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data structures
combine-tags-by-or
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2-sat
binary search
bitmasks
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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
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probabilities
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strings
ternary search
trees
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Custom test
Problems
#
Name
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x14034
348C
Subset Sums
brute force
,
data structures
2500
x2220
343D
Water Tree
data structures
,
dfs and similar
,
graphs
,
trees
2100
x5868
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x14033
342E
Xenia and Tree
data structures
,
divide and conquer
,
trees
2400
x8591
341D
Iahub and Xors
data structures
2500
x1238
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7254
339D
Xenia and Bit Operations
data structures
,
trees
1700
x26081
338E
Optimize!
data structures
2600
x1001
332C
Students' Revenge
data structures
,
greedy
,
sortings
2200
x916
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x8056
331D3
Escaping on Beaveractor
data structures
,
implementation
,
trees
3000
x178
331B2
Shave Beaver!
data structures
1900
x726
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1423
323C
Two permutations
data structures
2400
x600
321E
Ciel and Gondolas
data structures
,
divide and conquer
,
dp
2600
x5053
319E
Ping-Pong
data structures
3000
x662
319B
Psychos in a Line
data structures
,
implementation
1900
x4191
316E3
Summer Homework
data structures
,
math
2300
x533
316E2
Summer Homework
data structures
,
math
2300
x400
316E1
Summer Homework
brute force
,
data structures
1500
x1486
314D
Sereja and Straight Lines
binary search
,
data structures
,
geometry
,
sortings
,
two pointers
2500
x527
314C
Sereja and Subsequences
data structures
,
dp
2000
x1840
313E
Ilya and Two Numbers
constructive algorithms
,
data structures
,
dsu
,
greedy
2300
x554
311D
Interval Cubing
data structures
,
math
2600
x673
311C
Fetch the Treasure
brute force
,
data structures
,
graphs
,
shortest paths
2500
x486
311B
Cats Transport
data structures
,
dp
2400
x3490
306B
Optimizer
data structures
,
greedy
,
sortings
2100
x445
301D
Yaroslav and Divisors
data structures
2200
x2413
297E
Mystic Carvings
data structures
3000
x376
295E
Yaroslav and Points
data structures
2500
x688
295A
Greg and Array
data structures
,
implementation
1400
x18284
293E
Close Vertices
data structures
,
divide and conquer
,
trees
2700
x1463
292E
Copying Data
data structures
1900
x4181
292D
Connected Components
data structures
,
dfs and similar
,
dp
,
dsu
1900
x2449
286D
Tourists
data structures
,
sortings
2600
x379
283E
Cow Tennis Tournament
combinatorics
,
data structures
,
math
2800
x777
283A
Cows and Sequence
constructive algorithms
,
data structures
,
implementation
1600
x6585
282E
Sausage Maximization
bitmasks
,
data structures
,
trees
2200
x3641
280E
Sequence Transformation
brute force
,
data structures
,
dp
,
implementation
,
math
3000
x207
280D
k-Maximum Subsequence Sum
data structures
,
flows
,
graphs
,
implementation
2800
x1320
280B
Maximum Xor Secondary
data structures
,
implementation
,
two pointers
1800
x4741
276E
Little Girl and Problem on Trees
data structures
,
graphs
,
trees
2100
x1617
276C
Little Girl and Maximum Sum
data structures
,
greedy
,
implementation
,
sortings
1500
x27227
274E
Mirror Room
data structures
,
implementation
3000
x313
272C
Dima and Staircase
data structures
,
implementation
1500
x6805
271D
Good Substrings
data structures
,
strings
1800
x11493
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4184
269D
Maximum Waterfall
data structures
,
dp
,
graphs
,
sortings
2600
x451
266E
More Queries to Array...
data structures
,
math
2500
x930
264E
Roadside Trees
data structures
,
dp
3000
x436
264A
Escape from Stones
constructive algorithms
,
data structures
,
implementation
,
two pointers
1200
x10823
263E
Rhombus
brute force
,
data structures
,
dp
2500
x402
260E
Dividing Kingdom
binary search
,
brute force
,
data structures
2500
x459
258E
Little Elephant and Tree
data structures
,
dfs and similar
,
trees
2400
x1130
257E
Greedy Elevator
data structures
,
implementation
2200
x294
256E
Lucky Arrays
data structures
2400
x668
253E
Printer
binary search
,
data structures
,
implementation
,
sortings
2200
x530
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2616
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x462
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x3371
243E
Matrix
data structures
3000
x192
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x215
242E
XOR on Segment
bitmasks
,
data structures
2000
x9422
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x818
240F
TorCoder
data structures
2600
x1968
238D
Tape Programming
data structures
,
implementation
2900
x251
235C
Cyclical Quest
data structures
,
string suffix structures
,
strings
2700
x2148
232D
Fence
binary search
,
data structures
,
string suffix structures
2900
x475
231E
Cactus
data structures
,
dfs and similar
,
dp
,
graphs
,
trees
2100
x1908
229B
Planets
binary search
,
data structures
,
graphs
,
shortest paths
1700
x4726
228D
Zigzag
data structures
2100
x386
226E
Noble Knight's Path
data structures
,
trees
2900
x462
226C
Anniversary
data structures
,
implementation
,
math
,
matrices
,
number theory
2400
x914
223B
Two Strings
data structures
,
dp
,
strings
1900
x1816
223A
Bracket Sequence
data structures
,
expression parsing
,
implementation
1700
x2541
222B
Cosmic Tables
data structures
,
implementation
1300
x6137
220E
Little Elephant and Inversions
data structures
,
two pointers
2400
x1416
220C
Little Elephant and Shifts
data structures
2100
x945
220B
Little Elephant and Array
constructive algorithms
,
data structures
1800
x10411
219E
Parking Lot
data structures
2200
x620
217E
Alien DNA
data structures
,
dsu
,
trees
2800
x325
213E
Two Permutations
data structures
,
hashing
,
strings
2700
x836
212D
Cutting a Fence
binary search
,
data structures
,
dsu
2500
x519
208E
Blood Cousins
binary search
,
data structures
,
dfs and similar
,
trees
2100
x6929
207C3
Game with Two Trees
data structures
2700
x134
204E
Little Elephant and Strings
data structures
,
implementation
,
string suffix structures
,
two pointers
2800
x1171
204B
Little Elephant and Cards
binary search
,
data structures
1500
x5275
200A
Cinema
brute force
,
data structures
2400
x687
198E
Gripping Story
binary search
,
data structures
,
sortings
2400
x421
196D
The Next Good String
data structures
,
greedy
,
hashing
,
strings
2800
x541
195E
Building Forest
data structures
,
dsu
,
graphs
2000
x724
195B
After Training
data structures
,
implementation
,
math
1300
x5210
193D
Two Segments
data structures
2900
x537
191E
Thwarting Demonstrations
binary search
,
data structures
,
trees
2200
x856
191C
Fools and Roads
data structures
,
dfs and similar
,
trees
1900
x7304
190E
Counter Attack
data structures
,
dsu
,
graphs
,
hashing
,
sortings
2100
x1553
187E
Heaven Tour
data structures
,
greedy
2900
x104
187D
BRT Contract
data structures
2800
x537
185E
Soap Time! - 2
binary search
,
data structures
3000
x143
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