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Helvetic Coding Contest 2024 online mirror (teams allowed, unrated)
29:25:41
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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
842A
Kirill And The Game
brute force
,
two pointers
1200
x9957
841B
Godsend
games
,
math
1100
x11955
841A
Generous Kefa
brute force
,
implementation
900
x12917
840E
In a Trap
trees
3200
x432
840D
Destiny
data structures
,
probabilities
2500
x2767
840C
On the Bench
combinatorics
,
dp
2500
x1642
840B
Leha and another game about graph
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
graphs
2100
x2241
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
x884
839D
Winter is here
combinatorics
,
dp
,
math
,
number theory
2200
x2682
839C
Journey
dfs and similar
,
dp
,
graphs
,
probabilities
,
trees
1500
x15865
839B
Game of the Rows
brute force
,
greedy
,
implementation
1900
x3258
839A
Arya and Bran
implementation
900
x13931
838F
Expected Earnings
2800
x77
838E
Convex Countour
dp
2300
x322
838D
Airplane Arrangements
math
,
number theory
2700
x813
838C
Future Failure
dp
,
games
2800
x277
838B
Diverging Directions
data structures
,
dfs and similar
,
trees
2100
x694
838A
Binary Blocks
brute force
1400
x906
837G
Functions On The Segments
data structures
2500
x649
837F
Prefix Sums
binary search
,
brute force
,
combinatorics
,
math
,
matrices
2400
x736
837E
Vasya's Function
binary search
,
implementation
,
math
2100
x1507
837D
Round Subset
dp
,
math
2100
x4791
837C
Two Seals
brute force
,
implementation
1500
x3920
837B
Flag of Berland
brute force
,
implementation
1600
x3884
837A
Text Volume
implementation
800
x9242
835F
Roads in the Kingdom
dfs and similar
,
dp
,
graphs
,
trees
2500
x997
835E
The penguin's game
binary search
,
constructive algorithms
,
interactive
2400
x1125
835D
Palindromic characteristics
brute force
,
dp
,
hashing
,
strings
1900
x3890
835C
Star sky
dp
,
implementation
1600
x7635
835B
The number on the board
greedy
1100
x10898
835A
Key races
math
800
x19849
834B
The Festive Evening
data structures
,
implementation
1100
x8510
834A
The Useless Toy
implementation
900
x8489
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
x4484
833A
The Meaningless Game
math
,
number theory
1700
x6019
832E
Vasya and Shifts
matrices
2600
x278
832D
Misha, Grisha and Underground
dfs and similar
,
graphs
,
trees
1900
x3601
832C
Strange Radiation
binary search
,
implementation
,
math
2500
x427
832B
Petya and Exam
implementation
,
strings
1600
x4326
832A
Sasha and Sticks
games
,
math
800
x20339
831C
Jury Marks
brute force
,
constructive algorithms
1700
x4366
831B
Keyboard Layouts
implementation
,
strings
800
x14056
831A
Unimodal Array
implementation
1000
x10023
830E
Perpetual Motion Machine
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
,
trees
3100
x272
830D
Singer House
combinatorics
,
dp
,
graphs
,
trees
2800
x803
830C
Bamboo Partition
brute force
,
data structures
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2300
x1183
830B
Cards Sorting
data structures
,
implementation
,
sortings
1600
x2790
830A
Office Keys
binary search
,
brute force
,
dp
,
greedy
,
sortings
1800
x6558
828B
Black Square
implementation
1300
x5650
828A
Restaurant Tables
implementation
1200
x7791
827F
Dirty Arkady's Kitchen
data structures
,
dp
,
graphs
,
shortest paths
3200
x385
827E
Rusty String
fft
,
math
,
strings
2700
x788
827D
Best Edge Weight
data structures
,
dfs and similar
,
graphs
,
trees
2700
x1057
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
x3936
825G
Tree Queries
dfs and similar
,
graphs
,
trees
2500
x1143
825F
String Compression
dp
,
hashing
,
string suffix structures
,
strings
2400
x1322
825E
Minimal Labels
data structures
,
dfs and similar
,
graphs
,
greedy
2300
x2988
825D
Suitable Replacement
binary search
,
greedy
,
implementation
1500
x3176
825C
Multi-judge Solving
greedy
,
implementation
1600
x4352
825B
Five-In-a-Row
brute force
,
implementation
1600
x4051
825A
Binary Protocol
implementation
1100
x7531
822F
Madness
constructive algorithms
,
dfs and similar
,
trees
2500
x288
822E
Liar
binary search
,
dp
,
hashing
,
string suffix structures
2400
x754
822D
My pretty girl Noora
brute force
,
dp
,
greedy
,
math
,
number theory
1800
x2956
822C
Hacker, pack your bags!
binary search
,
greedy
,
implementation
,
sortings
1600
x4526
822B
Crossword solving
brute force
,
implementation
,
strings
1000
x9316
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31640
821E
Okabe and El Psy Kongroo
dp
,
matrices
2100
x1411
821D
Okabe and City
dfs and similar
,
graphs
,
shortest paths
2200
x1340
821C
Okabe and Boxes
data structures
,
greedy
,
trees
1500
x6604
821B
Okabe and Banana Trees
brute force
,
math
1300
x5628
821A
Okabe and Future Gadget Laboratory
implementation
800
x7937
820B
Mister B and Angle in Polygon
constructive algorithms
,
geometry
,
math
1300
x5080
820A
Mister B and Book Reading
implementation
900
x8020
819E
Mister B and Flight to the Moon
constructive algorithms
,
graphs
2800
x499
819D
Mister B and Astronomers
number theory
2900
x215
819C
Mister B and Beacons on Field
number theory
2900
x205
819B
Mister B and PR Shifts
data structures
,
implementation
,
math
1900
x1620
819A
Mister B and Boring Game
games
,
greedy
2200
x293
818G
Four Melodies
flows
,
graphs
2600
x625
818F
Level Generation
binary search
,
math
,
ternary search
2100
x1286
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x1871
818D
Multicolored Cars
data structures
,
implementation
1700
x3382
818C
Sofa Thief
brute force
,
implementation
2000
x1212
818B
Permutation Game
implementation
1600
x2957
818A
Diplomas and Certificates
implementation
,
math
800
x6778
817F
MEX Queries
binary search
,
data structures
,
trees
2300
x2395
817E
Choosing The Commander
bitmasks
,
data structures
,
trees
2000
x2686
817D
Imbalanced Array
data structures
,
divide and conquer
,
dsu
,
sortings
1900
x4388
817C
Really Big Numbers
binary search
,
brute force
,
dp
,
math
1600
x7030
817B
Makes And The Product
combinatorics
,
implementation
,
math
,
sortings
1500
x5548
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6058
816B
Karen and Coffee
binary search
,
data structures
,
implementation
1400
x16389
816A
Karen and Morning
brute force
,
implementation
1000
x8888
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