Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round 945 (Div. 2)
2 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

binary search

Add tag

Problems

#	Name
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x5653
1971E	Find the Car binary search, math, sortings	1500	x8243
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x912
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1336
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3018
1968F	Equal XOR Segments binary search, data structures	1800	x3745
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x420
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x8948
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x281
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x340
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x19003
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1795
1952G	Mathematician Takeover binary search, dfs and similar, math		x926
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x45
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x199
1951B	Battle Cows binary search, data structures, greedy	1200	x12098
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x1870
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9142
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x625
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6960
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x232
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x363
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2432
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5215
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8191
1936F	Grand Finale: Circles binary search, geometry	3300	x67
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x418
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2455
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x394
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7347
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7152
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6054
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9745
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6419
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13286
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x15325
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18346
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10085
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x332
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5927
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x405
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x880
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5102
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4278
1915C	Can I Square? binary search, implementation	800	x37728
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x288
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13693
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x79
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x12010
1906D	Spaceship Exploration binary search, geometry	2800	x89
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x10683
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x12879
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x559
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5106
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x3684
1902B	Getting Points binary search, brute force, greedy	1100	x13349
1901F	Landscaping binary search, geometry, two pointers	2900	x143
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6187
1900F	Local Deletions binary search, data structures, implementation	2800	x260
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5198
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x8627
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x172
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1457
1891D	Suspicious logarithms binary search, brute force, math	1900	x3711
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11341
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x333
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x818
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1580
1887B	Time Travel binary search, graphs, shortest paths	1900	x2693
1886B	Fear of the Dark binary search, geometry, math	1200	x15200
1884B	Haunted House binary search, greedy, math, two pointers	1100	x11696
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x4887
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x9215
1881G	Anya and the Mysterious String binary search, data structures	2000	x2168
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1098
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11125
1876G	Clubstep binary search, brute force, data structures, greedy, trees	3500	x117
1876F	Indefinite Clownfish binary search, graphs	3500	x112
1873F	Money Trees binary search, greedy, math, two pointers	1300	x13895
1873E	Building an Aquarium binary search, sortings	1100	x23112
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12053
1870F	Lazy Numbers binary search, math	2900	x463
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x10747
1866L	Lihmuf Balling binary search, brute force, math	2400	x656
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x412
1866G	Grouped Carriages binary search, data structures, dp, flows, greedy	2100	x1519
1866F	Freak Joker Process binary search, data structures, sortings	3100	x120
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2659
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x5699
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16065
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x19677
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x146
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16046
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6562
1857F	Sum and Product binary search, data structures, math	1600	x10460
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11086
1854D	Michael and Hotel binary search, interactive, trees	3000	x523
1853B	Fibonaccharsis binary search, brute force, math	1200	x16537
1852A	Ntarsis' Set binary search, math, number theory	1800	x7578
1851G	Vlad and the Mountains binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers	2000	x2939

←