy, math	900	x16557
1780B	GCD Partition brute force, greedy, math, number theory	1100	x16493
1853B	Fibonaccharsis binary search, brute force, math	1200	x16475
1051B	Relatively Prime Pairs greedy, math, number theory	1000	x16469
1248B	Grow The Tree greedy, math, sortings	900	x16451
1351B	Square? brute force, implementation, math	900	x16429
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16406
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x16401
1884A	Simple Design brute force, greedy, math	800	x16397
670A	Holidays brute force, constructive algorithms, greedy, math	900	x16394
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x16393
1029B	Creating the Contest dp, greedy, math	1200	x16379
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16365
1221A	2048 Game brute force, greedy, math	1000	x16305
1668B	Social Distance greedy, math, sortings	900	x16304
1154B	Make Them Equal math	1200	x16276
573A	Bear and Poker implementation, math, number theory	1300	x16271
1208A	XORinacci math	900	x16260
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16255
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16224
1462D	Add to Neighbour and Remove greedy, math, number theory	1400	x16196
1706B	Making Towers dp, greedy, math	1100	x16194
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16179
1848A	Vika and Her Friends games, math	900	x16175
1428A	Box is Pull math	800	x16157
1668A	Direction Change implementation, math	800	x16142
1196B	Odd Sum Segments constructive algorithms, math	1200	x16114
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16086
496A	Minimum Difficulty brute force, implementation, math	900	x16082
1669H	Maximal AND bitmasks, greedy, math	1300	x16074
1443A	Kids Seating constructive algorithms, math	800	x16068
1829F	Forever Winter dfs and similar, graphs, math	1300	x16064
1334C	Circle of Monsters brute force, constructive algorithms, greedy, math	1600	x16034
764A	Taymyr is calling you brute force, implementation, math	800	x16026
1730C	Minimum Notation data structures, greedy, math, sortings	1200	x16025
456B	Fedya and Maths math, number theory	1200	x15965
1270B	Interesting Subarray constructive algorithms, greedy, math	1200	x15954
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x15951
1419B	Stairs brute force, constructive algorithms, greedy, implementation, math	1200	x15941
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x15937
1458A	Row GCD math, number theory	1600	x15919
1263A	Sweet Problem math	1100	x15886