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ICPC Challenge
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Before contest
2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred)
09:31:04
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Before contest
Educational Codeforces Round 159 (Rated for Div. 2)
19:31:04
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→ Filter Problems
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interactive
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
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Custom test
Problems
#
Name
1505A
Is it rated - 2
*special problem
,
implementation
,
interactive
900
x13411
1546B
AquaMoon and Stolen String
interactive
,
math
1200
x12571
679A
Bear and Prime 100
constructive algorithms
,
interactive
,
math
1400
x11275
1407C
Chocolate Bunny
constructive algorithms
,
interactive
,
math
,
two pointers
1600
x11034
1486C1
Guessing the Greatest (easy version)
binary search
,
interactive
1600
x10992
755C
PolandBall and Forest
dfs and similar
,
dsu
,
graphs
,
interactive
,
trees
1300
x10920
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x10693
1807E
Interview
binary search
,
implementation
,
interactive
1300
x10612
1520F1
Guess the K-th Zero (Easy version)
binary search
,
interactive
1600
x10191
1167B
Lost Numbers
brute force
,
divide and conquer
,
interactive
,
math
1400
x9872
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x9683
1698D
Fixed Point Guessing
binary search
,
constructive algorithms
,
interactive
1600
x8092
1486C2
Guessing the Greatest (hard version)
binary search
,
interactive
1900
x7729
1543D1
RPD and Rap Sheet (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
1700
x7265
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x6707
1797C
Li Hua and Chess
constructive algorithms
,
greedy
,
interactive
1600
x6667
1621C
Hidden Permutations
dfs and similar
,
interactive
,
math
1700
x6509
727C
Guess the Array
constructive algorithms
,
interactive
,
math
1400
x6467
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6375
1556D
Take a Guess
bitmasks
,
constructive algorithms
,
interactive
,
math
1800
x6100
1534D
Lost Tree
constructive algorithms
,
interactive
,
trees
1800
x5570
1207E
XOR Guessing
bitmasks
,
interactive
,
math
1900
x5391
1713D
Tournament Countdown
constructive algorithms
,
greedy
,
interactive
,
number theory
,
probabilities
1800
x5251
1583D
Omkar and the Meaning of Life
constructive algorithms
,
greedy
,
interactive
1800
x5084
1010B
Rocket
binary search
,
interactive
1800
x4944
1425F
Flamingoes of Mystery
interactive
1400
x4748
1305D
Kuroni and the Celebration
constructive algorithms
,
dfs and similar
,
interactive
,
trees
1900
x4597
1617D1
Too Many Impostors (easy version)
constructive algorithms
,
implementation
,
interactive
1800
x4378
1780D
Bit Guessing Game
binary search
,
bitmasks
,
constructive algorithms
,
interactive
1800
x4314
1270D
Strange Device
constructive algorithms
,
interactive
,
math
,
sortings
1900
x4295
1521C
Nastia and a Hidden Permutation
constructive algorithms
,
interactive
2000
x4188
1634D
Finding Zero
constructive algorithms
,
interactive
,
math
2000
x4105
1697D
Guess The String
binary search
,
constructive algorithms
,
interactive
1900
x4062
1451E1
Bitwise Queries (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
2000
x4056
1363D
Guess The Maximums
binary search
,
implementation
,
interactive
,
math
2100
x3747
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3458
1584D
Guess the Permutation
binary search
,
combinatorics
,
interactive
,
math
2000
x3374
1687B
Railway System
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
1700
x3328
1146C
Tree Diameter
bitmasks
,
graphs
,
interactive
1700
x3304
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3174
1392E
Omkar and Duck
bitmasks
,
constructive algorithms
,
interactive
,
math
2100
x3160
1103B
Game with modulo
binary search
,
constructive algorithms
,
interactive
2000
x3114
1762D
GCD Queries
constructive algorithms
,
interactive
,
number theory
2100
x3054
1624F
Interacdive Problem
binary search
,
constructive algorithms
,
interactive
2000
x3019
1628C
Grid Xor
constructive algorithms
,
greedy
,
implementation
,
interactive
,
math
2300
x2971
1856D
More Wrong
divide and conquer
,
interactive
2100
x2842
1520F2
Guess the K-th Zero (Hard version)
binary search
,
constructive algorithms
,
data structures
,
interactive
2200
x2779
1451E2
Bitwise Queries (Hard Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
2300
x2746
1063C
