Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
ICPC Challenge
→ Pay attention
Before contest
2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred)
22:17:26
Register now »
Before contest
Educational Codeforces Round 159 (Rated for Div. 2)
32:17:25
Register now »
→ Filter Problems
Difficulty:
—
divide and conquer
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
1903D2
Maximum And Queries (hard version)
bitmasks
,
divide and conquer
,
dp
,
greedy
2500
x187
1898F
Vova Escapes the Matrix
brute force
,
dfs and similar
,
divide and conquer
,
shortest paths
2600
x530
1896H1
Cyclic Hamming (Easy Version)
brute force
,
divide and conquer
,
dp
,
fft
,
math
,
number theory
3400
x34
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x3547
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x640
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x5691
1874D
Jellyfish and Miku
divide and conquer
,
dp
,
math
,
probabilities
2800
x543
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x337
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x3627
1856D
More Wrong
divide and conquer
,
interactive
2100
x2839
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x541
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1324
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1324
1843F2
Omsk Metro (hard version)
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
math
,
trees
2300
x1295
1842I
Tenzing and Necklace
divide and conquer
,
dp
,
greedy
3500
x95
1817E
Half-sum
brute force
,
divide and conquer
,
greedy
3400
x223
1814F
Communication Towers
brute force
,
divide and conquer
,
dsu
2700
x394
1808E2
Minibuses on Venus (medium version)
combinatorics
,
divide and conquer
,
dp
,
matrices
2500
x572
1808E1
Minibuses on Venus (easy version)
combinatorics
,
divide and conquer
,
dp
2200
x1126
1804F
Approximate Diameter
binary search
,
divide and conquer
,
graphs
,
shortest paths
2700
x786
1801E
Gasoline prices
data structures
,
divide and conquer
,
dsu
,
hashing
,
trees
3000
x382
1797F
Li Hua and Path
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
trees
3000
x256
1794D
Counting Factorizations
combinatorics
,
divide and conquer
,
dp
,
math
,
number theory
1900
x3094
1793F
Rebrending
brute force
,
data structures
,
divide and conquer
,
implementation
2600
x1149
1792F2
Graph Coloring (hard version)
brute force
,
combinatorics
,
divide and conquer
,
dp
,
fft
,
graphs
2900
x342
1790F
Timofey and Black-White Tree
brute force
,
dfs and similar
,
divide and conquer
,
graphs
,
greedy
,
math
,
shortest paths
,
trees
2100
x2894
1787I
Treasure Hunt
data structures
,
divide and conquer
,
two pointers
3400
x138
1783G
Weighed Tree Radius
data structures
,
divide and conquer
,
implementation
,
trees
2800
x381
1777F
Comfortably Numb
bitmasks
,
data structures
,
divide and conquer
,
strings
,
trees
2400
x720
1773B
BinCoin
binary search
,
divide and conquer
,
hashing
,
implementation
,
probabilities
,
trees
2200
x686
1770G
Koxia and Bracket
divide and conquer
,
fft
,
math
3400
x136
1766E
Decomposition
binary search
,
brute force
,
data structures
,
divide and conquer
,
dp
,
two pointers
2300
x1076
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1282
1748E
Yet Another Array Counting Problem
binary search
,
data structures
,
divide and conquer
,
dp
,
flows
,
math
,
trees
2300
x1583
1741D
Masha and a Beautiful Tree
dfs and similar
,
divide and conquer
,
graphs
,
sortings
,
trees
1300
x13357
1740I
Arranging Crystal Balls
data structures
,
divide and conquer
,
divide and conquer
,
dp
,
geometry
,
graphs
,
number theory
3500
x93
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x728
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x556
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x5871
1716E
Swap and Maximum Block
bitmasks
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
2500
x948
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1493
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2173
1696D
Permutation Graph
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
shortest paths
1900
x4961
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x724
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5088
1684H
Hard Cut
constructive algorithms
,
dfs and similar
,
divide and conquer
,
math
3400
x220
1681F
Unique Occurrences
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
dsu
,
trees
2300
x1427
1680F
Lenient Vertex Cover
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x557
1676H2
Maximum Crossings (Hard Version)
data structures
,
divide and conquer
,
sortings
1500
x9112
1673F
Anti-Theft Road Planning
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
interactive
,
math
2400
x734
1671E
Preorder
combinatorics
,
divide and conquer
,
dp
,
dsu
,
hashing
,
sortings
,
trees
