Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round (Div. 2)
6 days
→ Filter Problems
Difficulty:
—
dp
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
1264D1
Beautiful Bracket Sequence (easy version)
combinatorics
,
dp
,
probabilities
2600
x1188
1263F
Economic Difficulties
data structures
,
dfs and similar
,
dp
,
flows
,
graphs
,
trees
2400
x848
1260E
Tournament
brute force
,
dp
,
greedy
2400
x1613
1257E
The Contest
data structures
,
dp
,
greedy
2000
x4149
1256E
Yet Another Division Into Teams
dp
,
greedy
,
sortings
2000
x4056
1253E
Antenna Coverage
data structures
,
dp
,
greedy
,
sortings
2200
x2776
1252J
Tiling Terrace
brute force
,
dp
2300
x691
1252D
Find String in a Grid
data structures
,
dp
,
strings
,
trees
3000
x330
1252B
Cleaning Robots
dp
,
trees
2300
x507
1251E1
Voting (Easy Version)
data structures
,
dp
,
greedy
2300
x2257
1250G
Discarding Game
dp
,
greedy
,
two pointers
2300
x714
1250D
Conference Problem
dp
3000
x172
1249F
Maximum Weight Subset
dp
,
trees
2200
x2285
1248D1
The World Is Just a Programming Task (Easy Version)
brute force
,
dp
,
greedy
,
implementation
2000
x2305
1245F
Daniel and Spring Cleaning
bitmasks
,
brute force
,
combinatorics
,
dp
2300
x1748
1245E
Hyakugoku and Ladders
dp
,
probabilities
,
shortest paths
2300
x1248
1242C
Sum Balance
bitmasks
,
dfs and similar
,
dp
,
graphs
2400
x1617
1239E
Turtle
dp
,
implementation
3100
x919
1238F
The Maximum Subtree
dfs and similar
,
dp
,
graphs
,
trees
2200
x1834
1238E
Keyboard Purchase
bitmasks
,
dp
2200
x2874
1237G
Balanced Distribution
data structures
,
dp
,
greedy
3500
x121
1237F
Balanced Domino Placements
combinatorics
,
dp
2600
x835
1237E
Balanced Binary Search Trees
dp
,
math
2400
x1276
1236E
Alice and the Unfair Game
binary search
,
data structures
,
dp
,
dsu
2500
x642
1234F
Yet Another Substring Reverse
bitmasks
,
dp
2200
x2401
1228E
Another Filling the Grid
combinatorics
,
dp
,
math
2300
x2570
1227F1
Wrong Answer on test 233 (Easy Version)
dp
2200
x1773
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x527
1225E
Rock Is Push
binary search
,
dp
2200
x1809
1223F
Stack Exterminable Arrays
data structures
,
divide and conquer
,
dp
,
hashing
2600
x1971
1223E
Paint the Tree
dp
,
sortings
,
trees
2100
x2544
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3958
1221G
Graph And Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
meet-in-the-middle
2900
x522
1220E
Tourism
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
,
trees
2200
x2695
1218C
Jumping Transformers
dp
2600
x173
1218A
BubbleReactor
dp
,
graphs
2800
x124
1216F
Wi-Fi
data structures
,
dp
,
greedy
2100
x2418
1215E
Marbles
bitmasks
,
dp
2200
x2933
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x43
1210G
Mateusz and Escape Room
dp
3500
x158
1209E2
Rotate Columns (hard version)
bitmasks
,
dp
,
greedy
,
sortings
2500
x1860
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2884
1208F
Bits And Pieces
bitmasks
,
dfs and similar
,
dp
,
greedy
2600
x2201
1204E
Natasha, Sasha and the Prefix Sums
combinatorics
,
dp
,
math
,
number theory
2300
x1608
1203F2
Complete the Projects (hard version)
dp
,
greedy
2300
x2792
1202C
You Are Given a WASD-string...
