Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
10 days
Register now »
Before contest
Codeforces Round 944 (Div. 4)
07:56:03
Register now »
→ Filter Problems
Difficulty:
—
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
Add tag
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1505A
Is it rated - 2
*special problem
,
implementation
,
interactive
900
x14005
1546B
AquaMoon and Stolen String
interactive
,
math
1200
x12849
679A
Bear and Prime 100
constructive algorithms
,
interactive
,
math
1400
x12344
1807E
Interview
binary search
,
implementation
,
interactive
1300
x11883
755C
PolandBall and Forest
dfs and similar
,
dsu
,
graphs
,
interactive
,
trees
1300
x11686
1486C1
Guessing the Greatest (easy version)
binary search
,
interactive
1600
x11627
1407C
Chocolate Bunny
constructive algorithms
,
interactive
,
math
,
two pointers
1600
x11401
1479A
Searching Local Minimum
binary search
,
interactive
,
ternary search
1700
x11110
1520F1
Guess the K-th Zero (Easy version)
binary search
,
interactive
1600
x10939
1167B
Lost Numbers
brute force
,
divide and conquer
,
interactive
,
math
1400
x10678
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10552
1698D
Fixed Point Guessing
binary search
,
constructive algorithms
,
interactive
1600
x8691
1486C2
Guessing the Greatest (hard version)
binary search
,
interactive
1900
x8127
1543D1
RPD and Rap Sheet (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
1700
x7437
1797C
Li Hua and Chess
constructive algorithms
,
greedy
,
interactive
1600
x7230
727C
Guess the Array
constructive algorithms
,
interactive
,
math
1400
x6912
1503B
3-Coloring
constructive algorithms
,
games
,
interactive
1700
x6841
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6732
1621C
Hidden Permutations
dfs and similar
,
interactive
,
math
1700
x6724
1936A
Bitwise Operation Wizard
bitmasks
,
constructive algorithms
,
greedy
,
interactive
,
math
1700
x6552
1556D
Take a Guess
bitmasks
,
constructive algorithms
,
interactive
,
math
1800
x6487
1934C
Find a Mine
binary search
,
constructive algorithms
,
geometry
,
greedy
,
interactive
,
math
1700
x6032
1534D
Lost Tree
constructive algorithms
,
interactive
,
trees
1800
x5768
1207E
XOR Guessing
bitmasks
,
interactive
,
math
1900
x5604
1713D
Tournament Countdown
constructive algorithms
,
greedy
,
interactive
,
number theory
,
probabilities
1800
x5454
1425F
Flamingoes of Mystery
interactive
1400
x5238
1583D
Omkar and the Meaning of Life
constructive algorithms
,
greedy
,
interactive
1800
x5231
1010B
Rocket
binary search
,
interactive
1800
x5072
1305D
Kuroni and the Celebration
constructive algorithms
,
dfs and similar
,
interactive
,
trees
1900
x4756
1780D
Bit Guessing Game
binary search
,
bitmasks
,
constructive algorithms
,
interactive
1800
x4644
1617D1
Too Many Impostors (easy version)
constructive algorithms
,
implementation
,
interactive
1800
x4528
1270D
Strange Device
constructive algorithms
,
interactive
,
math
,
sortings
1900
x4398
1521C
Nastia and a Hidden Permutation
constructive algorithms
,
interactive
2000
x4278
1697D
Guess The String
binary search
,
constructive algorithms
,
interactive
1900
x4272
1634D
Finding Zero
constructive algorithms
,
interactive
,
math
2000
x4230
1451E1
Bitwise Queries (Easy Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
2000
x4194
1363D
Guess The Maximums
binary search
,
implementation
,
interactive
,
math
2100
x3828
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3693
1584D
Guess the Permutation
binary search
,
combinatorics
,
interactive
,
math
2000
x3523
1146C
Tree Diameter
bitmasks
,
graphs
,
interactive
1700
x3523
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3521
1687B
Railway System
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
1700
x3485
1762D
GCD Queries
constructive algorithms
,
interactive
,
number theory
2100
x3290
1392E
Omkar and Duck
bitmasks
,
constructive algorithms
,
interactive
,
math
2100
x3237
1624F
Interacdive Problem
binary search
,
constructive algorithms
,
interactive
2000
x3175
1103B
Game with modulo
binary search
,
constructive algorithms
,
interactive
2000
x3170
1856D
More Wrong
divide and conquer
,
interactive
2100
x3085
1628C
Grid Xor
constructive algorithms
,
greedy
,
implementation
,
interactive
,
math
2300
x3080
1867E2
Salyg1n and Array (hard version)
constructive algorithms
,
interactive
2200
x2983
1520F2