Dwarves, Hats and Extrasensory Abilities
binary search
,
constructive algorithms
,
geometry
,
interactive
1900
x2740
1867E2
Salyg1n and Array (hard version)
constructive algorithms
,
interactive
2200
x2689
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2648
1114E
Arithmetic Progression
binary search
,
interactive
,
number theory
,
probabilities
2200
x2632
1815B
Sum Graph
brute force
,
constructive algorithms
,
graphs
,
implementation
,
interactive
,
shortest paths
,
trees
2000
x2619
1846F
Rudolph and Mimic
constructive algorithms
,
implementation
,
interactive
1800
x2541
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2535
730B
Minimum and Maximum
constructive algorithms
,
interactive
1800
x2345
1056C
Pick Heroes
greedy
,
implementation
,
interactive
,
sortings
1700
x2257
1033D
Divisors
interactive
,
math
,
number theory
2000
x2241
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2225
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2084
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2081
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2079
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x2010
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x1986
1282D
Enchanted Artifact
constructive algorithms
,
interactive
,
strings
2300
x1976
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x1911
952B
A Map of the Cat
brute force
,
interactive
1900
x1903
1543D2
RPD and Rap Sheet (Hard Version)
brute force
,
constructive algorithms
,
interactive
,
math
2200
x1885
1019B
The hat
binary search
,
interactive
2000
x1866
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x1850
1534E
Lost Array
graphs
,
greedy
,
interactive
,
shortest paths
2300
x1775
1498E
Two Houses
brute force
,
graphs
,
greedy
,
interactive
,
sortings
2200
x1756
744B
Hongcow's Game
bitmasks
,
divide and conquer
,
interactive
1900
x1673
1617D2
Too Many Impostors (hard version)
constructive algorithms
,
implementation
,
interactive
,
math
2400
x1633
1779E
Anya's Simultaneous Exhibition
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
2400
x1629
862D
Mahmoud and Ehab and the binary string
binary search
,
divide and conquer
,
interactive
2000
x1620
710F
String Set Queries
brute force
,
data structures
,
hashing
,
interactive
,
string suffix structures
,
strings
2400
x1538
1044B
Intersecting Subtrees
dfs and similar
,
interactive
,
trees
1900
x1517
811D
Vladik and Favorite Game
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2100
x1477
1406E
Deleting Numbers
interactive
,
math
,
number theory
2600
x1438
809B
Glad to see you!
binary search
,
interactive
2200
x1425
713B
Searching Rectangles
binary search
,
constructive algorithms
,
interactive
2200
x1411
1117E
Decypher the String
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
interactive
,
math
2200
x1403
1153E
Serval and Snake
binary search
,
brute force
,
interactive
2200
x1391
1174F
Ehab and the Big Finale
constructive algorithms
,
divide and conquer
,
graphs
,
implementation
,
interactive
,
trees
2400
x1340
1666I
Interactive Treasure Hunt
brute force
,
constructive algorithms
,
geometry
,
interactive
,
math
2200
x1333
1155E
Guess the Root
brute force
,
interactive
,
math
2200
x1328
1137D
Cooperative Game
constructive algorithms
,
interactive
,
number theory
2400
x1322
1370F1
The Hidden Pair (Easy Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2400
x1288
1470C
Strange Shuffle
binary search
,
brute force
,
constructive algorithms
,
interactive
2500
x1272
1746E1
Joking (Easy Version)
binary search
,
constructive algorithms
,
interactive
,
ternary search
2500
x1248
1254C
Point Ordering
constructive algorithms
,
geometry
,
interactive
,
math
2300
x1179
1370F2
The Hidden Pair (Hard Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2700
x1162
870D
Something with XOR Queries
brute force
,
interactive
,
probabilities
2000
x1154
1286C1
Madhouse (Easy version)
brute force
,
constructive algorithms
,
interactive
,
math
2400
x1153
1738F
Connectivity Addicts
constructive algorithms
,
dsu
,
graphs
,
greedy
,
interactive
,
shortest paths
,
trees
2400
x1090
1205C
Palindromic Paths
implementation
,
interactive
2400
x1086
1879E
Interactive Game with Coloring
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
,
interactive
,
trees
2400
x1076
835E
The penguin's game
binary search
,
constructive algorithms
,
interactive
2400
x1076
1364E
X-OR
bitmasks
,
constructive algorithms
,
divide and conquer
,
interactive
,
probabilities
2700
x1021
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