Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x15122
1898A
Milica and String
brute force
,
implementation
,
strings
800
x15103
1647B
Madoka and the Elegant Gift
brute force
,
constructive algorithms
,
graphs
,
implementation
1200
x15081
1249C1
Good Numbers (easy version)
brute force
,
greedy
,
implementation
1300
x15080
1293A
ConneR and the A.R.C. Markland-N
binary search
,
brute force
,
implementation
1100
x14979
1415A
Prison Break
brute force
,
math
800
x14929
1450B
Balls of Steel
brute force
,
geometry
,
greedy
1000
x14888
1419D2
Sage's Birthday (hard version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x14783
1271A
Suits
brute force
,
greedy
,
math
800
x14689
1637B
MEX and Array
brute force
,
dp
,
greedy
,
math
1100
x14619
908A
New Year and Counting Cards
brute force
,
implementation
800
x14617
1519D
Maximum Sum of Products
brute force
,
dp
,
implementation
,
math
,
two pointers
1600
x14610
1948C
Arrow Path
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
shortest paths
1300
x14539
1826A
Trust Nobody
brute force
,
greedy
,
implementation
,
sortings
1200
x14533
1784A
Monsters (easy version)
brute force
,
greedy
1000
x14530
96B
Lucky Numbers (easy)
binary search
,
bitmasks
,
brute force
1300
x14487
1582C
Grandma Capa Knits a Scarf
brute force
,
data structures
,
greedy
,
strings
,
two pointers
1200
x14473
1732A
Bestie
brute force
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x14441
1667A
Make it Increasing
brute force
,
greedy
,
math
1300
x14370
1397B
Power Sequence
brute force
,
math
,
number theory
,
sortings
1500
x14366
47A
Triangular numbers
brute force
,
math
800
x14343
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14337
1673B
A Perfectly Balanced String?
brute force
,
greedy
,
strings
1100
x14323
1882B
Sets and Union
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1300
x14318
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14264
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x14260
1530C
Pursuit
binary search
,
brute force
,
greedy
,
sortings
1200
x14254
488A
Giga Tower
brute force
1100
x14061
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14033
1494B
Berland Crossword
bitmasks
,
brute force
,
greedy
,
implementation
1400
x13956
1763B
Incinerate
binary search
,
brute force
,
data structures
,
implementation
,
math
,
sortings
1200
x13941
215A
Bicycle Chain
brute force
,
implementation
900
x13932
1623B
Game on Ranges
brute force
,
dfs and similar
,
implementation
,
sortings
1100
x13911
1553B
Reverse String
brute force
,
dp
,
hashing
,
implementation
,
strings
1300
x13837
1810C
Make It Permutation
brute force
,
greedy
,
sortings
1300
x13818
914A
Perfect Squares
brute force
,
implementation
,
math
900
x13813
1305A
Kuroni and the Gifts
brute force
,
constructive algorithms
,
greedy
,
sortings
800
x13789
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x13758
1060A
Phone Numbers
brute force
800
x13724
1913C
Game with Multiset
binary search
,
bitmasks
,
brute force
,
greedy
1300
x13723
1487C
Minimum Ties
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
1500
x13712
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13695
1930B
Permutation Printing
brute force
,
constructive algorithms
,
math
1000
x13688
1305C
Kuroni and Impossible Calculation
brute force
,
combinatorics
,
math
,
number theory
1600
x13632
1821C
Tear It Apart
brute force
,
implementation
,
math
,
strings
1300
x13616
1491B
Minimal Cost
brute force
,
math
1200
x13580
298B
Sail
brute force
,
greedy
,
implementation
1200
x13558
1395C
Boboniu and Bit Operations
bitmasks
,
brute force
,
dp
,
greedy
1600
x13533
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13407
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x13396
1644C
Increase Subarray Sums
brute force
,
dp
,
greedy
,
implementation
1400
x13385
1279B
Verse For Santa
binary search
,
brute force
,
implementation
1300
x13362
1902B
Getting Points
binary search
,
brute force
,
greedy
1100
x13358
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13319
448D
Multiplication Table
binary search
,
brute force
1800
x13310
1676H1
Maximum Crossings (Easy Version)
brute force
1400
x13305
1792C
Min Max Sort
binary search
,
brute force
,
greedy
,
math
,
two pointers
1500
x13290
1559D1
Mocha and Diana (Easy Version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
1400
x13256
1781B
Going to the Cinema
brute force
,
greedy
,
sortings
1000
x13241
1646C
Factorials and Powers of Two
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
math
1500
x13233
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x13232
1340A
Nastya and Strange Generator
brute force
,
data structures
,
greedy
,
implementation
1500
x13145
1711B
Party
brute force
,
graphs
1300
x13131
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13130
987C
Three displays
brute force
,
dp
,
implementation
1400
x13111
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x13085
1705C
Mark and His Unfinished Essay
brute force
,
implementation
1400
x12990
841A
Generous Kefa
brute force
,
implementation
900
x12936
1945C
Left and Right Houses
brute force
1200
x12932
796A
Buying A House
brute force
,
implementation
800
x12842
554A
Kyoya and Photobooks
brute force
,
math
,
strings
900
x12732
1833D
Flipper
brute force
,
constructive algorithms
,
greedy
1400
x12719
1650D
Twist the Permutation
brute force
,
constructive algorithms
,
implementation
,
math
1300
x12695
1364C
Ehab and Prefix MEXs
brute force
,
constructive algorithms
,
greedy
1600
x12682
1534A
Colour the Flag
brute force
,
implementation
800
x12591
1444A
Division
brute force
,
math
,
number theory
1500
x12579
1379B
Dubious Cyrpto
binary search
,
brute force
,
math
,
number theory
1500
x12482
1554B
Cobb
bitmasks
,
brute force
,
greedy
,
math
1700
x12438
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12421
271B
Prime Matrix
binary search
,
brute force
,
math
,
number theory
1300
x12421
1622C
Set or Decrease
binary search
,
brute force
,
greedy
,
sortings
1600
x12405
9C
Hexadecimal's Numbers
brute force
,
implementation
,
math
1200
x12388
1461B
Find the Spruce
brute force
,
dp
,
implementation
1400
x12363
1499C
Minimum Grid Path
brute force
,
data structures
,
greedy
,
math
1500
x12350
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12336
1902C
Insert and Equalize
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1300
x12318
1759D
Make It Round
brute force
,
number theory
1400
x12302
1537E1
Erase and Extend (Easy Version)
binary search
,
brute force
,
dp
,
greedy
,
hashing
,
implementation
,
string suffix structures
,
strings
,
two pointers
1600
x12289
1632C
Strange Test
binary search
,
bitmasks
,
brute force
,
dp
,
math
1600
x12267
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12245
1474C
Array Destruction
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1700
x12223
1343D
Constant Palindrome Sum
brute force
,
data structures
,
greedy
,
two pointers
1700
x12214
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12176
460B
Little Dima and Equation
brute force
,
implementation
,
math
,
number theory
1500
x12101
1819A
Constructive Problem
brute force
,
greedy
1300
x12093
1950E
Nearly Shortest Repeating Substring
brute force
,
implementation
,
number theory
,
strings
1500
x12088
1800E2
Unforgivable Curse (hard version)
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
strings
1500
x12086
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12036
32A
Reconnaissance
brute force
800
x12025
122B
Lucky Substring
brute force
,
implementation
1000
x12014
←
1
2
3
4
5
6
...
15
16
→
→ Pay attention
Before contest
Codeforces Round 945 (Div. 2)
08:27:41
Register now »
*has extra registration
→ 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
Add tag
User lists
Name