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Helvetic Coding Contest 2024 online mirror (teams allowed, unrated)
11:49:26
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Difficulty:
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two pointers
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
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Name
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4409
1252E
Songwriter
greedy
,
two pointers
2200
x1211
1251C
Minimize The Integer
greedy
,
two pointers
1600
x11661
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x18790
1250G
Discarding Game
dp
,
greedy
,
two pointers
2300
x707
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x4804
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x14688
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x10091
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3925
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x2863
1208B
Uniqueness
binary search
,
brute force
,
implementation
,
two pointers
1500
x10062
1203D2
Remove the Substring (hard version)
binary search
,
greedy
,
implementation
,
two pointers
1700
x7026
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x3919
1198A
MP3
sortings
,
two pointers
1600
x8773
1196D2
RGB Substring (hard version)
data structures
,
dp
,
implementation
,
two pointers
1600
x9315
1195E
OpenStreetMap
data structures
,
two pointers
2100
x2798
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x965
1190D
Tokitsukaze and Strange Rectangle
data structures
,
divide and conquer
,
sortings
,
two pointers
2000
x2212
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9113
1188B
Count Pairs
math
,
matrices
,
number theory
,
two pointers
2300
x4210
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2018
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x429
1168B
Good Triple
brute force
,
two pointers
1900
x3409
1167E
Range Deleting
binary search
,
combinatorics
,
data structures
,
two pointers
2100
x2499
1166C
A Tale of Two Lands
binary search
,
sortings
,
two pointers
1500
x9125
1158A
The Party and Sweets
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
,
two pointers
1500
x6840
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2515
1156E
Special Segments of Permutation
data structures
,
divide and conquer
,
dsu
,
two pointers
2200
x2747
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5890
1148E
Earth Wind and Fire
constructive algorithms
,
greedy
,
math
,
sortings
,
two pointers
2300
x1655
1148B
Born This Way
binary search
,
brute force
,
two pointers
1600
x7199
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5185
1133C
Balanced Team
sortings
,
two pointers
1200
x21264
1131G
Most Dangerous Shark
data structures
,
dp
,
two pointers
2700
x399
1120A
Diana and Liana
greedy
,
implementation
,
two pointers
1900
x1618
1107C
Brutality
greedy
,
sortings
,
two pointers
1300
x9645
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4545
1066B
Heaters
greedy
,
two pointers
1500
x8060
1060C
Maximum Subrectangle
binary search
,
implementation
,
two pointers
1600
x4802
1044A
The Tower is Going Home
binary search
,
two pointers
1700
x2846
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4367
1042D
Petya and Array
data structures
,
divide and conquer
,
two pointers
1800
x5712
1041D
Glider
binary search
,
data structures
,
two pointers
1700
x5802
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9243
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x8967
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x431
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x11982
1006C
Three Parts of the Array
binary search
,
data structures
,
two pointers
1200
x20188
989D
A Shade of Moonlight
binary search
,
geometry
,
math
,
sortings
,
two pointers
2500
x505
985E
Pencils and Boxes
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2100
x3246
978C
Letters
binary search
,
implementation
,
two pointers
1000
x24327
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x2958
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x19179
958F2
Lightsabers (medium)
binary search
,
two pointers
1800
x1199
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x1894
939E
Maximize!
binary search
,
greedy
,
ternary search
,
two pointers
1800
x3007
939C
Convenient For Everybody
binary search
,
two pointers
1600
x4561
924B
Three-level Laser
binary search
,
greedy
,
two pointers
1600
x5060
920C
Swap Adjacent Elements
dfs and similar
,
greedy
,
math
,
sortings
,
two pointers
1400
x8992
912E
Prime Gift
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
,
two pointers
2400
x1482
901C
Bipartite Segments
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2300
x1132
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x2735
895B
XK Segments
binary search
,
math
,
sortings
,
two pointers
1700
x3417
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8659
888C
K-Dominant Character
binary search
,
implementation
,
two pointers
1400
x8069
887D
Ratings and Reality Shows
data structures
,
two pointers
2400
x471
875B
Sorting the Coins
dsu
,
implementation
,
sortings
,
two pointers
1500
x5131
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3213
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2503
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1813
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2201
842A
Kirill And The Game
brute force
,
two pointers
1200
x9957
833B
The Bakery
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2200
x4487
830C
Bamboo Partition
brute force
,
data structures
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2300
x1183
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x1871
814C
An impassioned circulation of affection
brute force
,
dp
,
strings
,
two pointers
1600
x6299
799E
Aquarium decoration
data structures
,
greedy
,
two pointers
2500
x912
788A
Functions again
dp
,
two pointers
1600
x8957
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x116
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6276
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x216
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x78
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3233
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2193
762C
Two strings
binary search
,
hashing
,
strings
,
two pointers
2100
x2360
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7494
749C
Voting
greedy
,
implementation
,
two pointers
1500
x5909
748E
Santa Claus and Tangerines
binary search
,
data structures
,
greedy
,
two pointers
2100
x1440
746F
Music in Car
data structures
,
greedy
,
two pointers
2200
x722
744E
Hongcow Masters the Cyclic Shift
strings
,
two pointers
3200
x132
734C
Anton and Making Potions
binary search
,
dp
,
greedy
,
two pointers
1600
x5285
733E
Sleep in Class
constructive algorithms
,
data structures
,
math
,
two pointers
2400
x861
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3296
722F
Cyclic Cipher
chinese remainder theorem
,
data structures
,
implementation
,
number theory
,
two pointers
2800
x469
716B
Complete the Word
greedy
,
two pointers
1300
x11803
702C
Cellular Network
binary search
,
implementation
,
two pointers
1500
x13041
701C
They Are Everywhere
binary search
,
strings
,
two pointers
1500
x13712
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x119
682E
Alyona and Triangles
geometry
,
two pointers
2600
x646
676C
Vasya and String
binary search
,
dp
,
strings
,
two pointers
1500
x18081
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