Problemset - Codeforces

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Codeforces Round 954 (Div. 3)
6 days

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Difficulty: —

math

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Problems

#	Name
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x27433
1538B	Friends and Candies greedy, math	800	x31277
1537F	Figure Fixing constructive algorithms, dfs and similar, dsu, graphs, greedy, math	2200	x2379
1537D	Deleting Divisors games, math, number theory	1700	x11964
1537C	Challenging Cliffs constructive algorithms, greedy, implementation, math	1200	x26682
1537B	Bad Boy constructive algorithms, greedy, math	900	x28495
1537A	Arithmetic Array greedy, math	800	x36387
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x920
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x2358
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x29843
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12593
1534B	Histogram Ugliness greedy, implementation, math	1100	x12407
1533A	Travel to Bertown *special problem, implementation, math		x1069
1532B	Frog Jumping *special problem, math		x821
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x754
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x8960
1530A	Binary Decimal greedy, math	800	x20823
1529B	Sifid and Strange Subsequences greedy, math, sortings	1100	x20396
1529A	Eshag Loves Big Arrays constructive algorithms, greedy, math	800	x29488
1528F	AmShZ Farm combinatorics, fft, math	3300	x279
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8529
1527D	MEX Tree combinatorics, dfs and similar, implementation, math, trees	2400	x1847
1527C	Sequence Pair Weight hashing, implementation, math	1600	x13208
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1032
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2365
1526B	I Hate 1111 dp, math, number theory	1400	x29269
1525E	Assimilation IV combinatorics, dp, math, probabilities, two pointers	2100	x1997
1525A	Potion-making math, number theory	800	x25141
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1548
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20944
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35831
1520E	Arranging The Sheep greedy, math	1400	x20352
1520D	Same Differences data structures, hashing, math	1200	x43799
1520B	Ordinary Numbers brute force, math, number theory	800	x43309
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14730
1519B	The Cake Is a Lie dp, math	800	x30185
1519A	Red and Blue Beans math	800	x28410
1517A	Sum of 2050 greedy, math	800	x25178
1516E	Baby Ehab Plays with Permutations combinatorics, dp, math	2500	x818
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11609
1515G	Phoenix and Odometers dfs and similar, graphs, math, number theory	2700	x956
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3411
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24351
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20073
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x23405
1514A	Perfectly Imperfect Array math, number theory	800	x23876
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1422
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13999
1512G	Short Task brute force, dp, math, number theory	1700	x7894
1512E	Permutation by Sum brute force, greedy, math	1600	x10112
1511E	Colorings and Dominoes combinatorics, dp, greedy, math	2100	x2484
1511B	GCD Length constructive algorithms, math, number theory	1100	x22143
1510J	Japanese Game constructive algorithms, math	2700	x511
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x453
1510D	Digits dp, math, number theory	2100	x1807
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3121
1506A	Strange Table math	800	x30237
1505F	Math *special problem, math	2200	x1479
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x17599
1503E	2-Coloring combinatorics, dp, math	3100	x597
1500B	Two chandeliers binary search, brute force, chinese remainder theorem, math, number theory	2200	x2004
1500A	Going Home brute force, hashing, implementation, math	1800	x8609
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1416
1499D	The Number of Pairs dp, math, number theory	2100	x5550
1499C	Minimum Grid Path brute force, data structures, greedy, math	1500	x12415
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21056
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x858
1498A	GCD Sum brute force, math	800	x22741
1497E2	Square-free division (hard version) data structures, dp, greedy, math, number theory, two pointers	2500	x1573
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8085
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x16662
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x24864
1497B	M-arrays constructive algorithms, greedy, math	1200	x18904
1496B	Max and Mex math	1100	x17269
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1198
1495A	Diamond Miner geometry, greedy, math, sortings	1200	x16787
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x872
1493D	GCD of an Array brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers	2100	x4788
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x5967
1492B	Card Deck data structures, greedy, math	1100	x18184
1492A	Three swimmers math	800	x22497
1491G	Switch and Flip constructive algorithms, graphs, math	2800	x737
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x6956
1491B	Minimal Cost brute force, math	1200	x13618
1490G	Old Floppy Drive binary search, data structures, math	1900	x5535
1490F	Equalize the Array binary search, data structures, greedy, math, sortings	1500	x15639
1490C	Sum of Cubes binary search, brute force, brute force, math	1100	x31821
1490B	Balanced Remainders brute force, constructive algorithms, math	1000	x25756
1490A	Dense Array greedy, math	800	x30783
1488J	Flower Shop *special problem, data structures, fft, math	3100	x34
1488C	Two Policemen *special problem, binary search, brute force, math	1900	x402
1488A	From Zero To Y *special problem, math	900	x1354
1487G	String Counting combinatorics, dp, fft, math	2700	x579
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x17255
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x13801
1487B	Cat Cycle math, number theory	1200	x20022
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x4966
1485C	Floor and Mod binary search, brute force, math, number theory	1700	x9647
1485B	Replace and Keep Sorted dp, implementation, math	1200	x16753
1485A	Add and Divide brute force, greedy, math, number theory	1000	x21214