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Before contest
Codeforces Round 941 (Div. 1)
4 days
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
4 days
Register now »
*has extra registration
→ Filter Problems
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greedy
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
231A
Team
brute force
,
greedy
800
x297492
50A
Domino piling
greedy
,
math
800
x227577
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197128
58A
Chat room
greedy
,
strings
1000
x121660
160A
Twins
greedy
,
sortings
900
x110325
405A
Gravity Flip
greedy
,
implementation
,
sortings
900
x93895
469A
I Wanna Be the Guy
greedy
,
implementation
800
x90871
996A
Hit the Lottery
dp
,
greedy
800
x83753
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x82143
337A
Puzzles
greedy
900
x75253
230A
Dragons
greedy
,
sortings
1000
x73955
1399A
Remove Smallest
greedy
,
sortings
800
x62414
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62217
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x59815
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56410
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55198
1367B
Even Array
greedy
,
math
800
x50027
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48509
34B
Sale
greedy
,
sortings
900
x48339
1551A
Polycarp and Coins
greedy
,
math
800
x48157
1360A
Minimal Square
greedy
,
math
800
x47841
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x47695
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47379
1472B
Fair Division
dp
,
greedy
,
math
800
x47256
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46264
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x46263
1360B
Honest Coach
greedy
,
sortings
800
x45874
514A
Chewbaсca and Number
greedy
,
implementation
1200
x45279
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44828
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x44273
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44016
1873B
Good Kid
brute force
,
greedy
,
math
800
x43719
1374C
Move Brackets
greedy
,
strings
1000
x43156
1857A
Array Coloring
greedy
,
math
800
x43037
1399B
Gifts Fixing
greedy
800
x42275
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41394
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41240
1472A
Cards for Friends
greedy
,
math
800
x40723
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40576
1921A
Square
greedy
,
math
800
x39558
1807B
Grab the Candies
greedy
800
x39497
1927A
Make it White
greedy
,
strings
800
x39264
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38869
1348A
Phoenix and Balance
greedy
,
math
800
x38284
1878A
How Much Does Daytona Cost?
greedy
800
x38277
1342A
Road To Zero
greedy
,
math
1000
x38197
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38188
1358A
Park Lighting
greedy
,
math
800
x38007
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x37949
556A
Case of the Zeros and Ones
greedy
900
x37752
149A
Business trip
greedy
,
implementation
,
sortings
900
x37555
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37082
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36608
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x36219
1385B
Restore the Permutation by Merger
greedy
800
x36208
550A
Two Substrings
brute force
,
dp
,
greedy
,
implementation
,
strings
1500
x36138
1537A
Arithmetic Array
greedy
,
math
800
x35846
1538A
Stone Game
brute force
,
dp
,
greedy
800
x35645
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x35144
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x34933
1660A
Vasya and Coins
greedy
,
math
800
x34916
978B
File Name
greedy
,
strings
800
x34867
1476A
K-divisible Sum
binary search
,
constructive algorithms
,
greedy
,
math
1000
x34857
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x34740
1858A
Buttons
games
,
greedy
,
math
800
x33884
320A
Magic Numbers
brute force
,
greedy
900
x33455
1335C
Two Teams Composing
binary search
,
greedy
,
implementation
,
sortings
1100
x33162
1337B
Kana and Dragon Quest game
greedy
,
implementation
,
math
900
x32982
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32821
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32789
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x32683
1692B
All Distinct
greedy
,
sortings
800
x32622
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x32439
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x32327
1294C
Product of Three Numbers
greedy
,
math
,
number theory
1300
x32110
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x31947
1921B
Arranging Cats
greedy
,
implementation
800
x31760
1360C
Similar Pairs
constructive algorithms
,
graph matchings
,
greedy
,
sortings
1100
x31612
1675A
Food for Animals
greedy
,
math
800
x31380
1716A
2-3 Moves
greedy
,
math
800
x31273
1462C
Unique Number
brute force
,
greedy
,
math
900
x31102
1538B
Friends and Candies
greedy
,
math
800
x30959
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x30940
1490A
Dense Array
greedy
,
math
800
x30562
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30532
567A
Lineland Mail
greedy
,
implementation
900
x30439
1927B
Following the String
constructive algorithms
,
greedy
,
strings
900
x29988
1811A
Insert Digit
greedy
,
math
,
strings
800
x29913
1714C
Minimum Varied Number
greedy
800
x29852
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29773
1931B
Make Equal
greedy
800
x29666
1535B
Array Reodering
brute force
,
greedy
,
math
,
number theory
,
sortings
900
x29503
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29341
1328C
Ternary XOR
greedy
,
implementation
1200
x29296
1729B
Decode String
greedy
,
strings
800
x29249
1714B
Remove Prefix
data structures
,
greedy
,
implementation
800
x29213
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x29077
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x29053
1541A
Pretty Permutations
constructive algorithms
,
greedy
,
implementation
800
x28952
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28921
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