Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Codeforces functionality may be limited from
June 18, 19:00 (UTC)
to
June 19, 3:00 AM (UTC)
due to technical maintenance. Polygon will work as usual.
×
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1946A
Median of an Array
greedy
,
implementation
,
sortings
800
x24528
1945H
GCD is Greater
brute force
,
data structures
,
math
,
number theory
2600
x548
1945G
Cook and Porridge
binary search
,
constructive algorithms
,
data structures
,
implementation
2500
x665
1945F
Kirill and Mushrooms
data structures
,
sortings
1900
x3765
1945E
Binary Search
binary search
,
constructive algorithms
,
greedy
1700
x7338
1945D
Seraphim the Owl
dp
,
greedy
1300
x12936
1945C
Left and Right Houses
brute force
1200
x13566
1945B
Fireworks
math
,
number theory
900
x20691
1945A
Setting up Camp
greedy
,
math
800
x25799
1944B
Equal XOR
bitmasks
,
constructive algorithms
1100
x14961
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x22062
1943F
Minimum Hamming Distance
dp
3500
x88
1943E2
MEX Game 2 (Hard Version)
binary search
,
greedy
,
two pointers
3300
x257
1943E1
MEX Game 2 (Easy Version)
binary search
,
brute force
,
greedy
2900
x388
1943D2
Counting Is Fun (Hard Version)
combinatorics
,
dp
2800
x638
1943D1
Counting Is Fun (Easy Version)
brute force
,
combinatorics
,
dp
,
math
2400
x1310
1943C
Tree Compass
constructive algorithms
,
dfs and similar
,
greedy
,
trees
2300
x1890
1943B
Non-Palindromic Substring
hashing
,
implementation
,
math
,
strings
2000
x3473
1943A
MEX Game 1
games
,
greedy
1300
x16116
1942H
Farmer John's Favorite Intern
data structures
,
dp
,
flows
,
trees
3500
x72
1942G
Bessie and Cards
combinatorics
,
dp
,
math
2800
x396
1942F
Farmer John's Favorite Function
brute force
,
data structures
,
implementation
,
math
2700
x604
1942E
Farm Game
combinatorics
,
games
2300
x1518
1942D
Learning to Paint
binary search
,
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
sortings
2100
x2545
1942C2
Bessie's Birthday Cake (Hard Version)
geometry
,
greedy
,
math
1700
x5716
1942C1
Bessie's Birthday Cake (Easy Version)
geometry
,
greedy
,
math
1300
x10013
1942B
Bessie and MEX
constructive algorithms
,
math
1100
x12848
1942A
Farmer John's Challenge
constructive algorithms
,
math
800
x16267
1941G
Rudolf and Subway
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2000
x3136
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5414
1941E
Rudolf and k Bridges
binary search
,
data structures
,
dp
,
two pointers
1600
x8582
1941D
Rudolf and the Ball Game
dfs and similar
,
dp
,
implementation
1200
x17171
1941C
Rudolf and the Ugly String
dp
,
greedy
,
strings
900
x30781
1941B
Rudolf and 121
brute force
,
dp
,
greedy
,
math
1000
x27424
1941A
Rudolf and the Ticket
brute force
,
math
800
x40045
1938M
Zig-zag
3500
x46
1938L
XOR Operations
2800
x255
1938K
Tree Quiz
2400
x541
1938J
There and Back Again
2100
x1136
1938I
Symmetric Boundary
2800
x55
1938H
Pho Restaurant
1600
x1912
1938G
Personality Test
2300
x888
1938F
Forming Groups
2400
x669
1938E
Duplicates
2200
x876
1938D
Bánh Bò
3300
x81
1938C
Bit Counting Sequence
1900
x1293
1938B
Attraction Score
3000
x152
1938A
Antiparticle Antiphysics
3500
x39
1937B
Binary Path
dp
,
greedy
,
implementation
1300
x13677
1937A
Shuffle Party
implementation
,
math
800
x22048
1936F
Grand Finale: Circles
binary search
,
geometry
3300
x72
1936E
Yet Yet Another Permutation Problem
divide and conquer
,
fft
,
math
3400
x99
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x442
1936C
Pokémon Arena
data structures
,
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
2400
x1150
1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2550
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x6790
