Problemset - Codeforces

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Problems

#	Name
1450C2	Errich-Tac-Toe (Hard Version) constructive algorithms, math	2300	x3513
718C	Sasha and Array data structures, math, matrices	2300	x3370
1628C	Grid Xor constructive algorithms, greedy, implementation, interactive, math	2300	x3081
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x2833
1342E	Placing Rooks combinatorics, fft, math	2300	x2811
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2703
785D	Anton and School - 2 combinatorics, dp, math, number theory	2300	x2646
1182E	Product Oriented Recurrence dp, math, matrices, number theory	2300	x2525
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2517
487C	Prefix Product Sequence constructive algorithms, math, number theory	2300	x2509
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2494
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2489
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x2440
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2388
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x2342
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2296
1270E	Divide Points constructive algorithms, geometry, math	2300	x2208
1592D	Hemose in ICPC ? binary search, dfs and similar, implementation, interactive, math, number theory, trees	2300	x2159
1322C	Instant Noodles graphs, hashing, math, number theory	2300	x2143
1553F	Pairwise Modulo data structures, math	2300	x2104
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2064
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2040
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2030
1654E	Arithmetic Operations brute force, data structures, graphs, math	2300	x1991
1139D	Steps to One dp, math, number theory, probabilities	2300	x1988
1603C	Extreme Extension dp, greedy, math, number theory	2300	x1975
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1968
1768E	Partial Sorting combinatorics, math, number theory	2300	x1785
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1780
1748E	Yet Another Array Counting Problem binary search, data structures, divide and conquer, dp, flows, math, trees	2300	x1735
995C	Leaving the Bar brute force, data structures, geometry, greedy, math, sortings	2300	x1729
1042E	Vasya and Magic Matrix dp, math, probabilities	2300	x1689
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1657
1148E	Earth Wind and Fire constructive algorithms, greedy, math, sortings, two pointers	2300	x1655
1728E	Red-Black Pepper brute force, data structures, greedy, math, number theory	2300	x1650
1217E	Sum Queries? data structures, greedy, implementation, math	2300	x1641
1610E	AmShZ and G.O.A.T. binary search, brute force, greedy, implementation, math	2300	x1627
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1626
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1618
1101G	(Zero XOR Subset)-less math, matrices	2300	x1607
1204E	Natasha, Sasha and the Prefix Sums combinatorics, dp, math, number theory	2300	x1595
1167F	Scalar Queries combinatorics, data structures, math, sortings	2300	x1571
1096F	Inversion Expectation dp, math, probabilities	2300	x1564
1411E	Poman Numbers bitmasks, greedy, math, strings	2300	x1555
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1546
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1538
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1511
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1504
845G	Shortest Path Problem? dfs and similar, graphs, math	2300	x1493
1927G	Paint Charges data structures, dp, greedy, math	2300	x1492
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x1471
1276C	Beautiful Rectangle brute force, combinatorics, constructive algorithms, data structures, greedy, math	2300	x1465
1738E	Balance Addicts combinatorics, dp, math, two pointers	2300	x1456
1594E2	Rubik's Cube Coloring (hard version) brute force, dp, implementation, math, trees	2300	x1447
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1428
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1411
584E	Anton and Ira constructive algorithms, greedy, math	2300	x1397
993E	Nikita and Order Statistics chinese remainder theorem, fft, math	2300	x1361
1623D	Robot Cleaner Revisit implementation, math, probabilities	2300	x1350
1156F	Card Bag dp, math, probabilities	2300	x1331
601C	Kleofáš and the n-thlon dp, math, probabilities	2300	x1289
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1262
711E	ZS and The Birthday Paradox math, number theory, probabilities	2300	x1241
660E	Different Subsets For All Tuples combinatorics, math	2300	x1232
793C	Mice problem geometry, implementation, math, sortings	2300	x1230
938E	Max History combinatorics, math	2300	x1229
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1194
772C	Vulnerable Kerbals constructive algorithms, dp, graphs, math, number theory	2300	x1186
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1185
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1185
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1154
915G	Coprime Arrays math, number theory	2300	x1131
898F	Restoring the Expression brute force, hashing, math	2300	x1122
300E	Empire Strikes Back binary search, math, number theory	2300	x1026
1200F	Graph Traveler brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2300	x1001
768F	Barrels and boxes brute force, combinatorics, math, number theory, probabilities	2300	x998
460D	Little Victor and Set brute force, constructive algorithms, math	2300	x974
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x881
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x865
126D	Fibonacci Sums dp, math	2300	x807
1425D	Danger of Mad Snakes combinatorics, dp, math	2300	x803
1039A	Timetable constructive algorithms, data structures, greedy, math	2300	x771
596D	Wilbur and Trees dp, math, probabilities, sortings	2300	x675
167C	Wizards and Numbers games, math	2300	x657
385E	Bear in the Field math, matrices	2300	x559
316E3	Summer Homework data structures, math	2300	x504
1600F	Party Organization brute force, math, probabilities	2300	x433
37D	Lesson Timetable combinatorics, dp, math	2300	x388
42D	Strange town constructive algorithms, math	2300	x387
316E2	Summer Homework data structures, math	2300	x380
50E	Square Equation Roots math	2300	x344
180B	Divisibility Rules math, number theory	2300	x327
78D	Archer's Shot binary search, geometry, math, two pointers	2300	x302
40C	Berland Square implementation, math	2300	x239
774E	Big Number and Remainder *special problem, math, number theory	2300	x206
1346G	Two IP Cameras *special problem, math, number theory	2300	x130
446C	DZY Loves Fibonacci Numbers data structures, math, number theory	2400	x3179
932E	Team Work combinatorics, dp, math	2400	x2696
632E	Thief in a Shop divide and conquer, dp, fft, math	2400	x2573
1348E	Phoenix and Berries brute force, dp, greedy, math	2400	x1983