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Before contest
CodeCraft-22 and Codeforces Round #795 (Div. 2)
3 days
→ Filter Problems
Difficulty:
—
brute force
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
4A
Watermelon
brute force
,
math
800
x301820
231A
Team
brute force
,
greedy
800
x181626
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x116318
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x101910
122A
Lucky Division
brute force
,
number theory
1000
x81356
271A
Beautiful Year
brute force
800
x80579
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x61362
479A
Expression
brute force
,
math
1000
x60952
25A
IQ test
brute force
1300
x54866
268A
Games
brute force
800
x54635
155A
I_love_\%username\%
brute force
800
x46271
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x46093
189A
Cut Ribbon
brute force
,
dp
1300
x44029
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x43893
1512A
Spy Detected!
brute force
,
implementation
800
x37116
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x36116
1343A
Candies
brute force
,
math
900
x36067
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x34581
1475B
New Year's Number
brute force
,
dp
,
math
900
x32773
363B
Fence
brute force
,
dp
1100
x32485
1535A
Fair Playoff
brute force
,
implementation
800
x31613
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x31352
935A
Fafa and his Company
brute force
,
implementation
800
x30973
509A
Maximum in Table
brute force
,
implementation
800
x30758
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x30336
80A
Panoramix's Prediction
brute force
800
x29787
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x29452
1097A
Gennady and a Card Game
brute force
,
implementation
800
x28981
1538A
Stone Game
brute force
,
dp
,
greedy
800
x28536
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x27308
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x27240
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x27070
466C
Number of Ways
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x26773
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x26266
1339A
Filling Diamonds
brute force
,
dp
,
implementation
,
math
900
x26007
711A
Bus to Udayland
brute force
,
implementation
800
x25032
1633A
Div. 7
brute force
800
x24875
894A
QAQ
brute force
,
dp
800
x24570
1382A
Common Subsequence
brute force
800
x24022
1462C
Unique Number
brute force
,
greedy
,
math
900
x23971
1359A
Berland Poker
brute force
,
greedy
,
math
1000
x23915
1409B
Minimum Product
brute force
,
greedy
,
math
1100
x23840
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x23783
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x23743
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x23723
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x23583
320A
Magic Numbers
brute force
,
greedy
900
x23295
214A
System of Equations
brute force
800
x23277
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x23137
1328B
K-th Beautiful String
binary search
,
brute force
,
combinatorics
,
implementation
,
math
1300
x23095
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x23077
1473B
String LCM
brute force
,
math
,
number theory
,
strings
1000
x22913
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x22798
1478A
Nezzar and Colorful Balls
brute force
,
greedy
800
x22601
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x22548
1490C
Sum of Cubes
binary search
,
brute force
,
brute force
,
math
1100
x22514
1324B
Yet Another Palindrome Problem
brute force
,
strings
1100
x22429
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x21784
1555A
PizzaForces
brute force
,
math
900
x21715
1391B
Fix You
brute force
,
greedy
,
implementation
800
x21695
1345B
Card Constructions
binary search
,
brute force
,
dp
,
math
1100
x21365
330A
Cakeminator
brute force
,
implementation
800
x21318
1490B
Balanced Remainders
brute force
,
constructive algorithms
,
math
1000
x21309
1355A
Sequence with Digits
brute force
,
implementation
,
math
1200
x21094
1497A
Meximization
brute force
,
data structures
,
greedy
,
sortings
800
x20961
1364A
XXXXX
brute force
,
data structures
,
number theory
,
two pointers
1200
x20848
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x20815
550C
Divisibility by Eight
brute force
,
dp
,
math
1500
x20687
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x20592
1657A
Integer Moves
brute force
,
math
800
x20483
1395A
Boboniu Likes to Color Balls
brute force
,
math
1000
x20362
1614A
Divan and a Store
brute force
,
constructive algorithms
,
greedy
800
x20113
1637A
Sorting Parts
brute force
,
sortings
800
x19715
1409C
Yet Another Array Restoration
brute force
,
math
,
number theory
1200
x19535
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x19480
1498A
GCD Sum
brute force
,
math
800
x19307
1506C
Double-ended Strings
brute force
,
implementation
,
strings
1000
x19275
1515B
Phoenix and Puzzle
brute force
,
geometry
,
math
,
number theory
1000
x19093
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x19033
1228A
Distinct Digits
brute force
,
implementation
800
x19017
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x18946
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x18909
1541B
Pleasant Pairs
brute force
,
implementation
,
math
,
number theory
1200
x18830
1607C
Minimum Extraction
brute force
,
sortings
1000
x18639
988A
Diverse Team
brute force
,
implementation
800
x18621
1176A
Divide it!
brute force
,
greedy
,
implementation
800
x18610
1536A
Omkar and Bad Story
brute force
,
constructive algorithms
800
x18603
1380A
Three Indices
brute force
,
data structures
900
x18586
378A
Playing with Dice
brute force
800
x18584
352A
Jeff and Digits
brute force
,
implementation
,
math
1000
x18542
1644B
Anti-Fibonacci Permutation
brute force
,
constructive algorithms
,
implementation
800
x18321
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x18286
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x18257
1108B
Divisors of Two Integers
brute force
,
greedy
,
math
,
number theory
1100
x18216
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x18070
1430A
Number of Apartments
brute force
,
constructive algorithms
,
math
900
x18017
999A
Mishka and Contest
brute force
,
implementation
800
x18000
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x17933
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x17914
1494A
ABC String
bitmasks
,
brute force
,
implementation
900
x17890
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