Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Please read
the new rule regarding the restriction on the use of AI tools
.
×
→ Pay attention
Before contest
Codeforces Round 978 (Div. 2)
6 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
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1054D
Changing Array
greedy
,
implementation
1900
x2247
1054C
Candies Distribution
constructive algorithms
,
implementation
1500
x4282
1054B
Appending Mex
implementation
1000
x6589
1054A
Elevator or Stairs?
implementation
800
x9056
1053E
Euler tour
constructive algorithms
,
trees
3500
x202
1051G
Distinctification
data structures
,
dsu
,
greedy
2900
x396
1051F
The Shortest Statement
graphs
,
shortest paths
,
trees
2400
x2903
1051E
Vasya and Big Integers
binary search
,
data structures
,
dp
,
hashing
,
strings
2600
x951
1051D
Bicolorings
bitmasks
,
dp
1700
x7402
1051C
Vasya and Multisets
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9277
1051B
Relatively Prime Pairs
greedy
,
math
,
number theory
1000
x17138
1051A
Vasya And Password
greedy
,
implementation
,
strings
1200
x8417
1047B
Cover Points
geometry
,
math
900
x17183
1047A
Little C Loves 3 I
math
800
x19890
1046I
Say Hello
geometry
2300
x513
1046F
Splitting money
implementation
1400
x2773
1046C
Space Formula
greedy
1400
x3107
1045J
Moonwalk challenge
data structures
,
strings
,
trees
2600
x170
1045I
Palindrome Pairs
hashing
,
strings
1600
x4438
1045H
Self-exploration
math
2400
x375
1045G
AI robots
data structures
2200
x1655
1045F
Shady Lady
geometry
,
math
3400
x101
1045E
Ancient civilizations
constructive algorithms
,
geometry
3200
x234
1045D
Interstellar battle
math
,
probabilities
,
trees
2200
x671
1045C
Hyperspace Highways
dfs and similar
,
graphs
,
trees
2300
x701
1045B
Space Isaac
hashing
,
number theory
2400
x514
1045A
Last chance
data structures
,
flows
,
graph matchings
,
graphs
,
trees
2500
x534
1044F
DFS
data structures
2700
x569
1044E
Grid Sort
implementation
3100
x119
1044D
Deduction Queries
data structures
,
dsu
2400
x1006
1044C
Optimal Polygon Perimeter
dp
,
geometry
2100
x1348
1044B
Intersecting Subtrees
dfs and similar
,
interactive
,
trees
1900
x1571
1044A
The Tower is Going Home
binary search
,
two pointers
1700
x2898
1043G
Speckled Band
data structures
,
divide and conquer
,
hashing
,
string suffix structures
,
strings
3500
x237
1043F
Make It One
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
,
shortest paths
2500
x2371
1043E
Train Hard, Win Easy
constructive algorithms
,
greedy
,
math
,
sortings
1900
x2732
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4442
1043C
Smallest Word
constructive algorithms
,
greedy
,
implementation
1500
x6872
1043B
Lost Array
implementation
1200
x6277
1043A
Elections
implementation
,
math
800
x10785
1042F
Leaf Sets
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1303
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1768
1042D
Petya and Array
data structures
,
divide and conquer
,
two pointers
1800
x6210
1042C
Array Product
constructive algorithms
,
greedy
,
math
1700
x4707
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x16053
1042A
Benches
binary search
,
implementation
1100
x12882
1041F
Ray in the tube
data structures
,
divide and conquer
,
dp
,
math
2500
x1493
1041E
Tree Reconstruction
constructive algorithms
,
data structures
,
graphs
,
greedy
1900
x3587
1041D
Glider
binary search
,
data structures
,
two pointers
1700
x5976
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9451
1041B
Buying a TV Set
math
1000
x13959
1041A
Heist
greedy
,
implementation
,
sortings
800
x25029
1040B
Shashlik Cooking
dp
,
greedy
,
math
1300
x7069
1040A
Palindrome Dance
greedy
1000
x9560
1039E
Summer Oenothera Exhibition
data structures
3400
x271
1039D
You Are Given a Tree
data structures
,
dp
,
trees
2800
x1812
1039C
Network Safety
dfs and similar
,
dsu
,
graphs
,
math
,
sortings
2200
x1355
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2364
1039A
Timetable
constructive algorithms
,
data structures
,
greedy
,
math
2300
x785
1038F
Wrap Around
dp
,
strings
2900
x329
1038E
Maximum Matching
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x978
1038D
Slime
dp
,
greedy
,
implementation
1800
x8372
1038C
Gambling
greedy
,
sortings
1300
x9428
1038B
Non-Coprime Partition
constructive algorithms
,
math
1100
x13564
1038A
Equality
implementation
,
strings
800
x14890
1037H
Security
data structures
,
string suffix structures
3200
x1035
1037G
A Game on Strings
games
3200
x303
1037F
Maximum Reduction
combinatorics
,
data structures
,
math
2500
x1146
1037E
Trips
graphs
2200
x2900
1037D
Valid BFS?
dfs and similar
,
graphs
,
shortest paths
,
trees
1700
x14792
1037C
Equalize
dp
,
greedy
,
strings
1300
x18830
1037B
Reach Median
greedy
1300
x10386
1037A
Packets
constructive algorithms
,
greedy
,
math
1300
x11150
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x380
1036F
Relatively Prime Powers
combinatorics
,
math
,
number theory
2400
x1597
1036E
Covered Points
fft
,
geometry
,
number theory
2400
x1645
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x9256
1036C
Classy Numbers
combinatorics
,
dp
1900
x9587
1036B
Diagonal Walking v.2
math
1600
x5699
1036A
Function Height
math
1000
x10125
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x639
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x453
1034C
Region Separation
combinatorics
,
dp
,
number theory
,
trees
2700
x881
1034B
Little C Loves 3 II
brute force
,
constructive algorithms
,
flows
,
graph matchings
2200
x2145
1034A
Enlarge GCD
number theory
1800
x8709
1033G
Chip Game
games
3500
x382
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x389
1033E
Hidden Bipartite Graph
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2800
x638
1033D
Divisors
interactive
,
math
,
number theory
2000
x2390
1033C
Permutation Game
brute force
,
dp
,
games
1600
x5580
1033B
Square Difference
math
,
number theory
1100
x9759
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x13589
1032G
Chattering
2900
x464
1032F
Vasya and Maximum Matching
dp
,
trees
2400
x955
1032E
The Unbearable Lightness of Weights
dp
,
math
2100
x1682
1032D
Barcelonian Distance
geometry
,
implementation
1900
x2813
1032C
Playing Piano
constructive algorithms
,
dp
1700
x3964
1032B
Personalized Cup
1200
x4995
1032A
Kitchen Utensils
900
x6857
1031F
Familiar Operations
brute force
,
graphs
,
math
2800
x276
←
1
2
...
50
51
52
53
54
...
95
96
→
User lists
Name