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data structures
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
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geometry
graph matchings
graphs
greedy
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ternary search
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Problems
#
Name
1654E
Arithmetic Operations
brute force
,
data structures
,
graphs
,
math
2300
x1991
1919F1
Wine Factory (Easy Version)
data structures
,
greedy
2300
x2026
1783E
Game of the Year
brute force
,
data structures
,
math
,
number theory
2300
x2029
515E
Drazil and Park
data structures
2300
x2055
1834E
MEX of LCM
binary search
,
data structures
,
implementation
,
math
,
number theory
2300
x2064
1916E
Happy Life in University
data structures
,
dfs and similar
,
greedy
,
trees
2300
x2100
1251E1
Voting (Easy Version)
data structures
,
dp
,
greedy
2300
x2101
1553F
Pairwise Modulo
data structures
,
math
2300
x2104
891C
Envy
data structures
,
dsu
,
graphs
2300
x2221
1476E
Pattern Matching
bitmasks
,
data structures
,
dfs and similar
,
graphs
,
hashing
,
sortings
,
strings
2300
x2240
1385F
Removing Leaves
data structures
,
greedy
,
implementation
,
trees
2300
x2250
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2363
817F
MEX Queries
binary search
,
data structures
,
trees
2300
x2404
1658D2
388535 (Hard Version)
bitmasks
,
brute force
,
data structures
,
math
2300
x2440
1404C
Fixed Point Removal
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2300
x2493
1494D
Dogeforces
constructive algorithms
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
sortings
,
trees
2300
x2494
1528C
Trees of Tranquillity
data structures
,
dfs and similar
,
greedy
,
trees
2300
x2501
675E
Trains and Statistic
data structures
,
dp
,
greedy
2300
x2613
708C
Centroids
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2300
x2991
825E
Minimal Labels
data structures
,
dfs and similar
,
graphs
,
greedy
2300
x2998
1699D
Almost Triple Deletions
data structures
,
dp
,
greedy
2300
x3026
718C
Sasha and Array
data structures
,
math
,
matrices
2300
x3370
888G
Xor-MST
bitmasks
,
constructive algorithms
,
data structures
2300
x3887
915E
Physical Education Lessons
data structures
,
implementation
,
sortings
2300
x4009
1009F
Dominant Indices
data structures
,
dsu
,
trees
2300
x5110
786B
Legacy
data structures
,
graphs
,
shortest paths
2300
x5439
558E
A Simple Task
data structures
,
sortings
,
strings
2300
x5600
438D
The Child and Sequence
data structures
,
math
2300
x7872
600E
Lomsat gelral
data structures
,
dfs and similar
,
dsu
,
trees
2300
x12674
1488E
Palindromic Doubles
*special problem
,
data structures
,
dp
2200
x205
257E
Greedy Elevator
data structures
,
implementation
2200
x275
47E
Cannon
data structures
,
geometry
,
sortings
2200
x352
916D
Jamie and To-do List
data structures
,
interactive
,
trees
2200
x488
253E
Printer
binary search
,
data structures
,
implementation
,
sortings
2200
x522
70C
Lucky Tickets
binary search
,
data structures
,
sortings
,
two pointers
2200
x561
144E
Competition
data structures
,
greedy
2200
x562
1184C2
Heidi and the Turing Test (Medium)
data structures
2200
x597
219E
Parking Lot
data structures
2200
x602
958B2
Maximum Control (medium)
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
2200
x612
150C
Smart Cheater
data structures
,
math
,
probabilities
2200
x627
413E
Maze 2D
data structures
,
divide and conquer
2200
x664
746F
Music in Car
data structures
,
greedy
,
two pointers
2200
x723
420D
Cup Trick
data structures
2200
x768
191E
Thwarting Demonstrations
binary search
,
data structures
,
trees
2200
x805
138C
Mushroom Gnomes - 2
binary search
,
data structures
,
probabilities
,
sortings
2200
x844
387E
George and Cards
binary search
,
data structures
2200
x846
332C
Students' Revenge
data structures
,
greedy
,
sortings
2200
x884
431E
Chemistry Experiment
binary search
,
data structures
,
ternary search
2200
x901
847D
Dog Show
constructive algorithms
,
data structures
,
greedy
2200
x1013
1136E
Nastya Hasn't Written a Legend
binary search
,
data structures
2200
x1043