Guess the K-th Zero (Hard version)
binary search
,
constructive algorithms
,
data structures
,
interactive
2200
x2895
1846F
Rudolph and Mimic
constructive algorithms
,
implementation
,
interactive
1800
x2876
1815B
Sum Graph
brute force
,
constructive algorithms
,
graphs
,
implementation
,
interactive
,
shortest paths
,
trees
2000
x2845
1451E2
Bitwise Queries (Hard Version)
bitmasks
,
constructive algorithms
,
interactive
,
math
2300
x2833
1063C
Dwarves, Hats and Extrasensory Abilities
binary search
,
constructive algorithms
,
geometry
,
interactive
1900
x2790
1114E
Arithmetic Progression
binary search
,
interactive
,
number theory
,
probabilities
2200
x2771
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2760
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2635
730B
Minimum and Maximum
constructive algorithms
,
interactive
1800
x2376
1056C
Pick Heroes
greedy
,
implementation
,
interactive
,
sortings
1700
x2320
1033D
Divisors
interactive
,
math
,
number theory
2000
x2304
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2276
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2232
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2158
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2143
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x2092
1282D
Enchanted Artifact
constructive algorithms
,
interactive
,
strings
2300
x2062
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x2049
952B
A Map of the Cat
brute force
,
interactive
1900
x1991
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x1955
1543D2
RPD and Rap Sheet (Hard Version)
brute force
,
constructive algorithms
,
interactive
,
math
2200
x1944
1375F
Integer Game
constructive algorithms
,
games
,
interactive
,
math
2600
x1930
1019B
The hat
binary search
,
interactive
2000
x1891
1534E
Lost Array
graphs
,
greedy
,
interactive
,
shortest paths
2300
x1849
1498E
Two Houses
brute force
,
graphs
,
greedy
,
interactive
,
sortings
2200
x1839
1903E
Geo Game
greedy
,
interactive
,
math
2000
x1799
1617D2
Too Many Impostors (hard version)
constructive algorithms
,
implementation
,
interactive
,
math
2400
x1706
744B
Hongcow's Game
bitmasks
,
divide and conquer
,
interactive
1900
x1706
1779E
Anya's Simultaneous Exhibition
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
2400
x1688
710F
String Set Queries
brute force
,
data structures
,
hashing
,
interactive
,
string suffix structures
,
strings
2400
x1671
862D
Mahmoud and Ehab and the binary string
binary search
,
divide and conquer
,
interactive
2000
x1651
1406E
Deleting Numbers
interactive
,
math
,
number theory
2600
x1552
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1549
1044B
Intersecting Subtrees
dfs and similar
,
interactive
,
trees
1900
x1542
811D
Vladik and Favorite Game
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2100
x1526
1137D
Cooperative Game
constructive algorithms
,
interactive
,
number theory
2400
x1468
1117E
Decypher the String
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
interactive
,
math
2200
x1451
1174F
Ehab and the Big Finale
constructive algorithms
,
divide and conquer
,
graphs
,
implementation
,
interactive
,
trees
2400
x1448
1153E
Serval and Snake
binary search
,
brute force
,
interactive
2200
x1448
809B
Glad to see you!
binary search
,
interactive
2200
x1437
713B
Searching Rectangles
binary search
,
constructive algorithms
,
interactive
2200
x1420
1155E
Guess the Root
brute force
,
interactive
,
math
2200
x1389
1666I
Interactive Treasure Hunt
brute force
,
constructive algorithms
,
geometry
,
interactive
,
math
2200
x1384
1370F1
The Hidden Pair (Easy Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2400
x1366
1746E1
Joking (Easy Version)
binary search
,
constructive algorithms
,
interactive
,
ternary search
2500
x1361
1470C
Strange Shuffle
binary search
,
brute force
,
constructive algorithms
,
interactive
2500
x1305
1254C
Point Ordering
constructive algorithms
,
geometry
,
interactive
,
math
2300
x1261
1286C1
Madhouse (Easy version)
brute force
,
constructive algorithms
,
interactive
,
math
2400
x1260
1370F2
The Hidden Pair (Hard Version)
binary search
,
dfs and similar
,
graphs
,
interactive
,
shortest paths
,
trees
2700
x1246
870D
Something with XOR Queries
brute force
,
interactive
,
probabilities
2000
x1193
1934D2
XOR Break --- Game Version
bitmasks
,
games
,
greedy
,
interactive
2400
x1189
←
1
2
3
→
User lists
Name