Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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math

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Problems

#	Name
760A	Petr and a calendar implementation, math	800	x7721
1452D	Radio Towers combinatorics, dp, math	1600	x7737
962C	Make a Square brute force, implementation, math	1400	x7739
468A	24 Game constructive algorithms, greedy, math	1500	x7741
1512G	Short Task brute force, dp, math, number theory	1700	x7759
667A	Pouring Rain geometry, math	1100	x7766
438D	The Child and Sequence data structures, math	2300	x7767
1627D	Not Adding brute force, dp, math, number theory	1900	x7781
182D	Common Divisors brute force, hashing, implementation, math, strings	1400	x7785
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7791
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7799
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x7809
858A	k-rounding brute force, math, number theory	1100	x7830
1260C	Infinite Fence greedy, math, number theory	1700	x7855
361B	Levko and Permutation constructive algorithms, math, number theory	1200	x7867
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x7869
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x7926
1209B	Koala and Lights implementation, math, number theory	1300	x7930
1010A	Fly binary search, math	1500	x7985
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x7995
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8004
1615C	Menorah brute force, graphs, greedy, math	1600	x8015
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8020
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8031
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8043
1151D	Stas and the Queue at the Buffet greedy, math, sortings	1600	x8049
1422C	Bargain combinatorics, dp, math	1700	x8058
1027B	Numbers on the Chessboard implementation, math	1200	x8062
485A	Factory implementation, math, matrices	1400	x8076
854B	Maxim Buys an Apartment constructive algorithms, math	1200	x8113
997A	Convert to Ones brute force, greedy, implementation, math	1500	x8143
557A	Ilya and Diplomas greedy, implementation, math	1100	x8193
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8225
1369D	TediousLee dp, graphs, greedy, math, trees	1900	x8231
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x8247
1766D	Lucky Chains math, number theory	1600	x8270
630R	Game games, math	1200	x8275
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8291
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8294
1061C	Multiplicity data structures, dp, implementation, math, number theory	1700	x8295
978D	Almost Arithmetic Progression brute force, implementation, math	1500	x8315
1075A	The King's Race implementation, math	800	x8320
1295D	Same GCDs math, number theory	1800	x8353
553A	Kyoya and Colored Balls combinatorics, dp, math	1500	x8356
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8366
1795D	Triangle Coloring combinatorics, math	1600	x8367
1951C	Ticket Hoarding greedy, math, sortings	1400	x8378
1062B	Math greedy, math, number theory	1500	x8378
1082A	Vasya and Book implementation, math	1200	x8401
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8431
346A	Alice and Bob games, math, number theory	1600	x8434
195A	Let's Watch Football binary search, brute force, math	1000	x8460
1348D	Phoenix and Science binary search, constructive algorithms, greedy, implementation, math	1900	x8464
916A	Jamie and Alarm Snooze brute force, implementation, math	900	x8467
1327E	Count The Blocks combinatorics, dp, math	1800	x8479
343A	Rational Resistance math, number theory	1600	x8485
660A	Co-prime Array greedy, implementation, math, number theory	1200	x8497
1500A	Going Home brute force, hashing, implementation, math	1800	x8500
592B	The Monster and the Squirrel math	1100	x8523
1311D	Three Integers brute force, math	2000	x8562
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8604
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8610
1225C	p-binary bitmasks, brute force, math	1600	x8625
748A	Santa Claus and a Place in a Class implementation, math	800	x8632
344B	Simple Molecules brute force, graphs, math	1200	x8633
876B	Divisiblity of Differences implementation, math, number theory	1300	x8664
1228C	Primes and Multiplication math, number theory	1700	x8665
500B	New Year Permutation dfs and similar, dsu, graphs, greedy, math, sortings	1600	x8669
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8670
1214A	Optimal Currency Exchange brute force, math	1400	x8690
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8693
810A	Straight <<A>> implementation, math	900	x8695
1658D1	388535 (Easy Version) bitmasks, math	1600	x8720
1028B	Unnatural Conditions constructive algorithms, math	1200	x8732
1921E	Eat the Chip brute force, games, greedy, math	1600	x8743
1216C	White Sheet geometry, math	1700	x8743
753A	Santa Claus and Candies dp, greedy, math	1000	x8751
1329A	Dreamoon Likes Coloring constructive algorithms, greedy, implementation, math	1800	x8753
287B	Pipeline binary search, math	1700	x8764
584D	Dima and Lisa brute force, math, number theory	1800	x8781
1612D	X-Magic Pair math, number theory	1600	x8784
1762C	Binary Strings are Fun combinatorics, math	1400	x8801
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x8826
996B	World Cup binary search, math	1300	x8835
765A	Neverending competitions implementation, math	900	x8839
1020A	New Building for SIS math	1000	x8847
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x8859
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x8863
1312D	Count the Arrays combinatorics, math	1700	x8874
490C	Hacking Cypher brute force, math, number theory, strings	1700	x8884
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x8902
1771C	Hossam and Trainees greedy, math, number theory	1600	x8908
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x8910
678C	Joty and Chocolate implementation, math, number theory	1600	x8914
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x8915
1661C	Water the Trees binary search, greedy, math	1700	x8923
1155C	Alarm Clocks Everywhere math, number theory	1300	x8941
870C	Maximum splitting dp, greedy, math, number theory	1300	x8946
920C	Swap Adjacent Elements dfs and similar, greedy, math, sortings, two pointers	1400	x8972
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x8994