Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
31:17:54
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
data structures
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
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1108E2
Array and Segments (Hard version)
data structures
,
implementation
2100
x2102
1881G
Anya and the Mysterious String
binary search
,
data structures
2000
x2095
379F
New Year Tree
data structures
,
divide and conquer
,
trees
2400
x2093
1436E
Complicated Computations
binary search
,
data structures
,
two pointers
2400
x2090
1553F
Pairwise Modulo
data structures
,
math
2300
x2084
487E
Tourists
data structures
,
dfs and similar
,
graphs
,
trees
3200
x2082
1251E1
Voting (Easy Version)
data structures
,
dp
,
greedy
2300
x2074
1358E
Are You Fired?
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x2067
1562D2
Two Hundred Twenty One (hard version)
data structures
,
math
2200
x2066
930C
Teodor is not a liar!
data structures
,
dp
1900
x2061
1527E
Partition Game
binary search
,
data structures
,
divide and conquer
,
dp
2500
x2050
515E
Drazil and Park
data structures
2300
x2039
1916E
Happy Life in University
data structures
,
dfs and similar
,
greedy
,
trees
2300
x2036
1837F
Editorial for Two
binary search
,
data structures
,
greedy
,
implementation
2400
x2033
19D
Points
data structures
2800
x2033
1100F
Ivan and Burgers
data structures
,
divide and conquer
,
greedy
,
math
2500
x2028
348C
Subset Sums
brute force
,
data structures
2500
x2028
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2019
1266E
Spaceship Solitaire
data structures
,
greedy
,
implementation
2100
x2013
1369E
DeadLee
data structures
,
dfs and similar
,
greedy
,
implementation
,
sortings
2400
x2011
486E
LIS of Sequence
data structures
,
dp
,
greedy
,
hashing
,
math
2200
x2011
369E
Valera and Queries
binary search
,
data structures
2200
x2009
1834E
MEX of LCM
binary search
,
data structures
,
implementation
,
math
,
number theory
2300
x2000
601B
Lipshitz Sequence
data structures
,
math
2100
x1998
1801D
The way home
binary search
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
,
sortings
2100
x1997
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x1994
1783E
Game of the Year
brute force
,
data structures
,
math
,
number theory
2300
x1993
1070C
Cloud Computing
data structures
,
greedy
2000
x1988
5E
Bindian Signalizing
data structures
2400
x1987
1898E
Sofia and Strings
data structures
,
greedy
,
sortings
,
strings
,
two pointers
2200
x1983
1481E
Sorting Books
data structures
,
dp
,
greedy
2500
x1979
981E
Addition on Segments
bitmasks
,
data structures
,
divide and conquer
,
dp
2200
x1976
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x1976
377B
Preparing for the Contest
binary search
,
data structures
,
greedy
,
sortings
1900
x1967
1654E
Arithmetic Operations
brute force
,
data structures
,
graphs
,
math
2300
x1966
631D
Messenger
data structures
,
hashing
,
implementation
,
string suffix structures
,
strings
2100
x1963
235C
Cyclical Quest
data structures
,
string suffix structures
,
strings
2700
x1961
1919F1
Wine Factory (Easy Version)
data structures
,
greedy
2300
x1959
875D
High Cry
binary search
,
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
2200
x1959
1705E
Mark and Professor Koro
binary search
,
bitmasks
,
brute force
,
combinatorics
,
data structures
,
greedy
2300
x1955
103D
Time to Raid Cowavans
brute force
,
data structures
,
sortings
2100
x1951
1208E
Let Them Slide
data structures
,
implementation
2200
x1948
1326E
Bombs
data structures
,
two pointers
2400
x1947
1625D
Binary Spiders
bitmasks
,
data structures
,
implementation
,
math
,
sortings
,
trees
2300
x1946
1335F
Robots on a Grid
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
matrices
2200
x1946
1056E
Check Transcription
brute force
,
data structures
,
hashing
,
strings
2100
x1943
555C
Case of Chocolate
data structures
2200
x1940
1896E
Permutation Sorting
data structures
,
sortings
2100
x1935
637D
Running with Obstacles
*special problem
,
data structures
,
dp
,
greedy
1600
x1935
12D
Ball
data structures
,
sortings
2400
x1934
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x1932
896E
Welcome home, Chtholly
data structures
,
dsu
3100
x1930
912D
Fishes
data structures
,
graphs
,
greedy
,
probabilities
,
shortest paths
2100
x1929
1223F
Stack Exterminable Arrays
data structures
,
divide and conquer
,
dp
,
hashing
2600
x1922
1392F
Omkar and Landslide
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
2400
x1918
580E
Kefa and Watch
data structures
,
hashing
,
strings
2500
x1917
547E
Mike and Friends
data structures
,
string suffix structures
,
strings
,
trees
2800
x1906
1601C
Optimal Insertion
data structures
,
divide and conquer
,
dp
,
greedy
,
sortings
2300
x1898
1442D
Sum
data structures
,
divide and conquer
,
dp
,
greedy
2800
x1897
85D
Sum of Medians
binary search
,
brute force
,
data structures
,
implementation
2300
x1894
1380E
Merging Towers
data structures
,
dsu
,
implementation
,
trees
2300
x1890
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x1885
1795E
Explosions?
