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Before contest
Codeforces Round 941 (Div. 1)
2 days
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
2 days
Register now »
*has extra registration
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combine-tags-by-or
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2-sat
binary search
bitmasks
brute force
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constructive algorithms
data structures
dfs and similar
divide and conquer
dp
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expression parsing
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greedy
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Problems
#
Name
1656C
Make Equal With Mod
constructive algorithms
,
math
,
number theory
,
sortings
1200
x18435
1497B
M-arrays
constructive algorithms
,
greedy
,
math
1200
x18449
1922B
Forming Triangles
combinatorics
,
constructive algorithms
,
math
,
sortings
1200
x18827
327B
Hungry Sequence
math
1200
x18950
1371B
Magical Calendar
math
1200
x18991
1487B
Cat Cycle
math
,
number theory
1200
x19571
1598C
Delete Two Elements
data structures
,
dp
,
implementation
,
math
,
two pointers
1200
x19989
1221C
Perfect Team
binary search
,
math
1200
x20089
1792B
Stand-up Comedian
greedy
,
math
1200
x20118
1744D
Divisibility by 2^n
greedy
,
math
,
sortings
1200
x20153
1872D
Plus Minus Permutation
math
1200
x20738
1455B
Jumps
constructive algorithms
,
math
1200
x21205
1742E
Scuza
binary search
,
greedy
,
math
1200
x21635
1514B
AND 0, Sum Big
bitmasks
,
combinatorics
,
math
1200
x22589
1334A
Level Statistics
implementation
,
math
1200
x22606
1409C
Yet Another Array Restoration
brute force
,
math
,
number theory
1200
x22706
1420B
Rock and Lever
bitmasks
,
math
1200
x23515
1497C1
k-LCM (easy version)
constructive algorithms
,
math
1200
x24440
1355A
Sequence with Digits
brute force
,
implementation
,
math
1200
x25435
1537C
Challenging Cliffs
constructive algorithms
,
greedy
,
implementation
,
math
1200
x26238
1541B
Pleasant Pairs
brute force
,
implementation
,
math
,
number theory
1200
x26366
1363A
Odd Selection
brute force
,
implementation
,
math
1200
x34263
1352B
Same Parity Summands
constructive algorithms
,
math
1200
x35146
1520D
Same Differences
data structures
,
hashing
,
math
1200
x42358
1352C
K-th Not Divisible by n
binary search
,
math
1200
x49439
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x70862
174A
Problem About Equation
math
1100
x2593
883M
Quadcopter Competition
greedy
,
math
1100
x3487
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x3573
39D
Cubical Planet
math
1100
x3730
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x3748
402A
Nuts
greedy
,
math
1100
x4503
136B
Ternary Logic
implementation
,
math
1100
x4639
190A
Vasya and the Bus
greedy
,
math
1100
x5708
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x5853
955A
Feed the cat
greedy
,
math
1100
x6545
667A
Pouring Rain
geometry
,
math
1100
x7775
858A
k-rounding
brute force
,
math
,
number theory
1100
x7840
557A
Ilya and Diplomas
greedy
,
implementation
,
math
1100
x8197
592B
The Monster and the Squirrel
math
1100
x8537
705B
Spider Man
games
,
math
1100
x9027
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9130
1033B
Square Difference
math
,
number theory
1100
x9138
1085B
Div Times Mod
math
1100
x9169
789A
Anastasia and pebbles
implementation
,
math
1100
x9211
1227A
Math Problem
math
1100
x9461
630D
Hexagons!
math
1100
x9767
370A
Rook, Bishop and King
graphs
,
math
,
shortest paths
1100
x9842
1214B
Badges
brute force
,
math
1100
x10507
733B
Parade
math
1100
x10554
630J
Divisibility
math
,
number theory
1100
x10652
946B
Weird Subtraction Process
math
,
number theory
1100
x10654
714A
Meeting of Old Friends
implementation
,
math
1100
x10669
1117A
Best Subsegment
implementation
,
math
1100
x10748
1099B
Squares and Segments
binary search
,
constructive algorithms
,
math
1100
x10973
1166B
All the Vowels Please
constructive algorithms
,
math
,
number theory
1100
x11138
987B
High School: Become Human
math
1100
x11320
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x11592
841B
Godsend
games
,
math
1100
x11941
1942B
Bessie and MEX
constructive algorithms
,
math
1100
x11953
721B
Passwords
implementation
,
math
,
sortings
,
strings
1100
x11964
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x12004
1836B
Astrophysicists
greedy
,
math
1100
x12245
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12283
1534B
Histogram Ugliness
greedy
,
implementation
,
math
1100
x12346
1787B
Number Factorization
greedy
,
math
,
number theory
1100
x12651
869B
The Eternal Immortality
math
1100
x12864
581B
Luxurious Houses
implementation
,
math
1100
x12878
1038B
Non-Coprime Partition
constructive algorithms
,
math
1100
x13073
1820B
JoJo's Incredible Adventures
math
,
strings
,
two pointers
1100
x13274
1863C
MEX Repetition
implementation
,
math
1100
x13308
1165A
Remainder
implementation
,
math
1100
x13508
1189B
Number Circle
greedy
,
math
,
sortings
1100
x13641
797A
k-Factorization
implementation
,
math
,
number theory
1100
x13899
1901B
Chip and Ribbon
greedy
,
math
1100
x13906
527A
Playing with Paper
implementation
,
math
1100
x14078
1066A
Vova and Train
math
1100
x14233
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x14265
1417B
Two Arrays
greedy
,
math
,
sortings
1100
x14317
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14522
1726B
Mainak and Interesting Sequence
bitmasks
,
constructive algorithms
,
math
1100
x14598
1637B
MEX and Array
brute force
,
dp
,
greedy
,
math
1100
x14599
675A
Infinite Sequence
math
1100
x14743
1793B
Fedya and Array
constructive algorithms
,
math
1100
x15187
1842B
Tenzing and Books
bitmasks
,
greedy
,
math
1100
x15539
1891B
Deja Vu
brute force
,
math
,
sortings
1100
x15589
1826B
Lunatic Never Content
math
,
number theory
1100
x15622
1838B
Minimize Permutation Subarrays
constructive algorithms
,
math
1100
x15775
1263A
Sweet Problem
math
1100
x15882
1706B
Making Towers
dp
,
greedy
,
math
1100
x16190
1780B
GCD Partition
brute force
,
greedy
,
math
,
number theory
1100
x16471
1731B
Kill Demodogs
greedy
,
math
1100
x16671
1288B
Yet Another Meme Problem
math
1100
x16718
1176B
Merge it!
math
1100
x16764
1759C
Thermostat
greedy
,
math
,
shortest paths
1100
x16942
1574B
Combinatorics Homework
combinatorics
,
greedy
,
math
1100
x16986
1783B
Matrix of Differences
constructive algorithms
,
math
1100
x17116
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17153
1496B
Max and Mex
math
1100
x17175
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x17374
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