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2023 Post World Finals Online ICPC Challenge powered by Huawei
2 days
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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
1431J
Zero-XOR Array
*special problem
,
dp
3400
x42
1403C
Chess Rush
*special problem
,
combinatorics
,
dp
,
implementation
,
math
3200
x42
1571I
Physical Examination
*special problem
,
binary search
,
data structures
3200
x54
1488J
Flower Shop
*special problem
,
data structures
,
fft
,
math
3100
x31
1488I
Demonic Invasion
*special problem
,
flows
3100
x33
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x41
1211I
Unusual Graph
*special problem
,
graphs
3000
x34
1571J
Two Railroads
*special problem
3000
x36
683J
The Hero with Bombs
*special problem
3000
x40
775A
University Schedule
*special problem
2900
927A
BuberPool Taxi Optimization
*special problem
,
interactive
2900
x1
1910J
Two Colors
*special problem
2900
x42
1431I
Cyclic Shifts
*special problem
,
strings
2900
x42
1346I
Pac-Man 2.0
*special problem
,
dp
2900
x43
1571H
Laser Beams
*special problem
,
geometry
,
probabilities
2900
x44
1402B
Roads
*special problem
,
geometry
,
sortings
2900
x102
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x118
1387C
Viruses
*special problem
,
dp
,
shortest paths
,
string suffix structures
2900
x125
1488H
Build From Suffixes
*special problem
,
combinatorics
,
data structures
2800
x53
290F
Greedy Petya
*special problem
,
dfs and similar
,
graphs
,
greedy
2800
x126
1386C
Joker
*special problem
,
bitmasks
,
data structures
,
divide and conquer
,
dsu
2800
x429
1910I
Inverse Problem
*special problem
,
combinatorics
,
dp
2700
x39
345F
Superstitions Inspection
*special problem
2700
x43
345E
Black Cat Rush
*special problem
2700
x43
1346H
Game with Segments
*special problem
,
data structures
,
games
2700
x46
1910G
Pool Records
*special problem
,
greedy
2700
x49
774F
Pens And Days Of Week
*special problem
,
binary search
,
number theory
2700
x104
774G
Perfectionist Arkadiy
*special problem
,
number theory
2700
x173
1386A
Colors
*special problem
,
binary search
,
constructive algorithms
,
interactive
2700
x250
1431H
Rogue-like Game
*special problem
,
brute force
,
greedy
,
two pointers
2600
x64
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x196
1505G
Encoded message
*special problem
,
implementation
2600
x291
683I
Loader
*special problem
,
graphs
2500
x38
530I
Different variables
*special problem
2500
x43
1211G
King's Path
*special problem
,
math
,
trees
2500
x66
1571G
A Battle Against a Dragon
*special problem
,
data structures
,
dp
2500
x71
1488G
Painting Numbers
*special problem
,
data structures
,
greedy
,
number theory
2500
x117
290E
HQ
*special problem
,
constructive algorithms
2500
x195
1505H
L BREAK into program
*special problem
2500
x481
1387B2
Village (Maximum)
*special problem
,
dfs and similar
,
trees
2500
x796
100J
Interval Coloring
*special problem
,
greedy
,
math
2400
x60
661H
Rotate Matrix
*special problem
2400
x63
1910H
Sum of Digits of Sums
*special problem
,
binary search
,
data structures
2400
x77
64I
Sort the Table
*special problem
,
sortings
2400
x84
409I
Feed the Golorp
*special problem
2400
x115
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x286
72D
Perse-script
*special problem
,
expression parsing
2300
x72
470G
Hamming Distance
*special problem
2300
x90
470F
Pairwise Sums
*special problem
2300
x96
774I
Composing Of String
*special problem
,
dp
2300
x100
64H
Table Bowling
*special problem
,
sortings
2300
x109
1769D3
Игра в Девятку III
*special problem
,
brute force
2300
x115
1211F
kotlinkotlinkotlinkotlin...
*special problem
,
graphs
,
implementation
,
strings
2300
x118
1346G
Two IP Cameras
*special problem
,
math
,
number theory
2300
x130
130I
Array sorting
*special problem
,
sortings
2300
x164
1488F
Dogecoin
*special problem
,
*special problem
,
binary search
,
data structures
2300
x167
470H
Array Sorting
*special problem
2300
x183
774E
Big Number and Remainder
*special problem
,
math
,
number theory
2300
x206
1403B
Spring cleaning
*special problem
,
data structures
,
dfs and similar
,
graphs
,
trees
2300
x358
661G
Hungarian Notation
*special problem
2200
x50
345G
Suffix Subgroup
*special problem
,
strings
2200
x51
345D
Chain Letter
*special problem
,
dfs and similar
,
graphs
2200
x75
72B
INI-file
*special problem
,
implementation
2200
x75
64G
Path Canonization
*special problem
2200
x116
1769D2
Игра в Девятку II
*special problem
,
brute force
2200
x186
1488E
Palindromic Doubles
*special problem
,
data structures
,
dp
2200
x204
774H
Repairing Of String
*special problem
,
constructive algorithms
2200
x254
172E
BHTML+BCSS
*special problem
,
dfs and similar
,
expression parsing
2200
x267
153C
Caesar Cipher
*special problem
2200
x358
409G
On a plane
*special problem
,
geometry
2200
x499
1505I
Mysterious language again, seriously?
*special problem
2200
x538
1505F
Math
*special problem
,
math
2200
x1471
153E
Euclidean Distance
*special problem
2100
x72
100H
Battleship
*special problem
,
dfs and similar
,
implementation
2100
x74
530F
Jumping frogs
*special problem
2100
x97
530H
Points in triangle
*special problem
,
geometry
2100
x119
345B
Triskaidekaphobia
*special problem
2100
x121
661D
Maximal Difference
*special problem
2100
x124
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x137
530G
Levenshtein distance
*special problem
2100
x146
1431F
Neural Network Problem
*special problem
,
binary search
,
greedy
2100
x152
1910E
Maximum Sum Subarrays
*special problem
,
dp
2100
x167
774B
Significant Cups
*special problem
,
binary search
,
data structures
,
two pointers
2100
x216
774A
Amusement Park
*special problem
,
ternary search
2100
x294
1387A
Graph
*special problem
,
binary search
,
dfs and similar
,
dp
,
math
,
ternary search
2100
x670
644C
Hostname Aliases
*special problem
,
binary search
,
data structures
,
implementation
,
sortings
,
strings
2100
x908
656D
Rosetta Problem
*special problem
2100
x939
1387B1
Village (Minimum)
*special problem
,
dp
,
greedy
,
trees
2100
x1314
162G
Non-decimal sum
*special problem
2000
x55
162I
Truncatable primes
*special problem
2000
x71
153D
Date Change
*special problem
2000
x77
661E
Divisibility Check
*special problem
2000
x78
345C
Counting Fridays
*special problem
2000
x121
661C
Array Sum
*special problem
2000
x126
1910F
Build Railway Stations
*special problem
,
greedy
,
trees
2000
x156
64F
Domain
*special problem
,
expression parsing
2000
x175
1571F
Kotlinforces
*special problem
,
constructive algorithms
,
dp
2000
x176
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x188
1431E
Chess Match
*special problem
2000
x217
1346F
Dune II: Battle For Arrakis
*special problem
,
data structures
,
greedy
,
math
2000
x218
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