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2023 Post World Finals Online ICPC Challenge powered by Huawei
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math
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
1969D
Shop Game
data structures
,
greedy
,
math
,
sortings
x2655
1969A
Two Friends
constructive algorithms
,
implementation
,
math
x14142
1968G2
Division + LCP (hard version)
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
dsu
,
hashing
,
math
,
string suffix structures
,
strings
x871
1968D
Permutation Game
brute force
,
dfs and similar
,
games
,
graphs
,
math
x8761
1968A
Maximize?
brute force
,
math
,
number theory
x22077
1967E1
Again Counting Arrays (Easy Version)
combinatorics
,
dp
,
fft
,
math
x88
1967C
Fenwick Tree
brute force
,
combinatorics
,
data structures
,
dp
,
math
,
matrices
,
trees
x1027
1967B2
Reverse Card (Hard Version)
brute force
,
math
,
number theory
x2479
1967B1
Reverse Card (Easy Version)
brute force
,
math
,
number theory
x8154
1967A
Permutation Counting
binary search
,
greedy
,
implementation
,
math
,
sortings
x7468
1965A
Everything Nim
games
,
greedy
,
math
,
sortings
1400
x8765
1957E
Carousel of Combinations
brute force
,
combinatorics
,
dp
,
math
,
number theory
2400
x918
1957D
A BIT of an Inequality
bitmasks
,
brute force
,
dp
,
math
1900
x3325
1957C
How Does the Rook Move?
combinatorics
,
dp
,
math
1600
x7042
1956E2
Nene vs. Monsters (Hard Version)
brute force
,
greedy
,
implementation
,
math
2700
x624
1956E1
Nene vs. Monsters (Easy Version)
brute force
,
implementation
,
math
2500
x1155
1956D
Nene and the Mex Operator
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
dp
,
greedy
,
implementation
,
math
2000
x3026
1956C
Nene's Magical Matrix
constructive algorithms
,
greedy
,
math
1600
x10204
1955G
GCD on a grid
brute force
,
dfs and similar
,
dp
,
implementation
,
math
,
number theory
1900
x3267
1955F
Unfair Game
dp
,
games
,
greedy
,
math
,
schedules
1800
x5685
1955C
Inhabitant of the Deep Sea
greedy
,
implementation
,
math
1300
x17224
1955A
Yogurt Sale
math
800
x35508
1954F
Unique Strings
combinatorics
,
dp
,
math
3100
x194
1954E
Chain Reaction
binary search
,
data structures
,
dsu
,
greedy
,
implementation
,
math
,
number theory
2200
x1680
1954D
Colored Balls
combinatorics
,
dp
,
math
,
sortings
1800
x4698
1954C
Long Multiplication
greedy
,
math
,
number theory
1200
x15079
1954B
Make It Ugly
implementation
,
math
1200
x14901
1954A
Painting the Ribbon
constructive algorithms
,
greedy
,
math
900
x19795
1952G
Mathematician Takeover
binary search
,
dfs and similar
,
math
x914
1952E
Sweep Line
combinatorics
,
games
,
math
x206
1951G
Clacking Balls
combinatorics
,
math
,
probabilities
3100
x242
1951E
No Palindromes
brute force
,
constructive algorithms
,
divide and conquer
,
greedy
,
hashing
,
implementation
,
math
,
strings
2000
x2937
1951D
Buying Jewels
constructive algorithms
,
greedy
,
math
2000
x4596
1951C
Ticket Hoarding
greedy
,
math
,
sortings
1400
x9329
1951A
Dual Trigger
constructive algorithms
,
greedy
,
math
900
x16055
1950C
Clock Conversion
implementation
,
math
800
x34326
1949K
Make Triangle
constructive algorithms
,
math
2800
x223
1949H
Division Avoidance
greedy
,
math
3100
x68
1949E
Damage per Second
brute force
,
math
2900
x78
1948F
Rare Coins
combinatorics
,
math
,
probabilities
2500
x1113
1946E
Girl Permutation
combinatorics
,
dp
,
math
,
number theory
2200
x2056
1946B
Maximum Sum
dp
,
greedy
,
math
1100
x17676
1945H
GCD is Greater
brute force
,
data structures
,
math
,
number theory
2600
x476
1945B
Fireworks
math
,
number theory
900
x19402
1945A
Setting up Camp
greedy
,
math
800
x24422
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x20995
1943D1
Counting Is Fun (Easy Version)
brute force
,
combinatorics
,
dp
,
math
2400
x1231
1943B
Non-Palindromic Substring
hashing
,
implementation
,
math
,
strings
2000
x3229
1942G
Bessie and Cards
combinatorics
