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Difficulty:
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dp
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
1285B
Just Eat It!
dp
,
greedy
,
implementation
1300
x21006
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x21244
1360E
Polygon
dp
,
graphs
,
implementation
,
shortest paths
1300
x24412
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x29042
189A
Cut Ribbon
brute force
,
dp
1300
x62498
1769C1
Подкрутка I
*special problem
,
brute force
,
dp
,
greedy
1200
x928
729B
Spotlights
dp
,
implementation
1200
x7732
1140D
Minimum Triangulation
dp
,
greedy
,
math
1200
x12369
998B
Cutting
dp
,
greedy
,
sortings
1200
x12743
1245B
Restricted RPS
constructive algorithms
,
dp
,
greedy
1200
x13435
1200B
Block Adventure
dp
,
greedy
1200
x13647
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x15191
522A
Reposts
*special problem
,
dfs and similar
,
dp
,
graphs
,
trees
1200
x15712
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16294
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x16394
1941D
Rudolf and the Ball Game
dfs and similar
,
dp
,
implementation
1200
x16542
1934B
Yet Another Coin Problem
brute force
,
dp
,
greedy
,
math
1200
x16594
1485B
Replace and Keep Sorted
dp
,
implementation
,
math
1200
x16654
1713C
Build Permutation
constructive algorithms
,
dp
,
math
1200
x16827
1843D
Apple Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
1200
x17028
1553C
Penalty
bitmasks
,
brute force
,
dp
,
greedy
1200
x17312
1846C
Rudolf and the Another Competition
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1200
x17938
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x18129
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x19226
1598C
Delete Two Elements
data structures
,
dp
,
implementation
,
math
,
two pointers
1200
x20036
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x22034
1926C
Vlad and a Sum of Sum of Digits
dp
,
implementation
1200
x23022
1355B
Young Explorers
dp
,
greedy
,
sortings
1200
x24871
1272C
Yet Another Broken Keyboard
combinatorics
,
dp
,
implementation
1200
x25106
1472D
Even-Odd Game
dp
,
games
,
greedy
,
sortings
1200
x26071
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x26593
1354B
Ternary String
binary search
,
dp
,
implementation
,
two pointers
1200
x29127
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36346
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x36355
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x39983
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46536
331C1
The Great Julya Calendar
dp
1100
x5933
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x8685
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x12812
1637B
MEX and Array
brute force
,
dp
,
greedy
,
math
1100
x14615
1923B
Monsters Attack!
dp
,
greedy
,
implementation
1100
x16121
1706B
Making Towers
dp
,
greedy
,
math
1100
x16214
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x17680
1946B
Maximum Sum
dp
,
greedy
,
math
1100
x17774
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17836
1478B
Nezzar and Lucky Number
brute force
,
dp
,
greedy
,
math
1100
x18033
1899C
Yarik and Array
dp
,
greedy
,
two pointers
1100
x18099
1743C
Save the Magazines
constructive algorithms
,
dp
,
greedy
1100
x18644
1631B
Fun with Even Subarrays
dp
,
greedy
1100
x19308
1917B
Erase First or Second Letter
brute force
,
combinatorics
,
data structures
,
dp
,
strings
1100
x19379
1950D
Product of Binary Decimals
brute force
,
dp
,
implementation
,
number theory
1100
x20088
1948B
Array Fix
brute force
,
dp
,
greedy
,
implementation
1100
x20400
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22507
1382B
Sequential Nim
dp
,
games
1100
x23892
1345B
Card Constructions
binary search
,
brute force
,
dp
,
math
1100
x25479
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25582
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x26875
1472C
Long Jumps
dp
,
graphs
1100
x29788
368B
Sereja and Suffixes
data structures
,
dp
1100
x39518
313B
Ilya and Queries
dp
,
implementation
1100
x41538
363B
Fence
brute force
,
dp
1100
x49178
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58402
72G
Fibonacci army
*special problem
,
dp
1000
x2047
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x8768
1566C
MAX-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
1000
x17012
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x20076
1499B
Binary Removals
brute force
,
dp
,
greedy
,
implementation
1000
x20254
1883C
Raspberries
dp
,
math
1000
x22633
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24044
1829D
Gold Rush
brute force
,
dfs and similar
,
dp
,
implementation
1000
x24183
1469B
Red and Blue
dp
,
greedy
1000
x26034
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x26345
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x27061
1182A
Filling Shapes
dp
,
math
1000
x29268
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14001
1900B
Laura and Operations
dp
,
math
900
x15967
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x16978
1501B
Napoleon Cake
dp
,
implementation
,
sortings
900
x18449
1451B
Non-Substring Subsequence
dp
,
greedy
,
implementation
,
strings
900
x19001
1709B
Also Try Minecraft
data structures
,
dp
,
implementation
900
x21843
1559B
Mocha and Red and Blue
dp
,
greedy
900
x21979
1593B
Make it Divisible by 25
dfs and similar
,
dp
,
greedy
,
math
,
math
900
x25187
1206B
Make Product Equal One
dp
,
implementation
900
x25988
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x29594
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x31074
1475B
New Year's Number
brute force
,
dp
,
math
900
x46419
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x83942
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x11384
1686B
Odd Subarrays
dp
,
greedy
800
x17899
1566B
MIN-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
800
x19095
1323A
Even Subset Sum Problem
brute force
,
dp
,
greedy
,
implementation
800
x19369
1466B
Last minute enhancements
dp
,
greedy
800
x22374
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x22763
1549B
Gregor and the Pawn Game
dfs and similar
,
dp
,
flows
,
graph matchings
,
graphs
,
greedy
,
implementation
800
x23759
1539B
Love Song
dp
,
implementation
,
strings
800
x23784
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x24202
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x26562
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x26645
1519B
The Cake Is a Lie
dp
,
math
800
x29736
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30713
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