Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 941 (Div. 1)
34:16:40
Register now »

*has extra registration

Before contest
Codeforces Round 941 (Div. 2)
34:16:41
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

math

Add tag

Problems

#	Name
1560D	Make a Power of Two greedy, math, strings	1300	x17608
1175A	From Hero to Zero implementation, math	900	x17606
1656B	Subtract Operation data structures, greedy, math, two pointers	1100	x17585
1857D	Strong Vertices math, sortings, trees	1300	x17560
805A	Fake NP greedy, math	1000	x17553
1093A	Dice Rolling math	800	x17548
977D	Divide by three, multiply by two dfs and similar, math, sortings	1400	x17541
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x17496
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17470
1946B	Maximum Sum dp, greedy, math	1100	x17452
1355D	Game With Array constructive algorithms, math	1400	x17401
1844B	Permutations & Primes constructive algorithms, math	1000	x17397
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17377
664A	Complicated GCD math, number theory	800	x17361
1372C	Omkar and Baseball constructive algorithms, math	1500	x17348
1091A	New Year and the Christmas Ornament brute force, implementation, math	800	x17319
1440B	Sum of Medians greedy, math	900	x17271
1736B	Playing with GCD math, number theory	1200	x17208
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x17194
1496B	Max and Mex math	1100	x17176
1741C	Minimize the Thickness brute force, greedy, math, two pointers	1100	x17156
1204B	Mislove Has Lost an Array greedy, math	900	x17125
1783B	Matrix of Differences constructive algorithms, math	1100	x17119
1810B	Candies constructive algorithms, math, number theory	800	x17114
1839A	The Good Array greedy, implementation, math	800	x17060
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x17009
1358C	Celex Update math	1600	x16994
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x16988
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16973
1113A	Sasha and His Trip dp, greedy, math	900	x16965
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x16953
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x16951
1759C	Thermostat greedy, math, shortest paths	1100	x16946
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x16942
1625A	Ancient Civilization bitmasks, greedy, math	800	x16933
1255A	Changing Volume math	800	x16882
1047B	Cover Points geometry, math	900	x16877
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x16868
1789A	Serval and Mocha's Array brute force, math, number theory	800	x16846
1427A	Avoiding Zero math, sortings	900	x16818
1669E	2-Letter Strings data structures, math, strings	1200	x16803
1734C	Removing Smallest Multiples greedy, math	1200	x16785
1713C	Build Permutation constructive algorithms, dp, math	1200	x16784
1176B	Merge it! math	1100	x16766
1459A	Red-Blue Shuffle math, probabilities	800	x16761
1750A	Indirect Sort constructive algorithms, implementation, math	800	x16740
1288B	Yet Another Meme Problem math	1100	x16719
1922C	Closest Cities greedy, implementation, math	1300	x16702
1101A	Minimum Integer math	1000	x16693
1731B	Kill Demodogs greedy, math	1100	x16676
1407B	Big Vova brute force, greedy, math, number theory	1300	x16662
1485B	Replace and Keep Sorted dp, implementation, math	1200	x16642
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16641
1495A	Diamond Miner geometry, greedy, math, sortings	1200	x16640
1270A	Card Game games, greedy, math	800	x16607
1279A	New Year Garland math	900	x16590
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16559
1777B	Emordnilap combinatorics, greedy, math	900	x16550
1780B	GCD Partition brute force, greedy, math, number theory	1100	x16475
1853B	Fibonaccharsis binary search, brute force, math	1200	x16461
1051B	Relatively Prime Pairs greedy, math, number theory	1000	x16459
1248B	Grow The Tree greedy, math, sortings	900	x16448
1351B	Square? brute force, implementation, math	900	x16424
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16394
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x16391
670A	Holidays brute force, constructive algorithms, greedy, math	900	x16388
1884A	Simple Design brute force, greedy, math	800	x16385
1029B	Creating the Contest dp, greedy, math	1200	x16374
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16363
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16355
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x16340
1668B	Social Distance greedy, math, sortings	900	x16302
1221A	2048 Game brute force, greedy, math	1000	x16296
1154B	Make Them Equal math	1200	x16274
573A	Bear and Poker implementation, math, number theory	1300	x16268
1208A	XORinacci math	900	x16257
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16251
1249B2	Books Exchange (hard version) dfs and similar, dsu, math	1300	x16221
1706B	Making Towers dp, greedy, math	1100	x16193
1462D	Add to Neighbour and Remove greedy, math, number theory	1400	x16190
1848A	Vika and Her Friends games, math	900	x16167
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16166
1428A	Box is Pull math	800	x16155
1668A	Direction Change implementation, math	800	x16141
1196B	Odd Sum Segments constructive algorithms, math	1200	x16110
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16082
496A	Minimum Difficulty brute force, implementation, math	900	x16077
1443A	Kids Seating constructive algorithms, math	800	x16068
1669H	Maximal AND bitmasks, greedy, math	1300	x16048
1829F	Forever Winter dfs and similar, graphs, math	1300	x16046
1334C	Circle of Monsters brute force, constructive algorithms, greedy, math	1600	x16031
764A	Taymyr is calling you brute force, implementation, math	800	x16023
1730C	Minimum Notation data structures, greedy, math, sortings	1200	x16018
456B	Fedya and Maths math, number theory	1200	x15963
1270B	Interesting Subarray constructive algorithms, greedy, math	1200	x15951
1419B	Stairs brute force, constructive algorithms, greedy, implementation, math	1200	x15939
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x15936
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x15927
1458A	Row GCD math, number theory	1600	x15907
1263A	Sweet Problem math	1100	x15884