Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
3 days
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Problems

#	Name
1418F	Equal Product data structures, math, number theory, two pointers	3000	x368
1418A	Buying Torches math	1000	x22909
1417B	Two Arrays greedy, math, sortings	1100	x14452
1417A	Copy-paste greedy, math	800	x18221
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4393
1416B	Make Them Equal constructive algorithms, greedy, math	2000	x6105
1415E	New Game Plus! constructive algorithms, greedy, math	2200	x2706
1415A	Prison Break brute force, math	800	x15148
1413E	Solo mid Oracle greedy, math, ternary search	2100	x2009
1413A	Finding Sasuke constructive algorithms, math	800	x14749
1411G	No Game No Life bitmasks, games, math, matrices	2700	x659
1411F	The Thorny Path greedy, math	3000	x371
1411E	Poman Numbers bitmasks, greedy, math, strings	2300	x1631
1409D	Decrease the Sum of Digits greedy, math	1500	x19333
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x23256
1409B	Minimum Product brute force, greedy, math	1100	x28910
1409A	Yet Another Two Integers Problem greedy, math	800	x65910
1408I	Bitwise Magic dp, math	3200	x174
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8831
1408B	Arrays Sum constructive algorithms, greedy, math	1400	x9934
1407C	Chocolate Bunny constructive algorithms, interactive, math, two pointers	1600	x11960
1407B	Big Vova brute force, greedy, math, number theory	1300	x16980
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20410
1406E	Deleting Numbers interactive, math, number theory	2600	x1612
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3484
1406A	Subset Mex greedy, implementation, math	900	x21402
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x1072
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x51
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1185
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9287
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x24192
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x21065
1401A	Distance and Axis constructive algorithms, math	900	x27408
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x955
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x10224
1400B	RPG Protagonist brute force, greedy, math	1700	x11169
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1082
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2415
1398C	Good Subarrays data structures, dp, math	1600	x26170
1398A	Bad Triangle geometry, math	800	x27488
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14678
1395A	Boboniu Likes to Color Balls brute force, math	1000	x24065
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10603
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20498
1392I	Kevin and Grid fft, graphs, math	3300	x204
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x704
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x486
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x2141
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3521
1392B	Omkar and Infinity Clock implementation, math	800	x18468
1392A	Omkar and Password greedy, math	800	x20569
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14986
1391A	Suborrays constructive algorithms, math	800	x24347
1389E	Calendar Ambiguity math, number theory	2200	x3436
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x4304
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x40976
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9700
1388B	Captain Flint and a Long Voyage greedy, math	1000	x22262
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24893
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x711
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x121
1385A	Three Pairwise Maximums math	800	x38995
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5040
1381E	Origami geometry, math, sortings	3300	x267
1380G	Circular Dungeon greedy, math, probabilities	2600	x790
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4687
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x426
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12636
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x265
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x2228
1375A	Sign Flipping constructive algorithms, math	1100	x18337
1374D	Zero Remainder Array math, sortings, two pointers	1400	x23635
1374B	Multiply by 2, divide by 6 math	900	x49823
1374A	Required Remainder math	800	x53470
1373C	Pluses and Minuses math	1300	x18334
1373A	Donut Shops greedy, implementation, math	1000	x26907
1372C	Omkar and Baseball constructive algorithms, math	1500	x17787
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x27833
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2337
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x5221
1371C	A Cookie for You greedy, implementation, math	1300	x20502
1371B	Magical Calendar math	1200	x19137
1371A	Magical Sticks math	800	x45865
1370C	Number Game games, math, number theory	1400	x24484
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23645
1370A	Maximum GCD greedy, implementation, math, number theory	800	x51698
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8597
1369C	RationalLee greedy, math, sortings, two pointers	1400	x19547
1369A	FashionabLee geometry, math	800	x36438
1368F	Lamps on a Circle games, implementation, interactive, math	2600	x1037
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11759
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x19664
1368A	C+= brute force, greedy, implementation, math	800	x39029
1367C	Social Distance constructive algorithms, greedy, math	1300	x23435
1367B	Even Array greedy, math	800	x53248
1366D	Two Divisors constructive algorithms, math, number theory	2000	x10454
1366C	Palindromic Paths greedy, math	1500	x13551
1366B	Shuffle math, two pointers	1300	x20906
1366A	Shovels and Swords binary search, greedy, math	1100	x29984
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x1159