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bitmasks
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
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geometry
graph matchings
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greedy
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Name
1326F2
Wise Men (Hard Version)
bitmasks
,
dp
,
math
3200
x463
1326F1
Wise Men (Easy Version)
bitmasks
,
brute force
,
dp
,
meet-in-the-middle
2600
x812
1325D
Ehab the Xorcist
bitmasks
,
constructive algorithms
,
greedy
,
number theory
1700
x11579
1322D
Reality Show
bitmasks
,
dp
2800
x698
1322B
Present
binary search
,
bitmasks
,
constructive algorithms
,
data structures
,
math
,
sortings
2100
x3944
1316E
Team Building
bitmasks
,
dp
,
greedy
,
sortings
2300
x3475
1313D
Happy New Year
bitmasks
,
dp
,
implementation
2500
x1155
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x15839
1305G
Kuroni and Antihype
bitmasks
,
brute force
,
dp
,
dsu
,
graphs
3500
x941
1303D
Fill The Bag
bitmasks
,
greedy
1900
x6819
1302F
Keep talking and nobody explodes -- easy
bitmasks
,
brute force
,
expression parsing
x72
1299D
Around the World
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
graphs
,
graphs
,
math
,
trees
3000
x417
1292F
Nora's Toy Boxes
bitmasks
,
combinatorics
,
dp
3500
x302
1288D
Minimax Problem
binary search
,
bitmasks
,
dp
2000
x6682
1285D
Dr. Evil Underscores
bitmasks
,
brute force
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
strings
,
trees
1900
x7337
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x13586
1261F
Xor-Set
bitmasks
,
divide and conquer
,
math
3100
x370
1257F
Make Them Similar
bitmasks
,
brute force
,
hashing
,
meet-in-the-middle
2400
x1939
1245F
Daniel and Spring Cleaning
bitmasks
,
brute force
,
combinatorics
,
dp
2300
x1718
1242C
Sum Balance
bitmasks
,
dfs and similar
,
dp
,
graphs
2400
x1468
1238E
Keyboard Purchase
bitmasks
,
dp
2200
x2739
1234F
Yet Another Substring Reverse
bitmasks
,
dp
2200
x2364
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x521
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8642
1221G
Graph And Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
meet-in-the-middle
2900
x519
1220D
Alex and Julian
bitmasks
,
math
,
number theory
1900
x3688
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7090
1215E
Marbles
bitmasks
,
dp
2200
x2915
1214G
Feeling Good
bitmasks
,
data structures
3200
x280
1209E2
Rotate Columns (hard version)
bitmasks
,
dp
,
greedy
,
sortings
2500
x1847
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2715
1208F
Bits And Pieces
bitmasks
,
dfs and similar
,
dp
,
greedy
2600
x2102
1207E
XOR Guessing
bitmasks
,
interactive
,
math
1900
x5602
1205B
Shortest Cycle
bitmasks
,
brute force
,
graphs
,
shortest paths
1900
x6297
1202A
You Are Given Two Binary Strings...
bitmasks
,
greedy
1100
x8899
1194E
Count The Rectangles
bitmasks
,
brute force
,
data structures
,
geometry
,
sortings
2200
x1761
1185G1
Playlist for Polycarp (easy version)
bitmasks
,
combinatorics
,
dp
2100
x2558
1185F
Two Pizzas
bitmasks
,
brute force
2100
x1801
1174D
Ehab and the Expected XOR Problem
bitmasks
,
constructive algorithms
1900
x4595
1168C
And Reachability
bitmasks
,
dp
2200
x2325
1166E
The LCMs Must be Large
bitmasks
,
brute force
,
constructive algorithms
,
math
,
number theory
2100
x2781
1163E
Magical Permutation
bitmasks
,
brute force
,
constructive algorithms
,
data structures
,
graphs
,
math
2400
x646
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x593
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x514
1152B
Neko Performs Cat Furrier Transform
bitmasks
,
constructive algorithms
,
dfs and similar
,
math
1300
x8804
1151B
Dima and a Bad XOR
bitmasks
,
brute force
,
constructive algorithms
,
dp
1600
x10682
1148F
Foo Fighters
bitmasks
,
constructive algorithms
2700
x967
1146E
Hot is Cold
bitmasks
,
data structures
,
divide and conquer
,
implementation
2400
x822
1146C
Tree Diameter
bitmasks
,
graphs
,
interactive
1700
x3522
1145C
Mystery Circuit
bitmasks
,
brute force
x789
1144E
Median String
bitmasks
,
math
,
number theory
,
strings
1900
x4052
1117F
Crisp String
bitmasks
,
dp
2500
x517
1117E
Decypher the String
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
interactive
,
math
2200
x1449
1114F
Please, another Queries on Array?
