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2024-2025 ICPC, NERC, Southern and Volga Russian Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams)
38:48:05
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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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Problems
#
Name
1987F1
Interesting Problem (Easy Version)
dp
2500
x1118
1987E
Wonderful Tree!
brute force
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
2000
x3389
1987D
World is Mine
dp
,
games
1800
x7152
1987C
Basil's Garden
dp
,
greedy
1200
x17312
1987B
K-Sort
greedy
1000
x20418
1987A
Upload More RAM
greedy
,
math
800
x25308
1986G2
Permutation Problem (Hard Version)
brute force
,
data structures
,
hashing
,
math
,
number theory
2500
x1084
1986G1
Permutation Problem (Simple Version)
binary search
,
brute force
,
combinatorics
,
data structures
,
math
,
number theory
2200
x1491
1986F
Non-academic Problem
dfs and similar
,
graphs
,
trees
1900
x4554
1986E
Beautiful Array
greedy
,
math
,
number theory
,
sortings
1700
x8799
1986D
Mathematical Problem
brute force
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1400
x15192
1986C
Update Queries
data structures
,
greedy
,
sortings
1100
x22811
1986B
Matrix Stabilization
brute force
,
data structures
,
greedy
,
sortings
1000
x26564
1986A
X Axis
brute force
,
geometry
,
math
,
sortings
800
x40400
1985H2
Maximize the Largest Component (Hard Version)
data structures
,
dfs and similar
,
dp
,
dsu
,
implementation
2200
x1526
1985H1
Maximize the Largest Component (Easy Version)
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
1700
x5591
1985G
D-Function
combinatorics
,
math
,
number theory
1600
x9377
1985F
Final Boss
binary search
,
data structures
1500
x15303
1985E
Secret Box
brute force
,
combinatorics
,
math
1200
x19888
1985D
Manhattan Circle
implementation
,
math
900
x34501
1985C
Good Prefixes
greedy
1000
x32309
1985B
Maximum Multiple Sum
brute force
,
math
,
number theory
800
x46217
1985A
Creating Words
implementation
,
strings
800
x53656
1984H
Tower Capturing
combinatorics
,
dp
,
geometry
3300
x168
1984G
Magic Trick II
constructive algorithms
,
implementation
,
sortings
3200
x259
1984F
Reconstruction
brute force
,
dp
,
math
2500
x938
1984E
Shuffle
dp
,
greedy
,
trees
2400
x1398
1984D
''a'' String Problem
brute force
,
hashing
,
implementation
,
math
,
string suffix structures
,
strings
2000
x3280
1984C2
Magnitude (Hard Version)
combinatorics
,
dp
,
greedy
,
math
1700
x7398
1984C1
Magnitude (Easy Version)
dp
,
greedy
,
math
1300
x16625
1984B
Large Addition
implementation
,
math
1100
x18283
1984A
Strange Splitting
constructive algorithms
800
x21135
1983G
Your Loss
bitmasks
,
brute force
,
dp
,
trees
3000
x210
1983F
array-value
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
2500
x1194
1983E
I Love Balls
combinatorics
,
math
,
probabilities
2300
x2002
1983D
Swap Dilemma
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
math
,
sortings
1700
x8188
1983C
Have Your Cake and Eat It Too
binary search
,
brute force
,
greedy
,
implementation
1400
x12530
1983B
Corner Twist
constructive algorithms
,
greedy
,
implementation
,
math
1200
x16085
1983A
Array Divisibility
constructive algorithms
,
math
800
x25613
1982F
Sorting Problem Again
binary search
,
data structures
,
sortings
2600
x952
1982E
Number of k-good subarrays
bitmasks
,
brute force
,
combinatorics
,
divide and conquer
,
dp
,
math
,
meet-in-the-middle
2300
x1596
1982D
Beauty of the mountains
brute force
,
data structures
,
implementation
,
math
,
number theory
1700
x7145
1982C
Boring Day
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1200
x17519
1982B
Collatz Conjecture
brute force
,
implementation
,
math
,
number theory
1200
x16941
1982A
Soccer
greedy
,
implementation
,
math
,
sortings
800
x25101
1981F
Turtle and Paths on a Tree
data structures
,
dp
,
trees
3000
x272
1981E
Turtle and Intersected Segments
data structures
,
dsu
,
graphs
,
greedy
2600
x902
1981D
Turtle and Multiplication
constructive algorithms
,
dfs and similar
,
graphs
,
number theory
2400
x1662
1981C
Turtle and an Incomplete Sequence
bitmasks
,
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
1800
x5326
1981B
Turtle and an Infinite Sequence
