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2024-2025 ICPC, NERC, Southern and Volga Russian Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams)
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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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Custom test
Problems
#
Name
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3276
873B
Balanced Substring
dp
,
implementation
1500
x7842
873A
Chores
implementation
800
x8280
871E
Restore the Tree
graphs
,
greedy
,
trees
2900
x149
870F
Paths
data structures
,
number theory
2700
x619
870E
Points, Lines and Ready-made Titles
dfs and similar
,
dsu
,
graphs
,
trees
2300
x1236
870D
Something with XOR Queries
brute force
,
interactive
,
probabilities
2000
x1232
870C
Maximum splitting
dp
,
greedy
,
math
,
number theory
1300
x9224
870B
Maximum of Maximums of Minimums
greedy
1200
x9590
870A
Search for Pretty Integers
brute force
,
implementation
900
x10201
869E
The Untended Antiquity
data structures
,
hashing
2400
x1773
869D
The Overdosing Ubiquity
brute force
,
dfs and similar
,
graphs
2800
x250
869C
The Intriguing Obsession
combinatorics
,
dp
,
math
1800
x4727
869B
The Eternal Immortality
math
1100
x13744
869A
The Artful Expedient
brute force
,
implementation
1100
x9467
868G
El Toll Caves
math
3300
x133
868F
Yet Another Minimization Problem
divide and conquer
,
dp
2500
x3845
868E
Policeman and a Tree
dp
,
graphs
,
trees
2700
x518
868D
Huge Strings
bitmasks
,
brute force
,
dp
,
implementation
,
strings
2200
x924
868C
Qualification Rounds
bitmasks
,
brute force
,
constructive algorithms
,
dp
1500
x4632
868B
Race Against Time
implementation
1400
x3684
868A
Bark to Unlock
brute force
,
implementation
,
strings
900
x8717
867A
Between the Offices
implementation
800
x19357
865G
Flowers and Chocolate
combinatorics
,
math
,
matrices
3300
x136
865F
Egg Roulette
bitmasks
,
brute force
,
divide and conquer
,
math
,
meet-in-the-middle
3300
x68
865E
Hex Dyslexia
bitmasks
,
brute force
,
dp
,
graphs
3300
x138
865D
Buy Low Sell High
constructive algorithms
,
data structures
,
greedy
2400
x5704
865C
Gotta Go Fast
binary search
,
dp
2400
x847
865B
Ordering Pizza
binary search
,
sortings
,
ternary search
1900
x1867
865A
Save the problem!
constructive algorithms
1400
x4332
864F
Cities Excursions
dfs and similar
,
graphs
,
trees
2700
x620
864E
Fire
dp
,
sortings
2000
x4272
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x6010
864C
Bus
greedy
,
implementation
,
math
1500
x5863
864B
Polycarp and Letters
brute force
,
implementation
,
strings
1000
x9156
864A
Fair Game
implementation
,
sortings
1000
x11668
863G
Graphic Settings
3200
x56
863F
Almost Permutation
flows
2200
x1262
863E
Turn Off The TV
data structures
,
sortings
2000
x3159
863D
Yet Another Array Queries Problem
data structures
,
implementation
1800
x3293
863C
1-2-3
graphs
,
implementation
1800
x2514
863B
Kayaking
brute force
,
greedy
,
sortings
1500
x8399
863A
Quasi-palindrome
brute force
,
implementation
900
x10254
862F
Mahmoud and Ehab and the final stage
data structures
,
strings
2900
x210
862E
Mahmoud and Ehab and the function
binary search
,
data structures
,
sortings
2100
x1666
862D
Mahmoud and Ehab and the binary string
binary search
,
divide and conquer
,
interactive
2000
x1888
862C
Mahmoud and Ehab and the xor
constructive algorithms
1900
x4098
862B
Mahmoud and Ehab and the bipartiteness
dfs and similar
,
graphs
,
trees
1300
x18236
862A
Mahmoud and Ehab and the MEX
greedy
,
implementation
1000
x9548
860E
Arkady and a Nobody-men
data structures
,
dfs and similar
,
trees
2700
x439
859G
Circle of Numbers
math
3000
x159
859F
Ordering T-Shirts
greedy
2800
x185
859E
Desk Disorder
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x1867
859D
Third Month Insanity
dp
,
probabilities
,
trees
2100
x1052
859C
Pie Rules
dp
,
games
1500
x5430
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x7060
859A
Declined Finalists
greedy
,
implementation
800
x7742
858F
Wizard's Tour
constructive algorithms
,
dfs and similar
,
graphs
2300
x1625
858E
Tests Renumeration
greedy
,
implementation
2200
x510
858D
Polycarp's phone book
data structures
,
implementation
,
sortings
1600
x3848
858C
Did you mean...
dp
,
greedy
,
implementation
1500
x5635
858B
Which floor?
brute force
,
implementation
1500
x3746
858A
k-rounding
brute force
,
math
,
number theory
1100
x8060
856F
To Play or not to Play
greedy
3000
x104
856E
Satellites
3100
x71
856D
Masha and Cactus
dp
,
trees
2400
x408
856C
Eleventh Birthday
combinatorics
,
dp
,
math
2400
x623
856B
Similar Words
dp
,
hashing
,
strings
,
trees
2300
x512
856A
Set Theory
brute force
,
constructive algorithms
1600
x1442
855G
Harry Vs Voldemort
dfs and similar
,
dp
,
graphs
,
trees
3300
x221
855F
Nagini
binary search
,
data structures
3100
x458
855E
Salazar Slytherin's Locket
bitmasks
,
dp
2200
x1796
855D
Rowena Ravenclaw's Diadem
trees
2500
x527
855C
Helga Hufflepuff's Cup
dp
,
trees
2000
x2089
855B
Marvolo Gaunt's Ring
brute force
,
data structures
,
dp
1500
x8722
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x22001
854B
Maxim Buys an Apartment
constructive algorithms
,
math
1200
x8196
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13650
853E
Lada Malina
data structures
,
geometry
3400
x66
853D
Michael and Charging Stations
binary search
,
dp
,
greedy
2400
x672
853C
Boredom
data structures
2100
x1508
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2532
853A
Planning
greedy
1500
x5858
852I
Dating
brute force
,
dfs and similar
,
graphs
,
trees
2300
x581
852H
Bob and stages
dp
,
geometry
3000
x152
852G
Bathroom terminal
implementation
1700
x1290
852F
Product transformation
combinatorics
,
math
,
number theory
2200
x577
852E
Casinos and travel
dp
2100
x1061
852D
Exploration plan
binary search
,
flows
,
graph matchings
,
shortest paths
2100
x1000
852C
Property
greedy
,
sortings
2100
x600
852B
Neural Network country
dp
,
matrices
2000
x1464
852A
Digits
brute force
,
implementation
,
math
2500
x389
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5561
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9785
850F
Rainbow Balls
math
2800
x668
850E
Random Elections
bitmasks
,
brute force
,
divide and conquer
,
fft
,
math
2800
x401
850D
Tournament Construction
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
2800
x393
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2200
x1507
850B
Arpa and a list of numbers
implementation
,
number theory
2100
x2030
850A
Five Dimensional Points
brute force
,
geometry
,
math
1700
x3212
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