bitmasks
,
data structures
,
divide and conquer
,
math
,
number theory
2400
x1810
1105E
Helping Hiasat
bitmasks
,
brute force
,
dp
,
meet-in-the-middle
2200
x1589
1103D
Professional layer
bitmasks
,
dp
3100
x399
1102F
Elongated Matrix
binary search
,
bitmasks
,
brute force
,
dp
,
graphs
2000
x1904
1097H
Mateusz and an Infinite Sequence
bitmasks
,
brute force
,
dp
,
strings
3400
x93
1097F
Alex and a TV Show
bitmasks
,
combinatorics
,
number theory
2500
x1213
1097B
Petr and a Combination Lock
bitmasks
,
brute force
,
dp
1200
x26581
1095C
Powers Of Two
bitmasks
,
greedy
1400
x15755
1093G
Multidimensional Queries
bitmasks
,
data structures
2300
x1824
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2759
1073E
Segment Sum
bitmasks
,
combinatorics
,
dp
,
math
2300
x2386
1051D
Bicolorings
bitmasks
,
dp
1700
x7129
1043F
Make It One
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
,
shortest paths
2500
x2187
1042B
Vitamins
bitmasks
,
brute force
,
dp
,
implementation
1200
x15188
1038E
Maximum Matching
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x952
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x361
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x587
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x364
1030E
Vasya and Good Sequences
bitmasks
,
dp
2000
x2967
1027G
X-mouse in the Campus
bitmasks
,
math
,
number theory
2600
x295
1017D
The Wu
bitmasks
,
brute force
,
data structures
1900
x3337
1016G
Appropriate Team
bitmasks
,
math
,
number theory
2700
x256
1009G
Allowed Letters
bitmasks
,
flows
,
graph matchings
,
graphs
,
greedy
2400
x769
1007B
Pave the Parallelepiped
bitmasks
,
brute force
,
combinatorics
,
math
,
number theory
2400
x935
1006F
Xor-Paths
bitmasks
,
brute force
,
dp
,
meet-in-the-middle
2100
x4663
1004F
Sonya and Bitwise OR
bitmasks
,
data structures
,
divide and conquer
2600
x696
993C
Careful Maneuvering
bitmasks
,
brute force
,
geometry
2100
x1480
993B
Open Communication
bitmasks
,
brute force
1900
x1929
986C
AND Graph
bitmasks
,
dfs and similar
,
dsu
,
graphs
2500
x2189
981E
Addition on Segments
bitmasks
,
data structures
,
divide and conquer
,
dp
2200
x1997
981D
Bookshelves
bitmasks
,
dp
,
greedy
1900
x3165
979D
Kuro and GCD and XOR and SUM
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
number theory
,
strings
,
trees
2200
x1684
961C
Chessboard
bitmasks
,
brute force
,
implementation
1400
x5226
960C
Subsequence Counting
bitmasks
,
constructive algorithms
,
greedy
,
implementation
1700
x3811
959F
Mahmoud and Ehab and yet another xor task
bitmasks
,
dp
,
math
,
matrices
2400
x1939
959E
Mahmoud and Ehab and the xor-MST
bitmasks
,
dp
,
graphs
,
implementation
,
math
1900
x3304
938G
Shortest Path Queries
bitmasks
,
data structures
,
dsu
,
graphs
2900
x859
938F
Erasing Substrings
bitmasks
,
dp
,
greedy
2700
x468
920G
List Of Integers
binary search
,
bitmasks
,
brute force
,
combinatorics
,
math
,
number theory
2200
x1673
916B
Jamie and Binary Sequence (changed after round)
bitmasks
,
greedy
,
math
2000
x1671
914G
Sum the Fibonacci
bitmasks
,
divide and conquer
,
dp
,
fft
,
math
2600
x893
914F
Substrings in a String
bitmasks
,
brute force
,
data structures
,
string suffix structures
,
strings
3000
x1443
914E
Palindromes in a Tree
bitmasks
,
data structures
,
divide and conquer
,
trees
2400
x1385
913E
Logical Expression
bitmasks
,
dp
,
shortest paths
2400
x743
913C
Party Lemonade
bitmasks
,
dp
,
greedy
1600
x7743
912B
New Year's Eve
bitmasks
,
constructive algorithms
,
number theory
1300
x11331
908E
New Year and Entity Enumeration
bitmasks
,
combinatorics
,
dp
,
math
2500
x733
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