binary search
,
data structures
,
dp
,
greedy
,
math
2200
x1881
884D
Boxes And Balls
data structures
,
greedy
2300
x1862
1408E
Avoid Rainbow Cycles
data structures
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1857
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x1848
1485F
Copy or Prefix Sum
combinatorics
,
data structures
,
dp
,
sortings
2400
x1830
1841E
Fill the Matrix
data structures
,
greedy
,
math
2200
x1827
765F
Souvenirs
data structures
3100
x1822
1609E
William The Oblivious
bitmasks
,
data structures
,
dp
,
matrices
2400
x1809
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1809
1416D
Graph and Queries
data structures
,
dsu
,
graphs
,
implementation
,
trees
2600
x1803
748D
Santa Claus and a Palindrome
constructive algorithms
,
data structures
,
greedy
2100
x1801
1093G
Multidimensional Queries
bitmasks
,
data structures
2300
x1800
689E
Mike and Geometry Problem
combinatorics
,
data structures
,
dp
,
geometry
,
implementation
2000
x1792
1114F
Please, another Queries on Array?
bitmasks
,
data structures
,
divide and conquer
,
math
,
number theory
2400
x1788
1521D
Nastia Plays with a Tree
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
trees
2500
x1782
980E
The Number Games
data structures
,
greedy
,
trees
2200
x1776
1252K
Addition Robot
data structures
,
math
,
matrices
2100
x1774
1638E
Colorful Operations
brute force
,
data structures
,
implementation
2400
x1767
785E
Anton and Permutation
brute force
,
data structures
2200
x1760
1552E
Colors and Intervals
constructive algorithms
,
data structures
,
greedy
,
sortings
2300
x1759
314C
Sereja and Subsequences
data structures
,
dp
2000
x1757
177D2
Encrypting Messages
data structures
1500
x1754
240F
TorCoder
data structures
2600
x1753
797D
Broken BST
data structures
,
dfs and similar
2100
x1744
1827B2
Range Sorting (Hard Version)
binary search
,
data structures
,
dp
,
greedy
2400
x1731
1194E
Count The Rectangles
bitmasks
,
brute force
,
data structures
,
geometry
,
sortings
2200
x1717
1691E
Number of Groups
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
2300
x1712
1912A
Accumulator Apex
data structures
,
implementation
,
sortings
1900
x1711
75D
Big Maximum Sum
data structures
,
dp
,
greedy
,
implementation
,
math
,
trees
2000
x1711
79C
Beaver
data structures
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x1709
1720D2
Xor-Subsequence (hard version)
bitmasks
,
data structures
,
dp
,
strings
,
trees
2400
x1708
1028D
Order book
combinatorics
,
data structures
,
greedy
2100
x1707
223B
Two Strings
data structures
,
dp
,
strings
1900
x1707
1621E
New School
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
2300
x1697
1062E
Company
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
2300
x1692
1748E
Yet Another Array Counting Problem
binary search
,
data structures
,
divide and conquer
,
dp
,
flows
,
math
,
trees
2300
x1677
995C
Leaving the Bar
brute force
,
data structures
,
geometry
,
greedy
,
math
,
sortings
2300
x1673
979D
Kuro and GCD and XOR and SUM
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
number theory
,
strings
,
trees
2200
x1671
←
1
2
...
6
7
8
9
10
...
16
17
→
User lists
Name