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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
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shortest paths
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string suffix structures
strings
ternary search
trees
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Problems
#
Name
846C
Four Segments
brute force
,
data structures
,
dp
1800
x2612
846B
Math Show
brute force
,
greedy
1800
x2454
846A
Curriculum Vitae
brute force
,
implementation
1500
x4157
845G
Shortest Path Problem?
dfs and similar
,
graphs
,
math
2300
x1493
845F
Guards In The Storehouse
bitmasks
,
dp
2500
x420
845E
Fire in the City
binary search
,
data structures
2400
x579
845D
Driving Test
data structures
,
dp
,
greedy
1800
x2331
845C
Two TVs
data structures
,
greedy
,
sortings
1500
x7884
845B
Luba And The Ticket
brute force
,
greedy
,
implementation
1600
x4935
845A
Chess Tourney
implementation
,
sortings
1100
x7631
844B
Rectangles
combinatorics
,
math
1300
x6986
844A
Diversity
greedy
,
implementation
,
strings
1000
x10367
843E
Maximum Flow
flows
,
graphs
3000
x282
843D
Dynamic Shortest Path
graphs
,
shortest paths
3400
x756
843C
Upgrading Tree
constructive algorithms
,
dfs and similar
,
graphs
,
math
,
trees
2600
x346
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2136
843A
Sorting by Subsequences
dfs and similar
,
dsu
,
implementation
,
math
,
sortings
1400
x5543
842E
Nikita and game
binary search
,
dfs and similar
,
divide and conquer
,
graphs
,
trees
2800
x396
842D
Vitya and Strange Lesson
binary search
,
data structures
2000
x3219
842C
Ilya And The Tree
dfs and similar
,
graphs
,
math
,
number theory
,
trees
2000
x3412
842B
Gleb And Pizza
geometry
1100
x10050
842A
Kirill And The Game
brute force
,
two pointers
1200
x9959
841B
Godsend
games
,
math
1100
x11964
841A
Generous Kefa
brute force
,
implementation
900
x12925
840E
In a Trap
trees
3200
x432
840D
Destiny
data structures
,
probabilities
2500
x2776
840C
On the Bench
combinatorics
,
dp
2500
x1643
840B
Leha and another game about graph
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
graphs
2100
x2245
840A
Leha and Function
combinatorics
,
greedy
,
math
,
number theory
,
sortings
1300
x6953
839E
Mother of Dragons
brute force
,
graphs
,
math
,
meet-in-the-middle
2700
x886
839D
Winter is here
combinatorics
,
dp
,
math
,
number theory
2200
x2684
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x15886
839B
Game of the Rows
brute force
,
greedy
,
implementation
1900
x3258
839A
Arya and Bran
implementation
900
x13937
838F
Expected Earnings
2800
x77
838E
Convex Countour
dp
2300
x322
838D
Airplane Arrangements
math
,
number theory
2700
x816
838C
Future Failure
dp
,
games
2800
x278
838B
Diverging Directions
data structures
,
dfs and similar
,
trees
2100
x695
838A
Binary Blocks
brute force
1400
x906
837G
Functions On The Segments
data structures
2500
x650
837F
Prefix Sums
binary search
,
brute force
,
combinatorics
,
math
,
matrices
2400
x738
837E
Vasya's Function
binary search
,
implementation
,
math
2100
x1509
837D
Round Subset
dp
,
math
2100
x4804
837C
Two Seals
brute force
,
implementation
1500
x3924
837B
Flag of Berland
brute force
,
implementation
1600
x3884
837A
Text Volume
implementation
800
x9244
835F
Roads in the Kingdom
dfs and similar
,
dp
,
graphs
,
trees
2500
x998
835E
The penguin's game
binary search
,
constructive algorithms
,
interactive
2400
x1126
835D
Palindromic characteristics
