Problemset - Codeforces

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Before contest
Codeforces Round 941 (Div. 1)
4 days

Before contest
Codeforces Round 941 (Div. 2)
4 days

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Difficulty: —

math

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Problems

#	Name
1400B	RPG Protagonist brute force, greedy, math	1700	x10823
1398G	Running Competition bitmasks, fft, math, number theory	2600	x760
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2168
1398C	Good Subarrays data structures, dp, math	1600	x24024
1398A	Bad Triangle geometry, math	800	x26953
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14336
1395A	Boboniu Likes to Color Balls brute force, math	1000	x23403
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10246
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20194
1392I	Kevin and Grid fft, graphs, math	3300	x202
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x667
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x441
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x1937
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3234
1392B	Omkar and Infinity Clock implementation, math	800	x18333
1392A	Omkar and Password greedy, math	800	x20132
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14526
1391A	Suborrays constructive algorithms, math	800	x23974
1389E	Calendar Ambiguity math, number theory	2200	x3106
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x4021
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38183
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9328
1388B	Captain Flint and a Long Voyage greedy, math	1000	x21873
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24522
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x670
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x118
1385A	Three Pairwise Maximums math	800	x37471
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4747
1381E	Origami geometry, math, sortings	3300	x100
1380G	Circular Dungeon greedy, math, probabilities	2600	x763
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4612
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x387
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12461
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x76
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x1925
1375A	Sign Flipping constructive algorithms, math	1100	x18026
1374D	Zero Remainder Array math, sortings, two pointers	1400	x22119
1374B	Multiply by 2, divide by 6 math	900	x45570
1374A	Required Remainder math	800	x50399
1373C	Pluses and Minuses math	1300	x17886
1373A	Donut Shops greedy, implementation, math	1000	x25741
1372C	Omkar and Baseball constructive algorithms, math	1500	x17336
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x26028
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2291
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x4947
1371C	A Cookie for You greedy, implementation, math	1300	x20145
1371B	Magical Calendar math	1200	x18991
1371A	Magical Sticks math	800	x44151
1370C	Number Game games, math, number theory	1400	x23469
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23043
1370A	Maximum GCD greedy, implementation, math, number theory	800	x48505
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8241
1369C	RationalLee greedy, math, sortings, two pointers	1400	x18998
1369A	FashionabLee geometry, math	800	x35499
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x842
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11183
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x18976
1368A	C+= brute force, greedy, implementation, math	800	x36606
1367C	Social Distance constructive algorithms, greedy, math	1300	x22566
1367B	Even Array greedy, math	800	x50027
1366D	Two Divisors constructive algorithms, math, number theory	2000	x9855
1366C	Palindromic Paths greedy, math	1500	x13126
1366B	Shuffle math, two pointers	1300	x19521
1366A	Shovels and Swords binary search, greedy, math	1100	x28865
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x914
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x3822
1363A	Odd Selection brute force, implementation, math	1200	x34249
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x16937
1361F	Johnny and New Toy data structures, implementation, math	3300	x141
1361D	Johnny and James greedy, implementation, math, trees	2900	x306
1361B	Johnny and Grandmaster greedy, implementation, math, sortings	1900	x3384
1360G	A/B Matrix constructive algorithms, greedy, math	1900	x7370
1360D	Buying Shovels math, number theory	1300	x30616
1360A	Minimal Square greedy, math	800	x47836
1359F	RC Kaboom Show binary search, brute force, data structures, geometry, math	2900	x348
1359E	Modular Stability combinatorics, math, number theory	2000	x5717
1359C	Mixing Water binary search, math	1700	x13235
1359A	Berland Poker brute force, greedy, math	1000	x28708
1358C	Celex Update math	1600	x16986
1358A	Park Lighting greedy, math	800	x38005
1355E	Restorer Distance binary search, greedy, math, sortings, ternary search	2100	x4703
1355D	Game With Array constructive algorithms, math	1400	x17391
1355C	Count Triangles binary search, implementation, math, two pointers	1800	x10176
1355A	Sequence with Digits brute force, implementation, math	1200	x25426
1354C2	Not So Simple Polygon Embedding binary search, brute force, geometry, math	2000	x5799
1354C1	Simple Polygon Embedding binary search, geometry, math, ternary search	1400	x15300
1354A	Alarm Clock math	900	x23211
1353C	Board Moves math	1000	x34100
1353A	Most Unstable Array constructive algorithms, greedy, math	800	x38868
1352F	Binary String Reconstruction constructive algorithms, dfs and similar, math	1500	x16156
1352C	K-th Not Divisible by n binary search, math	1200	x49403
1352B	Same Parity Summands constructive algorithms, math	1200	x35121
1352A	Sum of Round Numbers implementation, math	800	x71347
1351B	Square? brute force, implementation, math	900	x16421
1350B	Orac and Models dp, math, number theory	1400	x20487
1350A	Orac and Factors math	900	x25531
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x107
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x395
1349D	Slime and Biscuits math, probabilities	3200	x798
1349B	Orac and Medians constructive algorithms, greedy, math	2000	x7683