733F
Drivers Dissatisfaction
data structures
,
dsu
,
graphs
,
trees
2200
x1088
894D
Ralph And His Tour in Binary Country
brute force
,
data structures
,
trees
2200
x1105
1921G
Mischievous Shooter
brute force
,
data structures
,
divide and conquer
,
dp
,
implementation
2200
x1124
731D
80-th Level Archeology
brute force
,
data structures
,
greedy
,
sortings
2200
x1147
627C
Package Delivery
data structures
,
divide and conquer
,
greedy
2200
x1148
1968G2
Division + LCP (hard version)
binary search
,
brute force
,
data structures
,
dp
,
hashing
,
math
,
string suffix structures
,
strings
2200
x1238
756C
Nikita and stack
data structures
2200
x1278
762E
Radio stations
binary search
,
data structures
2200
x1282
461C
Appleman and a Sheet of Paper
data structures
,
implementation
2200
x1310
965E
Short Code
data structures
,
dp
,
greedy
,
strings
,
trees
2200
x1327
1618G
Trader Problem
data structures
,
dsu
,
greedy
,
sortings
2200
x1479
538F
A Heap of Heaps
brute force
,
data structures
,
math
,
sortings
2200
x1498
1045G
AI robots
data structures
2200
x1525
1784C
Monsters (hard version)
data structures
,
greedy
2200
x1528
490F
Treeland Tour
data structures
,
dfs and similar
,
dp
,
trees
2200
x1552
1468A
LaIS
data structures
,
dp
,
greedy
2200
x1564
1593G
Changing Brackets
constructive algorithms
,
data structures
,
dp
,
greedy
2200
x1617
1811G2
Vlad and the Nice Paths (hard version)
binary search
,
combinatorics
,
data structures
,
dp
,
math
,
two pointers
2200
x1620
1580C
Train Maintenance
brute force
,
data structures
,
implementation
2200
x1663
979D
Kuro and GCD and XOR and SUM
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
number theory
,
strings
,
trees
2200
x1684
1954E
Chain Reaction
binary search
,
data structures
,
dsu
,
greedy
,
implementation
,
math
,
number theory
2200
x1769
785E
Anton and Permutation
brute force
,
data structures
2200
x1789
980E
The Number Games
data structures
,
greedy
,
trees
2200
x1802
1194E
Count The Rectangles
bitmasks
,
brute force
,
data structures
,
geometry
,
sortings
2200
x1864
1841E
Fill the Matrix
data structures
,
greedy
,
math
2200
x1883
1795E
Explosions?
binary search
,
data structures
,
dp
,
greedy
,
math
2200
x1916
555C
Case of Chocolate
data structures
2200
x1945
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x1953
1208E
Let Them Slide
data structures
,
implementation
2200
x1960
875D
High Cry
binary search
,
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
2200
x1980
1335F
Robots on a Grid
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
matrices
2200
x1988
981E
Addition on Segments
bitmasks
,
data structures
,
divide and conquer
,
dp
2200
x1998
486E
LIS of Sequence
data structures
,
dp
,
greedy
,
hashing
,
math
2200
x2025
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2029
369E
Valera and Queries
binary search
,
data structures
2200
x2034
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x2047
1562D2
Two Hundred Twenty One (hard version)
data structures
,
math
2200
x2075
1398E
Two Types of Spells
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
2200
x2177
301D
Yaroslav and Divisors
data structures
2200
x2204
56E
Domino Principle
binary search
,
data structures
,
sortings
2200
x2211
1627E
Not Escaping
data structures
,
dp
,
implementation
,
shortest paths
,
two pointers
2200
x2235
813E
Army Creation
binary search
,
data structures
2200
x2270
1822G2
Magic Triples (Hard Version)
brute force
,
data structures
,
math
,
number theory
2200
x2310
1641C
Anonymity Is Important
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2200
x2329
1295E
Permutation Separation
data structures
,
divide and conquer
2200
x2342
1526D
Kill Anton
brute force
,
constructive algorithms
,
data structures
,
math
,
strings
2200
x2355
1616E
Lexicographically Small Enough
brute force
,
data structures
,
greedy
,
strings
2200
x2384
1557D
Ezzat and Grid
data structures
,
dp
,
greedy
2200
x2470
1788E
Sum Over Zero
data structures
,
dfs and similar
,
dp
2200
x2475
1556E
Equilibrium
data structures
,
dp
,
greedy
2200
x2514
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