brute force
,
dp
,
hashing
,
strings
1900
x3902
835C
Star sky
dp
,
implementation
1600
x7642
835B
The number on the board
greedy
1100
x10901
835A
Key races
math
800
x19936
834B
The Festive Evening
data structures
,
implementation
1100
x8513
834A
The Useless Toy
implementation
900
x8492
833E
Caramel Clouds
data structures
,
dp
,
sortings
3400
x210
833D
Red-Black Cobweb
data structures
,
divide and conquer
,
implementation
,
trees
2800
x371
833C
Ever-Hungry Krakozyabra
brute force
,
combinatorics
,
greedy
,
math
2700
x460
833B
The Bakery
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2200
x4493
833A
The Meaningless Game
math
,
number theory
1700
x6024
832E
Vasya and Shifts
matrices
2600
x278
832D
Misha, Grisha and Underground
dfs and similar
,
graphs
,
trees
1900
x3604
832C
Strange Radiation
binary search
,
implementation
,
math
2500
x427
832B
Petya and Exam
implementation
,
strings
1600
x4326
832A
Sasha and Sticks
games
,
math
800
x20348
831C
Jury Marks
brute force
,
constructive algorithms
1700
x4371
831B
Keyboard Layouts
implementation
,
strings
800
x14062
831A
Unimodal Array
implementation
1000
x10031
830E
Perpetual Motion Machine
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
,
trees
3100
x272
830D
Singer House
combinatorics
,
dp
,
graphs
,
trees
2800
x804
830C
Bamboo Partition
brute force
,
data structures
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2300
x1183
830B
Cards Sorting
data structures
,
implementation
,
sortings
1600
x2792
830A
Office Keys
binary search
,
brute force
,
dp
,
greedy
,
sortings
1800
x6566
828B
Black Square
implementation
1300
x5650
828A
Restaurant Tables
implementation
1200
x7793
827F
Dirty Arkady's Kitchen
data structures
,
dp
,
graphs
,
shortest paths
3200
x385
827E
Rusty String
fft
,
math
,
strings
2700
x791
827D
Best Edge Weight
data structures
,
dfs and similar
,
graphs
,
trees
2700
x1062
827C
DNA Evolution
data structures
,
strings
2100
x1612
827B
High Load
constructive algorithms
,
greedy
,
implementation
,
trees
1800
x3435
827A
String Reconstruction
data structures
,
greedy
,
sortings
,
strings
1700
x3937
825G
Tree Queries
dfs and similar
,
graphs
,
trees
2500
x1143
825F
String Compression
dp
,
hashing
,
string suffix structures
,
strings
2400
x1326
825E
Minimal Labels
data structures
,
dfs and similar
,
graphs
,
greedy
2300
x2994
825D
Suitable Replacement
binary search
,
greedy
,
implementation
1500
x3178
825C
Multi-judge Solving
greedy
,
implementation
1600
x4356
825B
Five-In-a-Row
brute force
,
implementation
1600
x4051
825A
Binary Protocol
implementation
1100
x7533
822F
Madness
constructive algorithms
,
dfs and similar
,
trees
2500
x288
822E
Liar
binary search
,
dp
,
hashing
,
string suffix structures
2400
x760
822D
My pretty girl Noora
brute force
,
dp
,
greedy
,
math
,
number theory
1800
x2960
822C
Hacker, pack your bags!
binary search
,
greedy
,
implementation
,
sortings
1600
x4529
822B
Crossword solving
brute force
,
implementation
,
strings
1000
x9317
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31679
821E
Okabe and El Psy Kongroo
dp
,
matrices
2100
x1415
821D
Okabe and City
dfs and similar
,
graphs
,
shortest paths
2200
x1341
821C
Okabe and Boxes
data structures
,
greedy
,
trees
1500
x6620
821B
Okabe and Banana Trees
brute force
,
math
1300
x5637
821A
Okabe and Future Gadget Laboratory
implementation
800
x7939
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5081
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