1935F
Andrey's Tree
binary search
,
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
implementation
,
trees
2800
x405
1935E
Distance Learning Courses in MAC
bitmasks
,
brute force
,
data structures
,
greedy
,
math
2400
x1214
1935D
Exam in MAC
binary search
,
combinatorics
,
implementation
,
math
1800
x7581
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7416
1935B
Informatics in MAC
constructive algorithms
1200
x17101
1935A
Entertainment in MAC
constructive algorithms
,
strings
800
x26275
1934E
Weird LCM Operations
brute force
,
constructive algorithms
,
number theory
3000
x193
1934D2
XOR Break --- Game Version
bitmasks
,
games
,
greedy
,
interactive
2400
x1237
1934D1
XOR Break --- Solo Version
bitmasks
,
constructive algorithms
,
greedy
2100
x3191
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x6230
1934B
Yet Another Coin Problem
brute force
,
dp
,
greedy
,
math
1200
x17326
1934A
Too Min Too Max
greedy
,
math
800
x24068
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
,
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
math
2300
x904
1933F
Turtle Mission: Robot and the Earthquake
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2274
1933E
Turtle vs. Rabbit Race: Optimal Trainings
binary search
,
implementation
,
math
,
ternary search
1500
x10149
1933D
Turtle Tenacity: Continual Mods
constructive algorithms
,
greedy
,
math
,
number theory
,
sortings
1200
x18484
1933C
Turtle Fingers: Count the Values of k
brute force
,
implementation
,
math
,
number theory
1100
x21181
1933B
Turtle Math: Fast Three Task
implementation
,
math
,
number theory
800
x30709
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x36301
1932G
Moving Platforms
graphs
,
math
,
number theory
,
shortest paths
2300
x917
1932F
Feed Cats
data structures
,
dp
,
sortings
1900
x3577
1932E
Final Countdown
implementation
,
math
,
number theory
1600
x7251
1932D
Card Game
greedy
,
implementation
1400
x10378
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x14338
1932B
Chaya Calendar
number theory
1100
x19139
1932A
Thorns and Coins
dp
,
greedy
,
implementation
800
x27622
1931G
One-Dimensional Puzzle
combinatorics
,
math
,
number theory
2000
x2538
1931F
Chat Screenshots
combinatorics
,
dfs and similar
,
graphs
1700
x7227
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x13952
1931D
Divisible Pairs
combinatorics
,
math
,
number theory
1300
x16643
1931C
Make Equal Again
brute force
,
greedy
,
math
1000
x26946
1931B
Make Equal
greedy
800
x30686
1931A
Recovering a Small String
brute force
,
strings
800
x34272
1930I
Counting Is Fun
combinatorics
3500
x57
1930H
Interactive Mex Tree
constructive algorithms
,
dfs and similar
,
interactive
,
trees
3300
x134
1930G
Prefix Max Set Counting
data structures
,
dp
,
trees
3100
x313
1930F
Maximize the Difference
bitmasks
,
brute force
,
dfs and similar
2700
x632
1930E
2..3...4.... Wonderful! Wonderful!
combinatorics
,
dp
,
math
2400
x1032
1930D2
Sum over all Substrings (Hard Version)
bitmasks
,
divide and conquer
,
dp
,
dsu
,
greedy
,
implementation
,
strings
2100
x2441
1930D1
Sum over all Substrings (Easy Version)
brute force
,
dp
,
greedy
,
strings
1800
x3812
1930C
Lexicographically Largest
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
1700
x6589
1930B
Permutation Printing
brute force
,
constructive algorithms
,
math
1000
x14125
1930A
Maximise The Score
greedy
,
sortings
800
x17648
1929F
Sasha and the Wedding Binary Search Tree
brute force
,
combinatorics
,
data structures
,
dfs and similar
,
math
,
trees
2300
x1671
←
1
2
3
4
5
...
93
94
→
→ Pay attention
Before contest
Codeforces Round 954 (Div. 3)
5 days
→ Filter Problems
Difficulty:
—
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