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5 days
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brute force
combine-tags-by-or
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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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Custom test
Problems
#
Name
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24594
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24560
1703D
Double Strings
brute force
,
data structures
,
strings
1100
x24484
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24381
1607C
Minimum Extraction
brute force
,
sortings
1000
x24373
1829D
Gold Rush
brute force
,
dfs and similar
,
dp
,
implementation
1000
x24360
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x24203
1766A
Extremely Round
brute force
,
implementation
800
x24126
1676D
X-Sum
brute force
,
greedy
,
implementation
1000
x24095
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x23996
988A
Diverse Team
brute force
,
implementation
800
x23951
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23915
371C
Hamburgers
binary search
,
brute force
1600
x23762
1657A
Integer Moves
brute force
,
math
800
x23713
1822A
TubeTube Feed
brute force
,
implementation
800
x23675
1506C
Double-ended Strings
brute force
,
implementation
,
strings
1000
x23492
1395A
Boboniu Likes to Color Balls
brute force
,
math
1000
x23468
1380A
Three Indices
brute force
,
data structures
900
x23428
1795A
Two Towers
brute force
,
implementation
,
strings
800
x23267
378A
Playing with Dice
brute force
800
x23158
1614A
Divan and a Store
brute force
,
constructive algorithms
,
greedy
800
x23068
1790C
Premutation
brute force
,
implementation
,
math
1000
x23019
1770A
Koxia and Whiteboards
brute force
,
greedy
1000
x22923
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x22814
1409C
Yet Another Array Restoration
brute force
,
math
,
number theory
1200
x22763
1498A
GCD Sum
brute force
,
math
800
x22680
1617B
GCD Problem
brute force
,
constructive algorithms
,
math
,
number theory
900
x22491
1108B
Divisors of Two Integers
brute force
,
greedy
,
math
,
number theory
1100
x22470
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22461
1005B
Delete from the Left
brute force
,
implementation
,
strings
900
x22436
999A
Mishka and Contest
brute force
,
implementation
800
x22316
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22286
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x22276
1511C
Yet Another Card Deck
brute force
,
data structures
,
implementation
,
trees
1100
x22266
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x22138
1637A
Sorting Parts
brute force
,
sortings
800
x22097
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x22077
1679A
AvtoBus
brute force
,
greedy
,
math
,
number theory
900
x22033
1875A
Jellyfish and Undertale
brute force
,
greedy
900
x21993
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x21947
1176A
Divide it!
brute force
,
greedy
,
implementation
800
x21935
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x21841
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21728
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21693
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x21591
1692F
3SUM
brute force
,
math
1300
x21437
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x21386
1526C1
Potions (Easy Version)
brute force
,
data structures
,
dp
,
greedy
1500
x21286
1228A
Distinct Digits
brute force
,
implementation
800
x21260
1805A
We Need the Zero
bitmasks
,
brute force
800
x21216
1795B
Ideal Point
brute force
,
geometry
,
greedy
900
x21212
798A
Mike and palindrome
brute force
,
constructive algorithms
,
strings
1000
x21097
1680A
Minimums and Maximums
brute force
,
math
800
x21039
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x21007
22A
Second Order Statistics
brute force
800
x20973
1555C
Coin Rows
brute force
,
constructive algorithms
,
dp
,
implementation
1300
x20937
1269A
Equation
brute force
,
math
800
x20930
1485A
Add and Divide
brute force
,
greedy
,
math
,
number theory
1000
x20924
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x20882
1688A
Cirno's Perfect Bitmasks Classroom
bitmasks
,
brute force
800
x20871
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20789
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20782
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x20687
1948B
Array Fix
brute force
,
dp
,
greedy
,
implementation
1100
x20635
1950D
Product of Binary Decimals
brute force
,
dp
,
implementation
,
number theory
1100
x20570
1430A
Number of Apartments
brute force
,
constructive algorithms
,
math
900
x20481
1644B
Anti-Fibonacci Permutation
brute force
,
constructive algorithms
,
implementation
800
x20475
217A
Ice Skating
brute force
,
dfs and similar
,
dsu
,
graphs
1200
x20450
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x20439
1810A
Beautiful Sequence
brute force
,
greedy
800
x20370
1496A
Split it!
brute force
,
constructive algorithms
,
greedy
,
strings
900
x20304
1499B
Binary Removals
brute force
,
dp
,
greedy
,
implementation
1000
x20302
1020B
Badge
brute force
,
dfs and similar
,
graphs
1000
x20250
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20224
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x20200
1200A
Hotelier
brute force
,
data structures
,
implementation
800
x20064
1272A
Three Friends
brute force
,
greedy
,
math
,
sortings
900
x20063
1536A
Omkar and Bad Story
brute force
,
constructive algorithms
800
x20048
1380C
Create The Teams
brute force
,
dp
,
greedy
,
implementation
,
sortings
1400
x19937
1623A
Robot Cleaner
brute force
,
implementation
,
math
800
x19900
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x19777
1428C
ABBB
brute force
,
data structures
,
greedy
,
strings
1100
x19706
1633C
Kill the Monster
brute force
,
math
1100
x19649
550B
Preparing Olympiad
bitmasks
,
brute force
1400
x19582
66B
Petya and Countryside
brute force
,
implementation
1100
x19566
1917B
Erase First or Second Letter
brute force
,
combinatorics
,
data structures
,
dp
,
strings
1100
x19556
1476B
Inflation
binary search
,
brute force
,
greedy
,
math
1300
x19509
1352E
Special Elements
brute force
,
implementation
,
two pointers
1500
x19412
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19383
1775A1
Gardener and the Capybaras (easy version)
brute force
,
constructive algorithms
,
implementation
800
x19332
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x19232
1562B
Scenes From a Memory
brute force
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x19195
1195B
Sport Mafia
binary search
,
brute force
,
math
1000
x19165
6A
Triangle
brute force
,
geometry
900
x19138
1471B
Strange List
brute force
,
greedy
,
implementation
,
math
1100
x19134
1368B
Codeforces Subsequences
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1500
x19068
1481B
New Colony
brute force
,
greedy
,
implementation
1100
x19047
287A
IQ Test
brute force
,
implementation
1100
x18879
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x18839
1167A
Telephone Number
brute force
,
greedy
,
strings
800
x18801
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