number theory - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	1692	P1593D2 Half of Same brute force math number theory *1900	0 / 0	6
	1644	P1601A Array Elimination bitmasks greedy math number theory *1300	0 / 0	4
	1632	P1603A Di-visible Confusion constructive algorithms math number theory *1300	0 / 0	4
	1631	P1603B Moderate Modular Mode constructive algorithms math number theory *1600	1 / 1	5
	1630	P1603C Extreme Extension dp greedy math number theory *2300	0 / 0	8
	1629	P1603D Artistic Partition divide and conquer dp number theory *3000	0 / 0	10
	1623	P1605A A.M math number theory *800	0 / 0	3
	1619	P1605E Array Equalizer binary search greedy implementation math number theory sortings two pointers *2400	0 / 0	9
	1614	P1606C Banknotes greedy number theory *1400	0 / 0	4
	1590	P1608D Dominoes combinatorics fft graphs math number theory *2400	0 / 0	9
	1583	P1609A Divide and Multiply greedy implementation math number theory *900	0 / 0	3
	1578	P1609C Complex Market Analysis binary search dp implementation number theory schedules two pointers *1400	0 / 0	4
	1568	P1610D Not Quite Lee combinatorics dp math number theory *2000	0 / 0	7
	1551	P1612D X-Magic Pair math number theory *1600	0 / 0	5
	1538	P1614D1 Divan and Kostomuksha (easy version) dp number theory *2100	0 / 0	7
	1537	P1614D2 Divan and Kostomuksha (hard version) dp number theory *2300	0 / 0	8
	1518	P1617B GCD Problem brute force constructive algorithms math number theory *900	0 / 0	3
	1514	P1617E Christmas Chocolates dfs and similar dp games graphs implementation math number theory shortest paths trees *2700	0 / 0	10
	1477	P1622F Quadratic Set constructive algorithms hashing math number theory *2900	0 / 0	10
	1453	P1626F A Random Code Problem combinatorics dp math number theory probabilities *2800	0 / 0	10
	1449	P1627C Not Assigning constructive algorithms dfs and similar number theory trees *1400	0 / 0	4
	1447	P1627D Not Adding brute force dp math number theory *1900	0 / 0	6
	1425	P1629B GCD Arrays greedy math number theory *800	0 / 0	3
	1417	P1630D Flipping Range constructive algorithms dp greedy number theory *2400	0 / 0	9
	1416	P1630E Expected Components combinatorics math number theory probabilities *2900	0 / 0	10
	1414	P1630F Making It Bipartite flows graph matchings graphs number theory *3400	0 / 0	10
	1404	P1632D New Year Concert binary search data structures greedy math number theory two pointers *2000	0 / 0	7
	1386	P1635D Infinite Set bitmasks dp math matrices number theory strings *1800	0 / 0	6
	1345	P1644F Basis combinatorics fft math number theory *2900	0 / 0	10
	1340	P1646E Power Board brute force dp math number theory *2200	0 / 0	8
	1335	P1647D Madoka and the Best School in Russia constructive algorithms dp math number theory *1900	0 / 0	6
	1308	P1654D Potion Brewing Class dfs and similar math number theory trees *2100	0 / 0	7
	1301	P1656C Make Equal With Mod constructive algorithms math number theory sortings *1200	0 / 0	4
	1300	P1656D K-good constructive algorithms math number theory *1900	0 / 0	6
	1296	P1656H Equal LCM Subsets data structures math number theory *3200	0 / 0	10
	1287	P1658B Marin and Anti-coprime Permutation combinatorics math number theory *800	0 / 0	3
	1283	P1658E Gojou and Matrix Game data structures dp games hashing implementation math number theory sortings *2500	0 / 0	9
	1236	P1665D GCD Guess bitmasks chinese remainder theorem constructive algorithms games interactive math number theory *2000	0 / 0	7
	1182	P1673C Palindrome Basis brute force dp math number theory *1500	0 / 0	5
	1181	P1673D Lost Arithmetic Progression combinatorics math number theory *1900	0 / 0	6
	1180	P1673E Power or XOR? bitmasks combinatorics math number theory *2500	0 / 0	9
	1146	P1679A AvtoBus brute force greedy math number theory *900	0 / 0	3
	1116	P1684G Euclid Guess constructive algorithms flows graph matchings math number theory *2800	0 / 0	10
	1088	P1687E Become Big For Me combinatorics constructive algorithms greedy math number theory *3500	0 / 0	10
	1063	P1690F Shifting String graphs math number theory strings *1700	0 / 0	5
	990	P1698G Long Binary String bitmasks math matrices meet-in-the-middle number theory *2900	0 / 0	10
	982	P1699E Three Days Grace data structures dp greedy math number theory two pointers *2600	0 / 0	10
	964	P1702F Equate Multisets constructive algorithms data structures greedy math number theory *1700	0 / 0	5
	936	P1706D1 Chopping Carrots (Easy Version) binary search brute force constructive algorithms greedy number theory *1700	0 / 0	5
