Problemset - Codeforces

Rating changes for last rounds are temporarily rolled back. They will be returned soon. ×

→ Pay attention

Before contest
Codeforces Round 941 (Div. 1)
3 days
Register now »

*has extra registration

Before contest
Codeforces Round 941 (Div. 2)
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

meet-in-the-middle

Add tag

Problems

#	Name
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7357
1263C	Everyone is a Winner! binary search, math, meet-in-the-middle, number theory	1400	x13280
1249C2	Good Numbers (hard version) binary search, greedy, math, meet-in-the-middle	1500	x12191
1043D	Mysterious Crime brute force, combinatorics, math, meet-in-the-middle, two pointers	1700	x4366
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x2208
457A	Golden System math, meet-in-the-middle	1700	x1261
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x6567
513G1	Inversions problem brute force, dfs and similar, dp, meet-in-the-middle	1800	x1754
552C	Vanya and Scales brute force, dp, greedy, math, meet-in-the-middle, number theory	1900	x5381
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3665
490D	Chocolate brute force, dfs and similar, math, meet-in-the-middle, number theory	1900	x2069
45D	Event Dates greedy, meet-in-the-middle, sortings	1900	x1586
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1506
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4619
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2721
1593F	Red-Black Number dfs and similar, dp, implementation, math, meet-in-the-middle	2100	x2321
799D	Field expansion brute force, dp, meet-in-the-middle	2100	x1969
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2210
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1586
585D	Lizard Era: Beginning meet-in-the-middle	2300	x1573
327E	Axis Walking bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle	2300	x1339
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1926
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2400	x1469
534F	Simplified Nonogram bitmasks, dp, hashing, meet-in-the-middle	2400	x438
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x890
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x830
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x527
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x913
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x805
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x783
1423L	Light switches meet-in-the-middle	2600	x429
839E	Mother of Dragons brute force, graphs, math, meet-in-the-middle	2700	x882
995E	Number Clicker divide and conquer, graphs, meet-in-the-middle, number theory	2700	x612
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x544
1609F	Interesting Sections data structures, divide and conquer, meet-in-the-middle, two pointers	2800	x723
643F	Bears and Juice dp, math, meet-in-the-middle	2900	x673
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x518
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x300
478E	Wavy numbers brute force, dfs and similar, meet-in-the-middle, sortings	2900	x204
1558E	Down Below binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths	3000	x433
468E	Permanent dp, graph matchings, math, meet-in-the-middle	3100	x305
765G	Math, math everywhere brute force, dp, math, meet-in-the-middle, number theory	3200	x79
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x67
1601F	Two Sorts binary search, dfs and similar, math, meet-in-the-middle	3400	x167
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x99
1779H	Olympic Team Building brute force, meet-in-the-middle	3500	x130