2100
x2533
1665E
MinimizOR
bitmasks
,
brute force
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
two pointers
2500
x1350
1663B
Mike's Sequence
*special problem
,
divide and conquer
,
implementation
,
math
x3210
1654H
Three Minimums
combinatorics
,
constructive algorithms
,
divide and conquer
,
dp
,
fft
,
math
3500
x65
1654F
Minimal String Xoration
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
hashing
,
sortings
,
strings
2800
x945
1648E
Air Reform
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
implementation
,
trees
3200
x354
1648D
Serious Business
data structures
,
divide and conquer
,
dp
,
implementation
,
shortest paths
2800
x712
1641E
Special Positions
combinatorics
,
divide and conquer
,
fft
,
math
3300
x185
1633F
Perfect Matching
data structures
,
divide and conquer
,
interactive
,
trees
2800
x286
1625E1
Cats on the Upgrade (easy version)
brute force
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
trees
2500
x926
1619H
Permutation and Queries
brute force
,
data structures
,
divide and conquer
,
two pointers
2400
x932
1616H
Keep XOR Low
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
,
dp
,
math
3000
x698
1615H
Reindeer Games
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
flows
,
graphs
,
shortest paths
3000
x280
1613F
Tree Coloring
combinatorics
,
divide and conquer
,
fft
2600
x592
1609F
Interesting Sections
data structures
,
divide and conquer
,
meet-in-the-middle
,
two pointers
2800
x677
1603D
Artistic Partition
divide and conquer
,
dp
,
number theory
3000
x546
1601C
Optimal Insertion
data structures
,
divide and conquer
,
dp
,
greedy
,
sortings
2300
x1814
1583H
Omkar and Tours
data structures
,
divide and conquer
,
sortings
,
trees
3300
x288
1583F
Defender of Childhood Dreams
bitmasks
,
constructive algorithms
,
divide and conquer
2500
x1175
1580D
Subsequence
brute force
,
divide and conquer
,
dp
,
greedy
,
trees
2900
x690
1575L
Longest Array Deconstruction
data structures
,
divide and conquer
,
dp
,
sortings
2100
x1158
1567E
Non-Decreasing Dilemma
data structures
,
divide and conquer
,
math
2200
x3361
1553I
Stairs
combinatorics
,
divide and conquer
,
dp
,
fft
,
math
3400
x180
1553H
XOR and Distance
bitmasks
,
divide and conquer
,
trees
2900
x631
1550F
Jumping Around
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
graphs
,
shortest paths
2700
x551
1548E
Gregor and the Two Painters
data structures
,
divide and conquer
,
graphs
,
greedy
,
math
3400
x311
1548B
Integers Have Friends
binary search
,
data structures
,
divide and conquer
,
math
,
number theory
,
two pointers
1800
x8798
1547F
Array Stabilization (GCD version)
binary search
,
brute force
,
data structures
,
divide and conquer
,
number theory
,
two pointers
1900
x5171
1543E
The Final Pursuit
bitmasks
,
constructive algorithms
,
divide and conquer
,
graphs
,
greedy
,
math
2700
x380
1528A
Parsa's Humongous Tree
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
trees
1600
x13141
1527E
Partition Game
binary search
,
data structures
,
divide and conquer
,
dp
2500
x1936
1523G
Try Booking
data structures
,
divide and conquer
3200
x387
1503F
Balance the Cards
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
3500
x117
1494D
Dogeforces
constructive algorithms
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
sortings
,
trees
2300
x2418
1491E
Fib-tree
brute force
,
dfs and similar
,
divide and conquer
,
number theory
,
trees
2400
x1936
1490D
Permutation Transformation
dfs and similar
,
divide and conquer
,
implementation
1200
x18151
1482E
Skyline Photo
data structures
,
divide and conquer
,
dp
2100
x2783
1470F
Strange Covering
divide and conquer
3500
x108
1466G
Song of the Sirens
combinatorics
,
divide and conquer
,
hashing
,
math
,
string suffix structures
,
strings
2600
x804
1461D
Divide and Summarize
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
,
sortings
1600
x8611
1446C
Xor Tree
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
dp
,
trees
2100
x3228
1442D
Sum
data structures
,
divide and conquer
,
dp
,
greedy
2800
x1739
1439C
Greedy Shopping
binary search
,
data structures
,
divide and conquer
,
greedy
,
implementation
2600
x1595
1438E
Yurii Can Do Everything
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
two pointers
2500
x1238
1428F
Fruit Sequences
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2400
x2080
1425B
Blue and Red of Our Faculty!
divide and conquer
,
dp
2600
x258
1423H
Virus
data structures
,
divide and conquer
,
dsu
,
graphs
2500
x471
1423C
Dušan's Railway
divide and conquer
,
graphs
,
trees
3500
x106
1420C2
Pokémon Army (hard version)
data structures
,
divide and conquer
,
dp
,
greedy
,
implementation
2100
x4367
1418G
Three Occurrences
data structures
,
divide and conquer
,
hashing
,
two pointers
2500
x1288
←
1
2
3
→
User lists
Name