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Codeforces Round 941 (Div. 1)
35:08:06
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Codeforces Round 941 (Div. 2)
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two pointers
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2-sat
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graph matchings
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1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2364
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2510
609D
Gadgets for dollars and pounds
binary search
,
greedy
,
two pointers
2000
x2550
899E
Segments Removal
data structures
,
dsu
,
flows
,
implementation
,
two pointers
2000
x2731
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x2859
1744F
MEX vs MED
math
,
two pointers
2000
x2867
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2902
487B
Strip
binary search
,
data structures
,
dp
,
two pointers
2000
x3344
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3406
1905D
Cyclic MEX
data structures
,
implementation
,
math
,
two pointers
2000
x3455
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3643
1788D
Moving Dots
binary search
,
brute force
,
combinatorics
,
math
,
two pointers
2000
x3709
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x3855
1622D
Shuffle
combinatorics
,
math
,
two pointers
2000
x3869
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3924
514D
R2D2 and Droid Army
binary search
,
data structures
,
two pointers
2000
x4100
1841D
Pairs of Segments
data structures
,
greedy
,
sortings
,
two pointers
2000
x4115
1408D
Searchlights
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
,
two pointers
2000
x4154
1487E
Cheap Dinner
brute force
,
data structures
,
graphs
,
greedy
,
implementation
,
sortings
,
two pointers
2000
x4352
1632D
New Year Concert
binary search
,
data structures
,
greedy
,
math
,
number theory
,
two pointers
2000
x4452
1380D
Berserk And Fireball
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
2000
x4613
1244E
Minimizing Difference
binary search
,
constructive algorithms
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x4786
359D
Pair of Numbers
binary search
,
brute force
,
data structures
,
math
,
two pointers
2000
x4811
1379C
Choosing flowers
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
two pointers
2000
x5398
1156C
Match Points
binary search
,
greedy
,
sortings
,
ternary search
,
two pointers
2000
x5878
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x8159
1359D
Yet Another Yet Another Task
data structures
,
dp
,
implementation
,
two pointers
2000
x8925
250D
Building Bridge
geometry
,
ternary search
,
two pointers
1900
x873
420C
Bug in Code
data structures
,
graphs
,
implementation
,
two pointers
1900
x1192
1120A
Diana and Liana
greedy
,
implementation
,
two pointers
1900
x1617
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1813
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x1871
1600E
Array Game
games
,
greedy
,
two pointers
1900
x1911
222D
Olympiad
binary search
,
greedy
,
sortings
,
two pointers
1900
x2127
613B
Skills
binary search
,
brute force
,
dp
,
greedy
,
sortings
,
two pointers
1900
x2171
190D
Non-Secret Cypher
two pointers
1900
x2228
1899G
Unusual Entertainment
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
sortings
,
trees
,
two pointers
1900
x2884
343C
Read Time
binary search
,
greedy
,
two pointers
1900
x2896
965D
Single-use Stones
binary search
,
flows
,
greedy
,
two pointers
1900
x2957
6E
Exposition
binary search
,
data structures
,
dsu
,
trees
,
two pointers
1900
x2982
1168B
Good Triple
brute force
,
two pointers
1900
x3306
650B
Image Preview
binary search
,
brute force
,
dp
,
two pointers
1900
x3307
1819B
The Butcher
geometry
,
greedy
,
implementation
,
sortings
,
two pointers
1900
x3412
1659D
Reverse Sort Sum
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
,
two pointers
1900
x3859
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x3909
1918D
Blocking Elements
binary search
,
data structures
,
dp
,
implementation
,
two pointers
1900
x4203
1463D
Pairs
binary search
,
constructive algorithms
,
greedy
,
two pointers
1900
x4229
1569D
Inconvenient Pairs
binary search
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x4239
14D
Two Paths
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
,
two pointers
1900
x4293
1558B
Up the Strip
brute force
,
dp
,
math
,
number theory
,
two pointers
1900
x4596
1601B
Frog Traveler
data structures
,
dfs and similar
,
dp
,
graphs
,
shortest paths
,
two pointers
1900
x4758
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x4838
1494C
1D Sokoban
binary search
,
dp
,
greedy
,
implementation
,
two pointers
1900
x5224
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5468
1547F
Array Stabilization (GCD version)
binary search
,
brute force
,
data structures
,
divide and conquer
,
number theory
,
two pointers
1900
x5480
1413C
Perform Easily
binary search
,
brute force
,
dp
,
implementation
,
sortings
,
two pointers
1900
x5525
1342D
Multiple Testcases
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
,
two pointers
1900
x5828
1508A
Binary Literature
constructive algorithms
,
greedy
,
implementation
,
strings
,
two pointers
1900
x5981
505C
Mr. Kitayuta, the Treasure Hunter
dfs and similar
,
dp
,
two pointers
1900
x6061
1358D
The Best Vacation
binary search
,
brute force
,
greedy
,
implementation
,
two pointers
1900
x7997
1400D
Zigzags
brute force
,
combinatorics
,
data structures
,
math
,
two pointers
1900
x9776
577B
Modulo Sum
combinatorics
,
data structures
,
dp
,
two pointers
1900
x11427
958F2
Lightsabers (medium)
binary search
,
two pointers
1800
x1197
79C
Beaver
data structures
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x1714
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1719
533E
Correcting Mistakes
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x2169
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2199
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2503
939E
Maximize!
binary search
,
greedy
,
ternary search
,
two pointers
1800
x3004
652C
Foe Pairs
combinatorics
,
sortings
,
two pointers
1800
x3066
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3294
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4097
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4125
280B
Maximum Xor Secondary
data structures
,
implementation
,
two pointers
1800
x4357
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4405
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4544
1290B
Irreducible Anagrams
binary search
,
constructive algorithms
,
data structures
,
strings
,
two pointers
1800
x4903
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5071
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5172
1450D
Rating Compression
binary search
,
data structures
,
greedy
,
implementation
,
two pointers
1800
x5300
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5453
1630B
Range and Partition
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x5489
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5550
1042D
Petya and Array
data structures
,
divide and conquer
,
two pointers
1800
x5704
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5707
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5733
1923D
Slimes
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x5779
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x5999
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x6063
1611F
ATM and Students
binary search
,
data structures
,
two pointers
1800
x6162
519D
A and B and Interesting Substrings
data structures
,
dp
,
two pointers
1800
x6265
1394A
Boboniu Chats with Du
dp
,
greedy
,
sortings
,
two pointers
1800
x6443
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6821
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x6840
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7281
1409E
Two Platforms
binary search
,
dp
,
sortings
,
two pointers
1800
x7534
1335E2
Three Blocks Palindrome (hard version)
brute force
,
data structures
,
dp
,
two pointers
1800
x7935
1548B
Integers Have Friends
binary search
,
data structures
,
divide and conquer
,
math
,
number theory
,
two pointers
1800
x9250
1475D
Cleaning the Phone
binary search
,
dp
,
sortings
,
two pointers
1800
x9693
1355C
Count Triangles
binary search
,
implementation
,
math
,
two pointers
1800
x10177
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