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When submitting a solution in C++, please select either C++14 (GCC 6-32) or C++17 (GCC 7-32) as your compiler.
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Codeforces Round 935 (Div. 3)
03:37:22
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Difficulty:
—
sortings
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
#
Name
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x4194
1940D
Almost Certainly
*special problem
,
constructive algorithms
,
data structures
,
sortings
x94
1940C
Burenka and Pether
*special problem
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
x20
1940B
Three Arrays
*special problem
,
constructive algorithms
,
implementation
,
sortings
x140
1936C
Pokémon Arena
data structures
,
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
2400
x862
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x6156
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x16153
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x33228
1932F
Feed Cats
data structures
,
dp
,
sortings
1900
x2789
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x12258
1930C
Lexicographically Largest
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
1700
x5941
1930A
Maximise The Score
greedy
,
sortings
800
x15962
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x27605
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x14198
1927F
Microcycle
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
1900
x3468
1924B
Space Harbour
data structures
,
implementation
,
math
,
sortings
2100
x2138
1922B
Forming Triangles
combinatorics
,
constructive algorithms
,
math
,
sortings
1200
x18337
1921D
Very Different Array
data structures
,
greedy
,
sortings
,
two pointers
1100
x19267
1920B
Summation Game
games
,
greedy
,
math
,
sortings
1100
x18604
1919D
01 Tree
constructive algorithms
,
data structures
,
dsu
,
greedy
,
sortings
,
trees
2100
x3477
1918F
Caterpillar on a Tree
dfs and similar
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
2500
x687
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1398
1918B
Minimize Inversions
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
900
x21292
1915G
Bicycles
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
1800
x5078
1915F
Greetings
data structures
,
divide and conquer
,
sortings
1500
x10756
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x10725
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x10667
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x16849
1912A
Accumulator Apex
data structures
,
implementation
,
sortings
1900
x1667
1909C
Heavy Intervals
constructive algorithms
,
data structures
,
dsu
,
greedy
,
math
,
sortings
1400
x9493
1907F
Shift and Reverse
greedy
,
sortings
1800
x4177
1906F
Maximize The Value
data structures
,
sortings
2100
x856
1904D2
Set To Max (Hard Version)
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
sortings
1800
x3557
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x9730
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x11934
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x21037
1901E
Compressed Tree
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
2200
x1301
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x2762
1899E
Queue Sort
greedy
,
implementation
,
sortings
1300
x13344
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x1970
1896G
Pepe Racing
constructive algorithms
,
implementation
,
interactive
,
sortings
3200
x214
1896E
Permutation Sorting
data structures
,
sortings
2100
x1916
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x8164
1896A
Jagged Swaps
sortings
800
x16255
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1411
1895B
Points and Minimum Distance
greedy
,
math
,
sortings
800
x19333
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x7764
1891E
Brukhovich and Exams
brute force
,
greedy
,
implementation
,
math
,
sortings
2500
x755
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x10643
1891B
Deja Vu
brute force
,
math
,
sortings
1100
x14987
1891A
Sorting with Twos
constructive algorithms
,
sortings
800
x18069
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x2889
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x6494
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1285
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x5177
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4677
1876C
Autosynthesis
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
sortings
2100
x2069
1876B
Effects of Anti Pimples
combinatorics
,
number theory
,
sortings
1500
x7195
1876A
Helmets in Night Light
greedy
,
sortings
1000
x13696
1873E
Building an Aquarium
binary search
,
sortings
1100
x21710
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x6215
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x13768
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x18940
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x108
1864F
Exotic Queries
data structures
,
implementation
,
sortings
2300
x1283
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2427
1864B
Swap and Reverse
constructive algorithms
,
greedy
,
sortings
,
strings
1100
x14566
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2551
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14312
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2559
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19229
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x258
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6366
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x23265
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x3935
1857E
Power of Points
math
,
sortings
1500
x11171
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17077
1857C
Assembly via Minimums
greedy
,
sortings
1200
x21900
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4007
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2806
1851E
Nastya and Potions
dfs and similar
,
dp
,
graphs
,
sortings
1500
x9108
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x27466
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x10800
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x30446
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x39012
1850A
To My Critics
implementation
,
sortings
800
x48612
1849B
Monsters
greedy
,
math
,
sortings
1000
x21510
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x12780
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x834
1847A
The Man who became a God
greedy
,
sortings
800
x21400
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x17531
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x361
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32280
1842F
Tenzing and Tree
dfs and similar
,
greedy
,
shortest paths
,
sortings
,
trees
2500
x1210
1841F
Monocarp and a Strategic Game
geometry
,
sortings
,
two pointers
2700
x457
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4009
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x12465
1839D
Ball Sorting
data structures
,
dp
,
sortings
2100
x2123
1839B
Lamps
greedy
,
sortings
1100
x14290
1836A
Destroyer
implementation
,
sortings
800
x19490
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