Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
13 days
Register now »
Contest is running
Kotlin Heroes: Practice 10
6 days
Register now »
→ 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
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
x14419
1970G2
Min-Fund Prison (Medium)
brute force
,
dfs and similar
,
dp
,
graphs
,
trees
x261
1970D1
Arithmancy (Easy)
brute force
,
constructive algorithms
,
interactive
,
strings
x321
1970A2
Balanced Unshuffle (Medium)
brute force
,
constructive algorithms
,
trees
x269
1968G2
Division + LCP (hard version)
binary search
,
brute force
,
data structures
,
dp
,
hashing
,
math
,
string suffix structures
,
strings
x1110
1968D
Permutation Game
brute force
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
x9814
1968A
Maximize?
brute force
,
math
,
number theory
x23829
1967F
Next and Prev
brute force
,
data structures
,
implementation
x20
1967C
Fenwick Tree
bitmasks
,
brute force
,
combinatorics
,
data structures
,
dp
,
math
,
trees
x1115
1967B2
Reverse Card (Hard Version)
brute force
,
math
,
number theory
x2658
1967B1
Reverse Card (Easy Version)
brute force
,
math
,
number theory
x8570
1957E
Carousel of Combinations
brute force
,
combinatorics
,
dp
,
math
,
number theory
2400
x959
1957D
A BIT of an Inequality
bitmasks
,
brute force
,
dp
,
math
1900
x3430
1956E2
Nene vs. Monsters (Hard Version)
brute force
,
greedy
,
implementation
,
math
2700
x638
1956E1
Nene vs. Monsters (Easy Version)
brute force
,
implementation
,
math
2500
x1174
1956D
Nene and the Mex Operator
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
dp
,
greedy
,
implementation
,
math
2000
x3090
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x18544
1955H
The Most Reckless Defense
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
flows
,
graph matchings
,
shortest paths
2300
x984
1955G
GCD on a grid
brute force
,
dfs and similar
,
dp
,
implementation
,
math
,
number theory
1900
x3358
1955E
Long Inversions
brute force
,
greedy
,
implementation
,
sortings
1700
x6991
1952J
Help, what does it mean to be "Based"
brute force
,
constructive algorithms
,
expression parsing
,
implementation
,
sortings
x688
1952F
Grid
brute force
x1634
1952C
They Have Fooled
brute force
,
schedules
x2709
1951E
No Palindromes
brute force
,
constructive algorithms
,
divide and conquer
,
greedy
,
hashing
,
implementation
,
math
,
strings
2000
x2971
1950F
0, 1, 2, Tree!
bitmasks
,
brute force
,
greedy
,
implementation
,
trees
1700
x7471
1950E
Nearly Shortest Repeating Substring
brute force
,
implementation
,
number theory
,
strings
1500
x11766
1950D
Product of Binary Decimals
brute force
,
dp
,
implementation
,
number theory
1100
x20031
1949E
Damage per Second
brute force
,
math
2900
x79
1949B
Charming Meals
binary search
,
brute force
,
greedy
,
sortings
1500
x1700
1949A
Grove
brute force
,
dfs and similar
,
dp
,
geometry
,
probabilities
3300
x80
1948G
MST with Matching
bitmasks
,
brute force
,
dsu
,
graph matchings
,
trees
3100
x598
1948E
Clique Partition
brute force
,
constructive algorithms
,
graphs
,
greedy
,
implementation
2100
x2602
1948D
Tandem Repeats?
brute force
,
strings
,
two pointers
1700
x8141
1948C
Arrow Path
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
shortest paths
1300
x14330
1948B
Array Fix
brute force
,
dp
,
greedy
,
implementation
1100
x20377
1948A
Special Characters
brute force
,
constructive algorithms
800
x26186
1946D
Birthday Gift
bitmasks
,
brute force
,
constructive algorithms
,
greedy
,
implementation
1900
x3984
1945H
GCD is Greater
brute force
,
data structures
,
math
,
number theory
2600
x483
1945C
Left and Right Houses
brute force
1200
x12715
1943E1
MEX Game 2 (Easy Version)
binary search
,
brute force
,
greedy
2900
x356
1943D1
Counting Is Fun (Easy Version)
brute force
,
combinatorics
,
dp
,
math
2400
x1243
1942F
Farmer John's Favorite Function
brute force
,
data structures
,
implementation
,
math
2700
x553
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x26319
1941A
Rudolf and the Ticket
brute force
,
math
800
x38785
1935E
Distance Learning Courses in MAC
bitmasks
,
brute force
,
data structures
,
greedy
,
math
2400
x1164
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7093
1934E
Weird LCM Operations
brute force
,
constructive algorithms
,
number theory
3000
x182
1934B
Yet Another Coin Problem
brute force
,
dp
,
greedy
,
math
1200
x16573
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
,
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
math
2300
x863
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x20412
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x13610
1931C
Make Equal Again
brute force
,
greedy
,
math
1000
x25974
1931A
Recovering a Small String
brute force
,
strings
800
x33480
1930F
Maximize the Difference
bitmasks
,
brute force
,
dfs and similar
2700
x611
1930D1
Sum over all Substrings (Easy Version)
brute force
,
dp
,
greedy
,
strings
1800
x3675
1930B
Permutation Printing
brute force
,
constructive algorithms
,
math
1000
x13552
1929F
Sasha and the Wedding Binary Search Tree
brute force
,
combinatorics
,
data structures
,
dfs and similar
,
math
,
trees
2300
x1621
1929E
Sasha and the Happy Tree Cutting
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
2300
x1505
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13188
1928E
Modular Sequence
brute force
,
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
,
number theory
2300
x1537
1928D
Lonely Mountain Dungeons
brute force
,
data structures
,
greedy
,
math
,
ternary search
1900
x3724
1928C
Physical Education Lesson
brute force
,
math
,
number theory
1600
x7448
1927D
Find the Different Ones!
