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Codeforces Round 940 (Div. 2) and CodeCraft-23
47:55:15
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Difficulty:
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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
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number theory
probabilities
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shortest paths
sortings
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strings
ternary search
trees
two pointers
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Problems
#
Name
546B
Soldier and Badges
brute force
,
greedy
,
implementation
,
sortings
1200
x17146
1553C
Penalty
bitmasks
,
brute force
,
dp
,
greedy
1200
x17245
1641A
Great Sequence
brute force
,
greedy
,
sortings
1200
x17446
1536B
Prinzessin der Verurteilung
brute force
,
constructive algorithms
,
strings
1200
x17625
1594C
Make Them Equal
brute force
,
greedy
,
math
,
strings
1200
x17769
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x17815
1925B
A Balanced Problemset?
brute force
,
greedy
,
math
,
number theory
1200
x17990
1327B
Princesses and Princes
brute force
,
graphs
,
greedy
1200
x18232
1362B
Johnny and His Hobbies
bitmasks
,
brute force
1200
x18235
217A
Ice Skating
brute force
,
dfs and similar
,
dsu
,
graphs
1200
x20303
1406B
Maximum Product
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x21987
1409C
Yet Another Array Restoration
brute force
,
math
,
number theory
1200
x22692
1355A
Sequence with Digits
brute force
,
implementation
,
math
1200
x25410
1541B
Pleasant Pairs
brute force
,
implementation
,
math
,
number theory
1200
x26317
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x26349
1364A
XXXXX
brute force
,
data structures
,
number theory
,
two pointers
1200
x26690
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x27629
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x34220
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x39808
635A
Orchestra
brute force
,
implementation
1100
x2817
252A
Little Xor
brute force
,
implementation
1100
x5145
192B
Walking in the Rain
brute force
,
implementation
1100
x6131
242A
Heads or Tails
brute force
,
implementation
1100
x6223
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6587
975B
Mancala
brute force
,
implementation
1100
x6728
7A
Kalevitch and Chess
brute force
,
constructive algorithms
1100
x6825
754B
Ilya and tic-tac-toe game
brute force
,
implementation
1100
x7138
801A
Vicious Keyboard
brute force
1100
x7206
508A
Pasha and Pixels
brute force
1100
x7785
858A
k-rounding
brute force
,
math
,
number theory
1100
x7836
556B
Case of Fake Numbers
brute force
,
implementation
1100
x7865
629B
Far Relative’s Problem
brute force
1100
x7941
602A
Two Bases
brute force
,
implementation
1100
x8326
289A
Polo the Penguin and Segments
brute force
,
implementation
1100
x8652
938B
Run For Your Prize
brute force
,
greedy
1100
x8729
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8838
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9119
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9233
869A
The Artful Expedient
brute force
,
implementation
1100
x9344
1105B
Zuhair and Strings
brute force
,
implementation
,
strings
1100
x9785
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9824
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10021
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10145
779B
Weird Rounding
brute force
,
greedy
1100
x10178
1214B
Badges
brute force
,
math
1100
x10503
1105A
Salem and Sticks
brute force
,
implementation
1100
x10763
1415B
Repainting Street
brute force
,
brute force
,
greedy
1100
x11990
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12268
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12389
1902B
Getting Points
binary search
,
brute force
,
greedy
1100
x13179
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13655
1623B
Game on Ranges
brute force
,
dfs and similar
,
implementation
,
sortings
1100
x13878
488A
Giga Tower
brute force
1100
x14030
1673B
A Perfectly Balanced String?
brute force
,
greedy
,
strings
1100
x14200
1637B
MEX and Array
brute force
,
dp
,
greedy
,
math
1100
x14589
1293A
ConneR and the A.R.C. Markland-N
binary search
,
brute force
,
implementation
1100
x14934
1891B
Deja Vu
brute force
,
math
,
sortings
1100
x15518
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15685
1625B
Elementary Particles
brute force
,
greedy
,
sortings
1100
x15829
1780B
GCD Partition
brute force
,
greedy
,
math
,
number theory
1100
x16428
1821B
Sort the Subarray
brute force
,
greedy
1100
x16774
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17118
1304B
Longest Palindrome
brute force
,
constructive algorithms
,
greedy
,
implementation
,
strings
1100
x17381
799A
Carrot Cakes
brute force
,
implementation
1100
x17617
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17722
1899B
250 Thousand Tons of TNT
brute force
,
implementation
,
number theory
1100
x17827
1288A
Deadline
binary search
,
brute force
,
math
,
ternary search
1100
x17854
1478B
Nezzar and Lucky Number
brute force
,
dp
,
greedy
,
math
1100
x18014
1692D
The Clock
brute force
,
implementation
1100
x18630
287A
IQ Test
brute force
,
implementation
1100
x18707
1950D
Product of Binary Decimals
brute force
,
dp
,
implementation
,
number theory
1100
x18957
1481B
New Colony
brute force
,
greedy
,
implementation
1100
x19006
1471B
Strange List
brute force
,
greedy
,
implementation
,
math
1100
x19085
1917B
Erase First or Second Letter
brute force
,
combinatorics
,
data structures
,
dp
,
strings
1100
x19106
66B
Petya and Countryside
brute force
,
implementation
1100
x19325
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x19410
1633C
Kill the Monster
brute force
,
math
1100
x19566
1428C
ABBB
brute force
,
data structures
,
greedy
,
strings
1100
x19584
1948B
Array Fix
brute force
,
dp
,
greedy
,
implementation
1100
x19810
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x20060
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x21360
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21512
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x21798
1511C
Yet Another Card Deck
brute force
,
data structures
,
implementation
,
trees
1100
x22008
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x22093
1108B
Divisors of Two Integers
brute force
,
greedy
,
math
,
number theory
1100
x22296
1703D
Double Strings
brute force
,
data structures
,
strings
1100
x24162
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25218
1345B
Card Constructions
binary search
,
brute force
,
dp
,
math
1100
x25422
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x25642
919B
Perfect Number
binary search
,
brute force
,
dp
,
implementation
,
number theory
1100
x26646
1324B
Yet Another Palindrome Problem
brute force
,
strings
1100
x27365
1409B
Minimum Product
brute force
,
greedy
,
math
1100
x28175
1490C
Sum of Cubes
binary search
,
brute force
,
brute force
,
math
1100
x31070
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x35596
363B
Fence
brute force
,
dp
1100
x48831
1769B1
Копирование файлов I
*special problem
,
brute force
,
implementation
,
math
1000
x1307
1906A
Easy As ABC
brute force
1000
x3445
120A
Elevator
brute force
,
implementation
,
math
1000
x4480
106B
Choosing Laptop
brute force
,
implementation
1000
x5909
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