bitmasks
,
math
1300
x13724
1981A
Turtle and Piggy Are Playing a Game
brute force
,
greedy
,
math
800
x22273
1980G
Yasya and the Mysterious Tree
bitmasks
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
strings
,
trees
2300
x1245
1980F2
Field Division (hard version)
math
,
sortings
2400
x995
1980F1
Field Division (easy version)
data structures
,
math
,
sortings
1900
x3738
1980E
Permutation of Rows and Columns
constructive algorithms
,
data structures
,
greedy
,
hashing
,
implementation
,
math
,
matrices
,
sortings
1600
x10501
1980D
GCD-sequence
greedy
,
implementation
,
math
,
number theory
1400
x14286
1980C
Sofia and the Lost Operations
constructive algorithms
,
greedy
1300
x18598
1980B
Choosing Cubes
sortings
,
sortings
800
x34665
1980A
Problem Generator
math
800
x40600
1979F
Kostyanych's Theorem
brute force
,
constructive algorithms
,
graphs
,
interactive
2900
x315
1979E
Manhattan Triangle
binary search
,
constructive algorithms
,
data structures
,
geometry
,
implementation
,
two pointers
2400
x1441
1979D
Fixing a Binary String
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
1800
x6628
1979C
Earning on Bets
binary search
,
combinatorics
,
constructive algorithms
,
number theory
1200
x18760
1979B
XOR Sequences
bitmasks
,
greedy
1000
x22586
1979A
Guess the Maximum
brute force
,
greedy
,
implementation
800
x29021
1978F
Large Graph
data structures
,
dfs and similar
,
dsu
,
graphs
,
number theory
,
two pointers
2400
x1337
1978E
Computing Machine
brute force
,
data structures
,
dp
,
greedy
,
implementation
2000
x3814
1978D
Elections
data structures
,
greedy
,
implementation
,
math
1600
x11292
1978C
Manhattan Permutations
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
1300
x14944
1978B
New Bakery
binary search
,
greedy
,
math
,
ternary search
800
x22335
1978A
Alice and Books
constructive algorithms
,
greedy
,
sortings
800
x25659
1977E
Tensor
constructive algorithms
,
graphs
,
interactive
2600
x681
1977D
XORificator
bitmasks
,
brute force
,
greedy
,
hashing
2300
x1850
1977C
Nikita and LCM
brute force
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
sortings
1900
x6755
1977B
Binary Colouring
bitmasks
,
constructive algorithms
,
greedy
,
math
1100
x17630
1977A
Little Nikita
math
800
x32017
1976F
Remove Bridges
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
2800
x586
1976E
Splittable Permutations
combinatorics
,
data structures
,
dfs and similar
,
greedy
,
math
,
trees
2500
x1038
1976D
Invertible Bracket Sequences
binary search
,
combinatorics
,
data structures
,
divide and conquer
,
implementation
,
two pointers
2000
x4607
1976C
Job Interview
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1600
x10392
1976B
Increase/Decrease/Copy
greedy
,
implementation
1100
x22265
1976A
Verify Password
implementation
,
sortings
,
strings
800
x28559
1975I
Mind Bloom
dp
3500
x99
1975H
378QAQ and Core
greedy
,
strings
3500
x116
1975G
Zimpha Fan Club
fft
,
greedy
,
math
,
strings
3000
x224
1975F
Set
bitmasks
,
brute force
,
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
math
2600
x827
1975E
Chain Queries
binary search
,
data structures
,
dfs and similar
,
implementation
,
trees
2100
x2322
1975D
Paint the Tree
brute force
,
dfs and similar
,
dp
,
greedy
,
shortest paths
,
trees
1700
x6020
1975C
Chamo and Mocha's Array
binary search
,
brute force
,
greedy
1200
x14550
1975B
378QAQ and Mocha's Array
brute force
,
greedy
,
math
,
sortings
1000
x17836
1975A
Bazoka and Mocha's Array
brute force
,
greedy
,
implementation
,
sortings
800
x18488
1974G
Money Buys Less Happiness Now
data structures
,
greedy
,
sortings
2000
x4291
1974F
Cutting Game
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x3570
1974E
Money Buys Happiness
dp
1800
x8040
1974D
Ingenuity-2
constructive algorithms
,
greedy
,
implementation
1400
x14821
1974C
Beautiful Triple Pairs
combinatorics
,
data structures
1400
x15780
1974B
Symmetric Encoding
implementation
,
sortings
,
strings
800
x30234
1974A
Phone Desktop
greedy
,
math
800
x33223
1973F
Maximum GCD Sum Queries
bitmasks
,
brute force
,
dp
,
implementation
,
number theory
3100
x229
1973E
Cat, Fox and Swaps
graphs
,
math
,
sortings
2500
x799
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