Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x42155
701C
They Are Everywhere
binary search
,
strings
,
two pointers
1500
x13944
701B
Cells Not Under Attack
data structures
,
math
1200
x11590
701A
Cards
greedy
,
implementation
800
x19200
700E
Cool Slogans
string suffix structures
,
strings
3300
x1130
700D
Huffman Coding on Segment
data structures
,
greedy
3100
x455
700C
Break Up
dfs and similar
,
graphs
2600
x1224
700B
Connecting Universities
dfs and similar
,
dp
,
graphs
,
trees
1800
x3807
700A
As Fast As Possible
binary search
,
math
1900
x3149
699B
One Bomb
implementation
1400
x7515
699A
Launch of Collider
implementation
1000
x15245
698F
Coprime Permutation
combinatorics
,
number theory
3000
x432
698E
Cron
2800
x114
698D
Limak and Shooting Points
brute force
,
geometry
,
math
2600
x510
698C
LRU
bitmasks
,
dp
,
math
,
probabilities
2400
x1283
698B
Fix a Tree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
1700
x5635
698A
Vacations
dp
1400
x28685
697B
Barnicle
brute force
,
implementation
,
math
,
strings
1400
x5672
697A
Pineapple Incident
implementation
,
math
900
x12610
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x120
696E
...Wait for it...
data structures
,
dsu
,
trees
3000
x490
696D
Legen...
data structures
,
dp
,
matrices
,
strings
2500
x1238
696C
PLEASE
combinatorics
,
dp
,
implementation
,
math
,
matrices
2000
x2054
696B
Puzzles
dfs and similar
,
math
,
probabilities
,
trees
1700
x3396
696A
Lorenzo Von Matterhorn
brute force
,
data structures
,
implementation
,
trees
1500
x5993
691F
Couple Cover
brute force
,
dp
,
number theory
2200
x1251
691E
Xor-sequences
matrices
1900
x2397
691D
Swaps in Permutation
dfs and similar
,
dsu
,
math
1700
x5320
691C
Exponential notation
implementation
,
strings
1800
x2490
691B
s-palindrome
implementation
,
strings
1600
x4741
691A
Fashion in Berland
implementation
1000
x9934
690F3
Tree of Life (hard)
trees
3200
x46
690F2
Tree of Life (medium)
constructive algorithms
,
hashing
,
trees
2700
x79
690F1
Tree of Life (easy)
1300
x2115
690E2
Photographs (II)
2600
x142
690E1
Photographs (I)
1800
x670
690D3
The Wall (hard)
dp
2100
x491
690D2
The Wall (medium)
combinatorics
1800
x1211
690D1
The Wall (easy)
1200
x2563
690C3
Brain Network (hard)
trees
2200
x885
690C2
Brain Network (medium)
dfs and similar
,
graphs
,
trees
1500
x3593
690C1
Brain Network (easy)
1300
x2693
690B3
Recover Polygon (hard)
data structures
2600
x91
690B2
Recover Polygon (medium)
geometry
2600
x197
690B1
Recover Polygon (easy)
1700
x930
690A3
Collective Mindsets (hard)
2400
x526
690A2
Collective Mindsets (medium)
2300
x689
690A1
Collective Mindsets (easy)
1100
x2778
689E
Mike and Geometry Problem
combinatorics
,
data structures
,
dp
,
geometry
,
implementation
2000
x1812
689D
Friends and Subsequences
binary search
,
data structures
2100
x3107
689C
Mike and Chocolate Thieves
binary search
,
combinatorics
,
math
1700
x4941
689B
Mike and Shortcuts
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x5624
689A
Mike and Cellphone
brute force
,
constructive algorithms
,
implementation
1400
x5198
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x30703
688A
Opponents
implementation
800
x13748
687E
TOF
dfs and similar
,
graphs
2900
x314
687D
Dividing Kingdom II
brute force
,
data structures
,
dsu
,
graphs
,
sortings
2500
x856
687C
The Values You Can Make
dp
1900
x5026
687B
Remainders Game
chinese remainder theorem
,
math
,
number theory
1800
x5596
687A
NP-Hard Problem
dfs and similar
,
graphs
1500
x13850
686B
Little Robber Girl's Zoo
constructive algorithms
,
implementation
,
sortings
1100
x7723
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x35829
685E
Travelling Through the Snow Queen's Kingdom
bitmasks
,
brute force
,
divide and conquer
,
graphs
2800
x504
685D
Kay and Eternity
brute force
,
implementation
,
sortings
2600
x478
685C
Optimal Point
binary search
,
math
2900
x577
685B
Kay and Snowflake
data structures
,
dfs and similar
,
dp
,
trees
1900
x3806
685A
Robbers' watch
brute force
,
combinatorics
,
dp
,
math
1700
x4149
683J
The Hero with Bombs
*special problem
3000
x40
683I
Loader
*special problem
,
graphs
2500
x38
683H
Exchange of Books
*special problem
1900
x95
683G
The Fraction
*special problem
1900
x130
683F
Reformat the String
*special problem
1800
x146
683E
Hammer throwing
*special problem
1800
x187
683D
Chocolate Bar
*special problem
,
math
1400
x319
683C
Symmetric Difference
*special problem
1600
x314
683B
The Teacher of Physical Education
*special problem
1600
x316
683A
The Check of the Point
*special problem
,
geometry
1200
x787
682E
Alyona and Triangles
geometry
,
two pointers
2600
x648
682D
Alyona and Strings
dp
,
strings
1900
x3180
682C
Alyona and the Tree
dfs and similar
,
dp
,
graphs
,
trees
1600
x7017
682B
Alyona and Mex
sortings
1200
x11122
682A
Alyona and Numbers
constructive algorithms
,
math
,
number theory
1100
x20684
681E
Runaway to a Shadow
geometry
,
sortings
2500
x456
681D
Gifts by the List
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2000
x1722
681C
Heap Operations
constructive algorithms
,
data structures
,
greedy
1600
x7325
681B
Economy Game
brute force
1300
x8782
681A
A Good Contest
implementation
800
x15100
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x23547
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12197
679E
Bear and Bad Powers of 42
data structures
3100
x664
679D
Bear and Chase
brute force
,
dfs and similar
,
graphs
,
implementation
,
math
,
probabilities
2900
x312
679C
Bear and Square Grid
dfs and similar
,
dsu
,
implementation
2400
x1133
679B
Bear and Tower of Cubes
binary search
,
dp
,
greedy
2200
x2115
679A
Bear and Prime 100
constructive algorithms
,
interactive
,
math
1400
x12445
678F
Lena and Queries
data structures
,
divide and conquer
,
geometry
2500
x827
678E
Another Sith Tournament
bitmasks
,
dp
,
math
,
probabilities
2200
x1919
678D
Iterated Linear Function
math
,
number theory
1700
x4307
678C
Joty and Chocolate
implementation
,
math
,
number theory
1600
x9120
678B
The Same Calendar
implementation
1600
x4038
678A
Johny Likes Numbers
implementation
,
math
800
x12611
←
1
2
...
65
66
67
68
69
...
95
96
→
→ Pay attention
Before contest
Codeforces Round 950 (Div. 3)
42:09:48
Register now »
→ 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