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ICPC Challenge
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Before contest
Codeforces Round 914 (Div. 2)
30:07:36
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brute force
combine-tags-by-or
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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
4A
Watermelon
brute force
,
math
800
x442212
231A
Team
brute force
,
greedy
800
x273228
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x176505
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x153835
271A
Beautiful Year
brute force
800
x117412
122A
Lucky Division
brute force
,
number theory
1000
x108620
479A
Expression
brute force
,
math
1000
x83030
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x78661
25A
IQ test
brute force
1300
x75777
268A
Games
brute force
800
x75627
155A
I_love_\%username\%
brute force
800
x65757
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x65564
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x62375
189A
Cut Ribbon
brute force
,
dp
1300
x58376
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x54839
1512A
Spy Detected!
brute force
,
implementation
800
x54465
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x46995
363B
Fence
brute force
,
dp
1100
x45446
80A
Panoramix's Prediction
brute force
800
x45374
1343A
Candies
brute force
,
math
900
x44297
1475B
New Year's Number
brute force
,
dp
,
math
900
x43379
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x43301
1535A
Fair Playoff
brute force
,
implementation
800
x43129
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x42208
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x40892
1873A
Short Sort
brute force
,
implementation
800
x39807
935A
Fafa and his Company
brute force
,
implementation
800
x39495
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x37936
1873B
Good Kid
brute force
,
greedy
,
math
800
x36972
509A
Maximum in Table
brute force
,
implementation
800
x36025
1097A
Gennady and a Card Game
brute force
,
implementation
800
x35082
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x34771
1538A
Stone Game
brute force
,
dp
,
greedy
800
x34518
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x34441
1872A
Two Vessels
brute force
,
greedy
,
math
800
x34199
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x33981
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x33015
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x32881
1703C
Cypher
brute force
,
implementation
,
strings
800
x32215
214A
System of Equations
brute force
800
x31627
320A
Magic Numbers
brute force
,
greedy
900
x31298
894A
QAQ
brute force
,
dp
800
x31058
1633A
Div. 7
brute force
800
x30743
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x30113
1462C
Unique Number
brute force
,
greedy
,
math
900
x29690
1490C
Sum of Cubes
binary search
,
brute force
,
brute force
,
math
1100
x29389
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x28634
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x28339
1473B
String LCM
brute force
,
math
,
number theory
,
strings
1000
x28321
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28169
711A
Bus to Udayland
brute force
,
implementation
800
x28162
1359A
Berland Poker
brute force
,
greedy
,
math
1000
x27849
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x27818
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x27606
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x27475
1409B
Minimum Product
brute force
,
greedy
,
math
1100
x27386
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x27328
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x27221
1328B
K-th Beautiful String
binary search
,
brute force
,
combinatorics
,
implementation
,
math
1300
x27133
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x27129
1772B
Matrix Rotation
brute force
,
implementation
800
x27001
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x26881
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x26693
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x26598
1698A
XOR Mixup
bitmasks
,
brute force
800
x26566
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x26438
1324B
Yet Another Palindrome Problem
brute force
,
strings
1100
x26294
1555A
PizzaForces
brute force
,
math
900
x26264
330A
Cakeminator
brute force
,
implementation
800
x26023
550C
Divisibility by Eight
brute force
,
dp
,
math
1500
x25860
1382A
Common Subsequence
brute force
800
x25770
1364A
XXXXX
brute force
,
data structures
,
number theory
,
two pointers
1200
x25516
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x25274
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x25167
1391B
Fix You
brute force
,
greedy
,
implementation
800
x25129
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x24962
1345B
Card Constructions
binary search
,
brute force
,
dp
,
math
1100
x24839
1490B
Balanced Remainders
brute force
,
constructive algorithms
,
math
1000
x24821
1788A
One and Two
brute force
,
implementation
,
math
800
x24746
1846B
Rudolph and Tic-Tac-Toe
brute force
,
implementation
,
strings
800
x24668
1355A
Sequence with Digits
brute force
,
implementation
,
math
1200
x24629
1541B
Pleasant Pairs
brute force
,
implementation
,
math
,
number theory
1200
x24599
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x24419
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x24363
1853A
Desorting
brute force
,
greedy
,
math
800
x24362
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24275
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x23936
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x23842
1791D
Distinct Split
brute force
,
greedy
,
strings
1000
x23677
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x23541
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x23420
1607C
Minimum Extraction
brute force
,
sortings
1000
x23357
1657A
Integer Moves
brute force
,
math
800
x23344
352A
Jeff and Digits
brute force
,
implementation
,
math
1000
x23309
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x23172
1395A
Boboniu Likes to Color Balls
brute force
,
math
1000
x22809
1614A
Divan and a Store
brute force
,
constructive algorithms
,
greedy
800
x22682
1795A
Two Towers
brute force
,
implementation
,
strings
800
x22661
1822A
TubeTube Feed
brute force
,
implementation
800
x22466
1703D
Double Strings
brute force
,
data structures
,
strings
1100
x22443
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