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
strings
2100
x2496
1201D
Treasure Hunting
binary search
,
dp
,
greedy
,
implementation
2100
x2309
1200F
Graph Traveler
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
implementation
,
math
,
number theory
2300
x1055
1198D
Rectangle Painting 1
dp
2300
x3131
1197F
Coloring Game
dp
,
games
,
matrices
2700
x242
1197E
Culture Code
binary search
,
combinatorics
,
data structures
,
dp
,
shortest paths
,
sortings
2300
x1613
1194G
Another Meme Problem
dp
2700
x223
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x976
1188D
Make Equal
dp
3100
x673
1188C
Array Beauty
dp
2500
x1729
1187F
Expected Square Beauty
dp
,
math
,
probabilities
2500
x854
1187E
Tree Painting
dfs and similar
,
dp
,
trees
2100
x7786
1185G2
Playlist for Polycarp (hard version)
combinatorics
,
dp
2600
x723
1185G1
Playlist for Polycarp (easy version)
bitmasks
,
combinatorics
,
dp
2100
x2801
1183E
Subsequences (easy version)
dp
,
graphs
,
implementation
,
shortest paths
2000
x4717
1182E
Product Oriented Recurrence
dp
,
math
,
matrices
,
number theory
2300
x2596
1182D
Complete Mirror
constructive algorithms
,
dfs and similar
,
dp
,
hashing
,
implementation
,
trees
2400
x812
1179D
Fedor Runs for President
data structures
,
dp
,
trees
2700
x796
1178F2
Long Colorful Strip
dp
2600
x867
1178F1
Short Colorful Strip
combinatorics
,
dfs and similar
,
dp
2200
x2070
1176F
Destroy it!
dp
,
implementation
,
sortings
2100
x1823
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x446
1175E
Minimal Segment Cover
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
implementation
,
trees
2200
x3291
1174E
Ehab and the Expected GCD Problem
combinatorics
,
dp
,
math
,
number theory
2500
x1376
1172C2
Nauuo and Pictures (hard version)
dp
,
probabilities
2600
x825
1172C1
Nauuo and Pictures (easy version)
dp
,
probabilities
2300
x1048
1168D
Anagram Paths
dp
,
implementation
,
trees
3000
x341
1168C
And Reachability
bitmasks
,
dp
2200
x2351
1163D
Mysterious Code
dp
,
strings
2100
x1228
1158F
Density of subarrays
dp
,
math
3500
x395
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2574
1156F
Card Bag
dp
,
math
,
probabilities
2300
x1348
1156D
0-1-Tree
dfs and similar
,
divide and conquer
,
dp
,
dsu
,
trees
2200
x3746
1155F
Delivery Oligopoly
brute force
,
dp
,
graphs
2800
x406
1154F
Shovels Shop
dp
,
greedy
,
sortings
2100
x2673
1153F
Serval and Bonus Problem
combinatorics
,
dp
,
math
,
probabilities
2600
x765
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x611
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x529
1152D
Neko and Aki's Prank
dp
,
greedy
,
trees
2100
x2385
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1154
1151E
Number of Components
combinatorics
,
data structures
,
dp
,
math
2100
x3118
1149D
Abandoning Roads
brute force
,
dp
,
graphs
,
greedy
3000
x709
1149B
Three Religions
dp
,
implementation
,
strings
2200
x1876
1146H
Satanic Panic
dp
,
geometry
2900
x595
1146G
Zoning Restrictions
dp
,
flows
,
graphs
2700
x803
1146F
Leaf Partition
dp
,
trees
2500
x1098
1144G
Two Merged Sequences
dp
,
greedy
2400
x1898
1142D
Foreigner
dp
2800
x481
1142B
Lynyrd Skynyrd
data structures
,
dfs and similar
,
dp
,
math
,
trees
2000
x2820
1140E
Palindrome-less Arrays
combinatorics
,
divide and conquer
,
dp
2200
x1901
1139D
Steps to One
dp
,
math
,
number theory
,
probabilities
2300
x2091
1137C
Museums Tour
dp
,
graphs
,
implementation
2500
x1165
1132G
Greedy Subsequences
data structures
,
dp
,
trees
2400
x973
1132F
Clear the String
dp
2000
x7572
1132E
Knapsack
dfs and similar
,
dp
,
greedy
2300
x1423
←
1
2
...
5
6
7
8
9
...
13
14
→
User lists
Name