	935	P1706D2 Chopping Carrots (Hard Version) brute force constructive algorithms data structures dp greedy math number theory two pointers *2400	0 / 0	9
	928	P1707F Bugaboo bitmasks constructive algorithms dp number theory *3500	0 / 0	10
	911	P1712B Woeful Permutation constructive algorithms greedy number theory *800	0 / 0	3
	908	P1712E1 LCM Sum (easy version) binary search brute force combinatorics math number theory two pointers *2300	0 / 0	8
	907	P1712E2 LCM Sum (hard version) brute force data structures math number theory two pointers *2500	0 / 0	9
	902	P1713D Tournament Countdown constructive algorithms greedy interactive number theory probabilities *1800	0 / 0	6
	895	P1714E Add Modulo 10 brute force math number theory *1400	0 / 0	4
	881	P1716F Bags with Balls combinatorics dp math number theory *2500	0 / 0	9
	880	P1717A Madoka and Strange Thoughts math number theory *800	0 / 0	3
	876	P1717E Madoka and The Best University math number theory *2200	0 / 0	8
	872	P1718B Fibonacci Strings greedy implementation math number theory *2000	0 / 0	7
	871	P1718C Tonya and Burenka-179 data structures greedy math number theory *2400	0 / 0	9
	868	P1718F Burenka, an Array and Queries data structures math number theory *3300	0 / 0	10
	864	P1720A Burenka Plays with Fractions math number theory *900	0 / 0	3
	841	P1725E Electrical Efficiency combinatorics data structures dp math number theory trees *2500	0 / 0	9
	820	P1728E Red-Black Pepper brute force data structures greedy math number theory *2300	0 / 0	8
	806	P1730E Maximums and Minimums combinatorics data structures divide and conquer number theory *2700	0 / 0	10
	802	P1731C Even Subarrays bitmasks brute force hashing math number theory *1700	0 / 0	5
	800	P1731E Graph Cost dp greedy math number theory *2000	0 / 0	7
	798	P1732A Bestie brute force combinatorics constructive algorithms implementation math number theory *1000	0 / 0	3
	794	P1732D1 Balance (Easy version) brute force data structures implementation number theory *1500	0 / 0	5
	793	P1732D2 Balance (Hard version) brute force data structures number theory *2400	0 / 0	9
	792	P1732E Location data structures dp math number theory *2800	0 / 0	10
	781	P1734E Rectangular Congruence constructive algorithms number theory *2100	0 / 0	7
	772	P1736B Playing with GCD math number theory *1200	0 / 0	4
	760	P1737F Ela and Prime GCD constructive algorithms math number theory *3300	0 / 0	10
	739	P1740A Factorise N+M constructive algorithms number theory *800	0 / 0	3
	729	P1740I Arranging Crystal Balls data structures divide and conquer divide and conquer dp geometry graphs number theory *3500	0 / 0	10
	711	P1742D Coprime brute force greedy number theory *1100	0 / 0	3
	682	P1744E1 Divisible Numbers (easy version) brute force math number theory *1500	0 / 0	5
	679	P1744E2 Divisible Numbers (hard version) brute force math number theory *1900	0 / 0	6
	651	P1748D ConstructOR bitmasks chinese remainder theorem combinatorics constructive algorithms math number theory *2100	0 / 0	7
	641	P1749D Counting Arrays combinatorics dp math number theory *1900	0 / 0	6
	629	P1750D Count GCD combinatorics math number theory *1800	0 / 0	6
	616	P1753B Factorial Divisibility math number theory *1600	1 / 1	5
	598	P1758C Almost All Multiples greedy number theory *1400	0 / 0	4
	584	P1759D Make It Round brute force number theory *1400	0 / 0	4
	581	P1759F All Possible Digits binary search data structures greedy math number theory *1800	0 / 0	6
	555	P1762A Divide and Conquer greedy math number theory *800	0 / 0	3
	554	P1762B Make Array Good constructive algorithms implementation number theory sortings *1100	0 / 0	3
	552	P1762D GCD Queries constructive algorithms interactive number theory *2100	0 / 11	7
	539	P1763D Valid Bitonic Permutations combinatorics dp implementation math number theory *2200	0 / 0	8
	538	P1763E Node Pairs dp graphs math number theory *2200	0 / 0	8
	532	P1764B Doremy's Perfect Math Class math number theory *900	0 / 0	3
	493	P1765M Minimum LCM math number theory *1000	1 / 1	3
	484	P1766D Lucky Chains math number theory *1600	0 / 0	5
	473	P1768A Greatest Convex greedy math number theory *800	0 / 0	3
	468	P1768E Partial Sorting combinatorics math number theory *2300	0 / 0	8
	459	P1770C Koxia and Number Theory brute force chinese remainder theorem math number theory *1700	1 / 1	5
	453	P1770F Koxia and Sequence bitmasks combinatorics dp math number theory *3100	0 / 0	10
	444	P1771C Hossam and Trainees greedy math number theory *1600	0 / 0	5

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