Problemset - Codeforces

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number theory

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Problems

#	Name
248B	Chilly Willy math, number theory	1400	x5194
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x22081
1538F	Interesting Function binary search, dp, math, number theory	1500	x18349
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x17049
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14355
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x13562
576A	Vasya and Petya's Game math, number theory	1500	x13172
1444A	Division brute force, math, number theory	1500	x12563
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12473
707C	Pythagorean Triples math, number theory	1500	x12305
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12274
460B	Little Dima and Equation brute force, implementation, math, number theory	1500	x12096
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11925
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x11841
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x11717
1811E	Living Sequence binary search, dp, math, number theory	1500	x11562
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11523
1133D	Zero Quantity Maximization hashing, math, number theory	1500	x10940
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x10639
1744E1	Divisible Numbers (easy version) brute force, math, number theory	1500	x10234
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10037
1005D	Polycarp and Div 3 dp, greedy, number theory	1500	x9825
414A	Mashmokh and Numbers constructive algorithms, number theory	1500	x9643
264B	Good Sequences dp, number theory	1500	x9623
891A	Pride brute force, dp, greedy, math, number theory	1500	x9613
742B	Arpa’s obvious problem and Mehrdad’s terrible solution brute force, math, number theory	1500	x9032
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x8919
1062B	Math greedy, math, number theory	1500	x8412
1732D1	Balance (Easy version) brute force, data structures, implementation, number theory	1500	x8268
1195D1	Submarine in the Rybinsk Sea (easy edition) combinatorics, math, number theory	1500	x7769
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7518
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7145
630K	Indivisibility math, number theory	1500	x5033
566F	Clique in the Divisibility Graph dp, math, number theory	1500	x3523
172D	Calendar Reform *special problem, number theory	1500	x1382
235A	LCM Challenge number theory	1600	x16821
1458A	Row GCD math, number theory	1600	x15973
1349A	Orac and LCM data structures, math, number theory	1600	x15914
1344A	Hilbert's Hotel math, number theory, sortings	1600	x15189
1165D	Almost All Divisors math, number theory	1600	x15169
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x14963
1514C	Product 1 Modulo N greedy, number theory	1600	x14307
1305C	Kuroni and Impossible Calculation brute force, combinatorics, math, number theory	1600	x13614
1342C	Yet Another Counting Problem math, number theory	1600	x13602
1542C	Strange Function math, number theory	1600	x13523
1603B	Moderate Modular Mode constructive algorithms, math, number theory	1600	x13069
735D	Taxes math, number theory	1600	x12653
1753B	Factorial Divisibility math, number theory	1600	x12046
75C	Modified GCD binary search, number theory	1600	x12004
1920C	Partitioning the Array brute force, math, number theory	1600	x11809
1771C	Hossam and Trainees greedy, math, number theory	1600	x9011
678C	Joty and Chocolate implementation, math, number theory	1600	x8955
1612D	X-Magic Pair math, number theory	1600	x8837
1907E	Good Triples brute force, combinatorics, number theory	1600	x8797
343A	Rational Resistance math, number theory	1600	x8520
346A	Alice and Bob games, math, number theory	1600	x8458
1766D	Lucky Chains math, number theory	1600	x8376
1025B	Weakened Common Divisor brute force, greedy, number theory	1600	x7754
1928C	Physical Education Lesson brute force, math, number theory	1600	x7468
922C	Cave Painting brute force, number theory	1600	x6848
1932E	Final Countdown implementation, math, number theory	1600	x6783
986A	Fair graphs, greedy, number theory, shortest paths	1600	x6522
495B	Modular Equations math, number theory	1600	x6462
71C	Round Table Knights dp, math, number theory	1600	x6231
992B	Nastya Studies Informatics math, number theory	1600	x6104
1505B	DMCA *special problem, implementation, number theory	1600	x6003
237C	Primes on Interval binary search, number theory, two pointers	1600	x5570
568A	Primes or Palindromes? brute force, implementation, math, number theory	1600	x4999
337C	Quiz binary search, greedy, math, matrices, number theory	1600	x4771
353C	Find Maximum implementation, math, number theory	1600	x4730
1423K	Lonely Numbers binary search, math, number theory, two pointers	1600	x4662
375A	Divisible by Seven math, number theory	1600	x4662
626C	Block Towers brute force, greedy, math, number theory	1600	x4287
154B	Colliders math, number theory	1600	x4235
1056B	Divide Candies math, number theory	1600	x4071
225B	Well-known Numbers binary search, greedy, number theory	1600	x3104
171F	ucyhf *special problem, brute force, implementation, number theory	1600	x1245
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13059
1537D	Deleting Divisors games, math, number theory	1700	x11862
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11587
546D	Soldier and Number Game constructive algorithms, dp, math, number theory	1700	x11246
1485C	Floor and Mod binary search, brute force, math, number theory	1700	x9524
385C	Bear and Prime Numbers binary search, brute force, data structures, dp, implementation, math, number theory	1700	x9385
1469D	Ceil Divisions brute force, constructive algorithms, math, number theory	1700	x9159
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x8944
490C	Hacking Cypher brute force, math, number theory, strings	1700	x8908
1228C	Primes and Multiplication math, number theory	1700	x8699
1061C	Multiplicity data structures, dp, implementation, math, number theory	1700	x8361
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8266
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8038
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x7942
1260C	Infinite Fence greedy, math, number theory	1700	x7870
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x7820
1512G	Short Task brute force, dp, math, number theory	1700	x7808
1798C	Candy Store greedy, math, number theory	1700	x7782
582A	GCD Table constructive algorithms, greedy, number theory	1700	x7546
1114C	Trailing Loves (or L'oeufs?) brute force, implementation, math, number theory	1700	x7251
1690F	Shifting String graphs, math, number theory, strings	1700	x6812
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x6673
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6497