Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 941 (Div. 1)
20:19:00
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
20:19:01
Register now »
*has extra registration
→ 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
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
976C
Nested Segments
greedy
,
implementation
,
sortings
1500
x6267
976B
Lara Croft and the New Game
implementation
,
math
1300
x5662
976A
Minimum Binary Number
implementation
800
x10361
975E
Hag's Khashba
geometry
2600
x300
975D
Ghosts
geometry
,
math
2000
x1867
975C
Valhalla Siege
binary search
1400
x9362
975B
Mancala
brute force
,
implementation
1100
x6734
975A
Aramic script
implementation
,
strings
900
x8958
967B
Watering System
math
,
sortings
1000
x6820
967A
Mind the Gap
implementation
1100
x4277
965E
Short Code
data structures
,
dp
,
greedy
,
strings
,
trees
2200
x1327
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x2957
965C
Greedy Arkady
math
2000
x2053
965B
Battleship
implementation
1300
x4469
965A
Paper Airplanes
math
800
x9338
964B
Messages
math
1300
x4301
964A
Splits
math
800
x9089
963E
Circles of Waiting
math
3100
x501
963D
Frequency of String
hashing
,
string suffix structures
,
strings
2500
x1799
963C
Cutting Rectangle
brute force
,
math
,
number theory
2600
x558
963B
Destruction of a Tree
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x2693
963A
Alternating Sum
math
,
number theory
1800
x3220
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x125
962F
Simple Cycles Edges
dfs and similar
,
graphs
,
trees
2400
x1207
962E
Byteland, Berland and Disputed Cities
constructive algorithms
,
greedy
2200
x1044
962D
Merge Equals
data structures
,
implementation
1600
x6654
962C
Make a Square
brute force
,
implementation
,
math
1400
x7743
962B
Students in Railway Carriage
constructive algorithms
,
greedy
,
implementation
1300
x7585
962A
Equator
implementation
1300
x12517
961G
Partitions
combinatorics
,
math
,
number theory
2700
x1283
961F
k-substrings
binary search
,
hashing
,
string suffix structures
2700
x648
961E
Tufurama
data structures
1900
x3434
961D
Pair Of Lines
geometry
2000
x4089
961C
Chessboard
bitmasks
,
brute force
,
implementation
1400
x5215
961B
Lecture Sleep
data structures
,
dp
,
implementation
,
two pointers
1200
x19118
961A
Tetris
implementation
900
x9881
960H
Santa's Gift
data structures
,
trees
3100
x253
960G
Bandit Blues
combinatorics
,
dp
,
fft
,
math
2900
x1022
960F
Pathwalks
data structures
,
dp
,
graphs
2100
x2664
960E
Alternating Tree
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
probabilities
,
trees
2300
x1807
960D
Full Binary Tree Queries
brute force
,
implementation
,
trees
2100
x1676
960C
Subsequence Counting
bitmasks
,
constructive algorithms
,
greedy
,
implementation
1700
x3807
960B
Minimize the error
data structures
,
greedy
,
sortings
1500
x7353
960A
Check the string
implementation
1200
x8023
959F
Mahmoud and Ehab and yet another xor task
bitmasks
,
dp
,
math
,
matrices
2400
x1937
959E
Mahmoud and Ehab and the xor-MST
bitmasks
,
dp
,
graphs
,
implementation
,
math
1900
x3301
959D
Mahmoud and Ehab and another array construction task
constructive algorithms
,
greedy
,
math
,
number theory
1900
x3044
959C
Mahmoud and Ehab and the wrong algorithm
constructive algorithms
,
trees
1500
x5671
959B
Mahmoud and Ehab and the message
dsu
,
greedy
,
implementation
1200
x9073
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x43926
958F3
Lightsabers (hard)
fft
2600
x660
958F2
Lightsabers (medium)
binary search
,
two pointers
1800
x1197
958F1
Lightsabers (easy)
implementation
1500
x1580
958E3
Guard Duty (hard)
geometry
2700
x177
958E2
Guard Duty (medium)
binary search
,
dp
,
greedy
,
sortings
2200
x895
958E1
Guard Duty (easy)
brute force
,
geometry
,
greedy
,
math
1600
x1467
958D2
Hyperspace Jump (hard)
2700
x84
958D1
Hyperspace Jump (easy)
expression parsing
,
math
1400
x2029
958C3
Encryption (hard)
data structures
,
dp
2500
x484
958C2
Encryption (medium)
dp
2000
x1134
958C1
Encryption (easy)
brute force
1200
x2770
958B2
Maximum Control (medium)
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
2200
x612
958B1
Maximum Control (easy)
implementation
1000
x3306
958A3
Death Stars (hard)
3100
x44
958A2
Death Stars (medium)
hashing
,
strings
2000
x875
958A1
Death Stars (easy)
implementation
1400
x1634
957A
Tritonic Iridescence
implementation
1300
x5657
955F
Heaps
dp
,
trees
2600
x345
955E
Icicles
2900
x90
955D
Scissors
brute force
,
strings
2600
x454
955C
Sad powers
binary search
,
math
,
number theory
2100
x2452
955B
Not simply beatiful strings
implementation
1400
x4731
955A
Feed the cat
greedy
,
math
1100
x6545
954I
Yet Another String Matching Problem
fft
,
math
2200
x958
954H
Path Counting
combinatorics
,
dp
2500
x552
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x1893
954F
Runner's Problem
dp
,
matrices
,
sortings
2100
x975
954E
Water Taps
binary search
,
greedy
,
sortings
2000
x1798
954D
Fight Against Traffic
dfs and similar
,
graphs
,
shortest paths
1600
x6285
954C
Matrix Walk
implementation
1700
x3685
954B
String Typing
implementation
,
strings
1400
x7092
954A
Diagonal Walking
implementation
800
x10368
952G
Puzzling Language
constructive algorithms
2200
x224
952F
2 + 2 != 4
2400
x367
952E
Cheese Board
2000
x623
952D
I'm Feeling Lucky!
probabilities
1800
x2388
952C
Ravioli Sort
implementation
1600
x2832
952B
A Map of the Cat
brute force
,
interactive
1900
x1990
952A
Quirky Quantifiers
math
800
x11101
950B
Intercepted Message
greedy
,
implementation
1100
x7294
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x14876
949F
Astronomy
geometry
,
probabilities
3300
x57
949E
Binary Cards
brute force
2700
x595
949D
Curfew
binary search
,
brute force
,
greedy
,
sortings
2300
x811
949C
Data Center Maintenance
dfs and similar
,
graphs
1900
x1981
949B
A Leapfrog in the Array
constructive algorithms
,
math
1700
x3638
949A
Zebras
greedy
1600
x5176
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x13349
946G
Almost Increasing Array
data structures
,
dp
2500
x647
946F
Fibonacci String Subsequences
combinatorics
,
dp
,
matrices
2400
x528
←
1
2
...
52
53
54
55
56
...
94
95
→
User lists
Name