Problemset - Codeforces

→ Pay attention

Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
12 days
Register now »

Contest is running
Kotlin Heroes: Practice 10
5 days
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1972B	Coin Games games		x12786
1972A	Contest Proposal brute force, greedy, two pointers		x14557
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees		x141
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees		x263
1970G1	Min-Fund Prison (Easy) dfs and similar, trees		x512
1970F3	Playing Quidditch (Hard) implementation		x192
1970F2	Playing Quidditch (Medium) implementation		x200
1970F1	Playing Quidditch (Easy) implementation		x266
1970E3	Trails (Hard) dp, matrices		x295
1970E2	Trails (Medium) dp, matrices		x476
1970E1	Trails (Easy) dp		x641
1970D3	Arithmancy (Hard) interactive		x36
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings		x95
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings		x324
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees		x548
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees		x804
1970C1	Game on Tree (Easy) games		x1024
1970B3	Exact Neighbours (Hard) constructive algorithms		x250
1970B2	Exact Neighbours (Medium) constructive algorithms		x382
1970B1	Exact Neighbours (Easy) constructive algorithms		x518
1970A3	Balanced Unshuffle (Hard) constructive algorithms, trees		x260
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees		x272
1970A1	Balanced Shuffle (Easy) implementation, sortings		x1507
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x97
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x790
1969D	Shop Game data structures, greedy, math, sortings	1900	x2907
1969C	Minimizing the Sum dp, implementation	1700	x5381
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x12923
1969A	Two Friends constructive algorithms, implementation, math	800	x14582
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings		x1139
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings		x2616
1968F	Equal XOR Segments binary search, data structures		x3128
1968E	Cells Arrangement constructive algorithms		x6573
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math		x9954
1968C	Assembly via Remainders constructive algorithms, number theory		x16860
1968B	Prefiquence greedy, two pointers		x20612
1968A	Maximize? brute force, math, number theory		x24080
1967F	Next and Prev brute force, data structures, implementation		x21
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math		x44
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math		x107
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers		x360
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees		x1125
1967B2	Reverse Card (Hard Version) brute force, math, number theory		x2694
1967B1	Reverse Card (Easy Version) brute force, math, number theory		x8651
1967A	Permutation Counting binary search, greedy, implementation, math, sortings		x7994
1966B	Rectangle Filling constructive algorithms, implementation	1100	x10593
1966A	Card Exchange constructive algorithms, games, greedy	800	x13587
1965F	Conference data structures, flows	3300	x62
1965E	Connected Cubes constructive algorithms, games	3100	x156
1965D	Missing Subarray Sum constructive algorithms	2900	x240
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1328
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x4649
1965A	Everything Nim games, greedy, math, sortings	1400	x9321
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x263
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x325
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x965
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3450
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x7278
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14472
1957A	Stickogon constructive algorithms, greedy	800	x19370
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x248
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x639
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1179
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3099
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x10395
1956B	Nene and the Card Game games, greedy	800	x18504
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x18581
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x990
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3380
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5781
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7016
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x12629
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x17532
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x23509
1955A	Yogurt Sale math	800	x35973
1954F	Unique Strings combinatorics, dp, math	3100	x196
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1738
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4788
1954C	Long Multiplication greedy, math, number theory	1200	x15377
1954B	Make It Ugly implementation, math	1200	x15149
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x20078
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x688
1952I	Dark Matter bitmasks, geometry		x342
1952H	Palindrome implementation, strings		x348
1952G	Mathematician Takeover binary search, dfs and similar, math		x918
1952F	Grid brute force		x1634
1952E	Sweep Line combinatorics, games, math		x207
1952D	Are You a Procrastinator? implementation		x4129
1952C	They Have Fooled brute force, schedules		x2709
1952B	Is it stated? strings		x10264
1952A	Are You a Robot, Again? strings		x11334
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x42
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x194
1951G	Clacking Balls combinatorics, math, probabilities	3100	x247
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x646
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2975
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4635
1951C	Ticket Hoarding greedy, math, sortings	1400	x9478
1951B	Battle Cows binary search, data structures, greedy	1200	x11866
1951A	Dual Trigger constructive algorithms, greedy, math	900	x16249

←