,
dp
,
math
2800
x363
1942F
Farmer John's Favorite Function
brute force
,
data structures
,
implementation
,
math
2700
x547
1942C2
Bessie's Birthday Cake (Hard Version)
geometry
,
greedy
,
math
1700
x5414
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x9374
1942B
Bessie and MEX
constructive algorithms
,
math
1100
x12108
1942A
Farmer John's Challenge
constructive algorithms
,
math
800
x15434
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x26230
1941A
Rudolf and the Ticket
brute force
,
math
800
x38676
1937A
Shuffle Party
implementation
,
math
800
x21339
1936E
Yet Yet Another Permutation Problem
divide and conquer
,
fft
,
math
3400
x94
1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2404
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x6512
1935E
Distance Learning Courses in MAC
bitmasks
,
brute force
,
data structures
,
greedy
,
math
2400
x1160
1935D
Exam in MAC
binary search
,
combinatorics
,
implementation
,
math
1800
x7265
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x6004
1934B
Yet Another Coin Problem
brute force
,
dp
,
greedy
,
math
1200
x16509
1934A
Too Min Too Max
greedy
,
math
800
x23237
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
,
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
math
2300
x856
1933E
Turtle vs. Rabbit Race: Optimal Trainings
binary search
,
implementation
,
math
,
ternary search
1500
x9625
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x17638
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x20353
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x29742
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35240
1932G
Moving Platforms
graphs
,
math
,
number theory
,
shortest paths
2300
x869
1932E
Final Countdown
implementation
,
math
,
number theory
1600
x6723
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x13547
1931G
One-Dimensional Puzzle
combinatorics
,
math
,
number theory
2000
x2425
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x13221
1931D
Divisible Pairs
combinatorics
,
math
,
number theory
1300
x15725
1931C
Make Equal Again
brute force
,
greedy
,
math
1000
x25914
1930E
2..3...4.... Wonderful! Wonderful!
combinatorics
,
dp
,
math
2400
x981
1930B
Permutation Printing
brute force
,
constructive algorithms
,
math
1000
x13507
1929F
Sasha and the Wedding Binary Search Tree
brute force
,
combinatorics
,
data structures
,
dfs and similar
,
math
,
trees
2300
x1611
1929E
Sasha and the Happy Tree Cutting
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
2300
x1490
1929D
Sasha and a Walk in the City
combinatorics
,
dp
,
math
,
trees
1900
x4140
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13157
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x23699
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28776
1928F
Digital Patterns
combinatorics
,
data structures
,
implementation
,
math
2900
x209
1928E
Modular Sequence
brute force
,
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
,
number theory
2300
x1528
1928D
Lonely Mountain Dungeons
brute force
,
data structures
,
greedy
,
math
,
ternary search
1900
x3713
1928C
Physical Education Lesson
brute force
,
math
,
number theory
1600
x7425
1928A
Rectangle Cutting
geometry
,
math
800
x21078
1927G
Paint Charges
data structures
,
dp
,
greedy
,
math
2300
x1484
1927E
Klever Permutation
constructive algorithms
,
math
,
two pointers
1400
x12325
1927C
Choose the Different Ones!
brute force
,
greedy
,
math
1000
x25443
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x9889
1925D
Good Trip
combinatorics
,
dp
,
math
,
probabilities
1900
x3200
1925B
A Balanced Problemset?
brute force
,
greedy
,
math
,
number theory
1200
x18145
1924D
Balanced Subsequences
combinatorics
,
dp
,
math
2700
x762
1924C
Fractal Origami
geometry
,
math
,
matrices
2400
x1030
1924B
Space Harbour
data structures
,
implementation
,
math
,
sortings
2100
x2267
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