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
two pointers
1300
x18212
1927C
Choose the Different Ones!
brute force
,
greedy
,
math
1000
x25501
1926F
Vlad and Avoiding X
bitmasks
,
brute force
,
dfs and similar
,
dp
,
implementation
2200
x1475
1925B
A Balanced Problemset?
brute force
,
greedy
,
math
,
number theory
1200
x18175
1923F
Shrink-Reverse
binary search
,
brute force
,
greedy
,
hashing
,
implementation
,
string suffix structures
,
strings
2800
x328
1922D
Berserk Monsters
brute force
,
data structures
,
dsu
,
implementation
,
math
1900
x5217
1921G
Mischievous Shooter
brute force
,
data structures
,
divide and conquer
,
dp
,
implementation
2200
x1119
1921F
Sum of Progression
brute force
,
data structures
,
dp
,
implementation
,
math
1900
x3430
1921E
Eat the Chip
brute force
,
games
,
greedy
,
math
1600
x8891
1920F1
Smooth Sailing (Easy Version)
binary search
,
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
shortest paths
2500
x872
1920D
Array Repetition
binary search
,
brute force
,
dsu
,
implementation
,
math
1900
x5084
1920C
Partitioning the Array
brute force
,
math
,
number theory
1600
x11783
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x26444
1917C
Watering an Array
brute force
,
greedy
,
implementation
,
math
1600
x9369
1917B
Erase First or Second Letter
brute force
,
combinatorics
,
data structures
,
dp
,
strings
1100
x19360
1916H1
Matrix Rank (Easy Version)
brute force
,
combinatorics
,
dp
,
math
,
matrices
2700
x584
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7881
1915B
Not Quite Latin Square
bitmasks
,
brute force
,
implementation
800
x38452
1914G1
Light Bulbs (Easy Version)
brute force
,
combinatorics
,
dfs and similar
,
dp
,
dsu
,
graphs
,
math
,
trees
2100
x1671
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x11122
1914D
Three Activities
brute force
,
dp
,
greedy
,
implementation
,
sortings
1200
x18115
1913C
Game with Multiset
binary search
,
bitmasks
,
brute force
,
greedy
1300
x13618
1909F1
Small Permutation Problem (Easy Version)
brute force
,
combinatorics
,
dp
,
math
2200
x1632
1909E
Multiple Lamps
bitmasks
,
brute force
,
constructive algorithms
,
math
,
number theory
2400
x1245
1907G
Lights
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
2200
x1742
1907E
Good Triples
brute force
,
combinatorics
,
number theory
1600
x8776
1906A
Easy As ABC
brute force
1000
x3520
1905F
Field Should Not Be Empty
brute force
,
data structures
,
divide and conquer
2600
x451
1904D1
Set To Max (Easy Version)
brute force
,
constructive algorithms
,
greedy
1600
x5659
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x10566
1904A
Forked!
brute force
,
implementation
900
x15803
1903D1
Maximum And Queries (easy version)
binary search
,
bitmasks
,
brute force
,
greedy
1700
x5052
1903B
StORage room
bitmasks
,
brute force
,
constructive algorithms
,
greedy
1200
x11323
1903A
Halloumi Boxes
brute force
,
greedy
,
sortings
800
x24022
1902C
Insert and Equalize
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1300
x12214
1902B
Getting Points
binary search
,
brute force
,
greedy
1100
x13295
1900D
Small GCD
bitmasks
,
brute force
,
dp
,
math
,
number theory
2000
x3688
1899B
250 Thousand Tons of TNT
brute force
,
implementation
,
number theory
1100
x18053
←
1
2
3
...
15
16
→
User lists
Name