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Codeforces Round 941 (Div. 1)
2 days
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Codeforces Round 941 (Div. 2)
2 days
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data structures
combine-tags-by-or
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2-sat
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bitmasks
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dfs and similar
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Problems
#
Name
313E
Ilya and Two Numbers
constructive algorithms
,
data structures
,
dsu
,
greedy
2300
x540
316E3
Summer Homework
data structures
,
math
2300
x504
873E
Awards For Contestants
brute force
,
data structures
,
dp
2300
x487
316E2
Summer Homework
data structures
,
math
2300
x380
1403B
Spring cleaning
*special problem
,
data structures
,
dfs and similar
,
graphs
,
trees
2300
x358
1488F
Dogecoin
*special problem
,
*special problem
,
binary search
,
data structures
2300
x167
342E
Xenia and Tree
data structures
,
divide and conquer
,
trees
2400
x7575
375D
Tree and Queries
data structures
,
dfs and similar
,
trees
2400
x6166
865D
Buy Low Sell High
constructive algorithms
,
data structures
,
greedy
2400
x4712
1083E
The Fair Nut and Rectangles
data structures
,
dp
,
geometry
2400
x3774
1000F
One Occurrence
data structures
,
divide and conquer
2400
x3496
311B
Cats Transport
data structures
,
dp
2400
x3177
446C
DZY Loves Fibonacci Numbers
data structures
,
math
,
number theory
2400
x3162
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x2945
145E
Lucky Queries
data structures
2400
x2891
444C
DZY Loves Colors
data structures
2400
x2772
786C
Till I Collapse
data structures
,
divide and conquer
2400
x2509
1187D
Subarray Sorting
data structures
,
sortings
2400
x2447
1709E
XOR Tree
bitmasks
,
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
2400
x2423
484D
Kindergarten
data structures
,
dp
,
greedy
2400
x2408
1251E2
Voting (Hard Version)
binary search
,
data structures
,
greedy
2400
x2352
915F
Imbalance Value of a Tree
data structures
,
dsu
,
graphs
,
trees
2400
x2299
1428F
Fruit Sequences
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2400
x2160
1401E
Divide Square
data structures
,
geometry
,
implementation
,
sortings
2400
x2152
379F
New Year Tree
data structures
,
divide and conquer
,
trees
2400
x2109
1436E
Complicated Computations
binary search
,
data structures
,
two pointers
2400
x2106
1358E
Are You Fired?
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x2077
1837F
Editorial for Two
binary search
,
data structures
,
greedy
,
implementation
2400
x2056
1369E
DeadLee
data structures
,
dfs and similar
,
greedy
,
implementation
,
sortings
2400
x2013
5E
Bindian Signalizing
data structures
2400
x2003
12D
Ball
data structures
,
sortings
2400
x1963
1326E
Bombs
data structures
,
two pointers
2400
x1953
1392F
Omkar and Landslide
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
2400
x1939
1408E
Avoid Rainbow Cycles
data structures
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1874
1485F
Copy or Prefix Sum
combinatorics
,
data structures
,
dp
,
sortings
2400
x1861
1609E
William The Oblivious
bitmasks
,
data structures
,
dp
,
matrices
2400
x1835
1114F
Please, another Queries on Array?
bitmasks
,
data structures
,
divide and conquer
,
math
,
number theory
2400
x1808
1638E
Colorful Operations
brute force
,
data structures
,
implementation
2400
x1786
1827B2
Range Sorting (Hard Version)
binary search
,
data structures
,
dp
,
greedy
2400
x1754
1720D2
Xor-Subsequence (hard version)
bitmasks
,
data structures
,
dp
,
strings
,
trees
2400
x1723
710F
String Set Queries
brute force
,
data structures
,
hashing
,
interactive
,
string suffix structures
,
strings
2400
x1665
1494E
A-Z Graph
constructive algorithms
,
data structures
,
graphs
,
hashing
2400
x1650
1706D2
Chopping Carrots (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2400
x1649
525D
Arthur and Walls
constructive algorithms
,
data structures
,
graphs
,
greedy
,
shortest paths
2400
x1631
1373F
Network Coverage
binary search
,
constructive algorithms
,
data structures
,
greedy
2400
x1618
121E
Lucky Array
data structures
2400
x1605
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1594
1634E
Fair Share
constructive algorithms
,
data structures
,
dfs and similar
,
graph matchings
,
graphs
2400
x1593
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1559
916E
Jamie and Tree
data structures
,
trees
2400
x1549
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1509
1713E
Cross Swapping
2-sat
,
data structures
,
dsu
,
greedy
,
matrices
2400
x1506
1329C
Drazil Likes Heap
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x1500
1826E
Walk the Runway
bitmasks
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
2400
x1493
1093E
Intersection of Permutations
data structures
2400
x1481
1401F
Reverse and Swap
binary search
,
bitmasks
,
data structures
2400
x1469
869E
The Untended Antiquity
data structures
,
hashing
2400
x1465
1633E
Spanning Tree Queries
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1455
1367F2
Flying Sort (Hard Version)
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2400
x1440
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1439
1615E
Purple Crayon
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1394
914E
Palindromes in a Tree
bitmasks
,
data structures
,
divide and conquer
,
trees
2400
x1374
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1358
115E
Linear Kingdom Races
data structures
,
dp
2400
x1357
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1352
1059E
Split the Tree
binary search
,
data structures
,
dp
,
greedy
,
trees
2400
x1351
220E
Little Elephant and Inversions
data structures
,
two pointers
2400
x1325
1598F
RBS
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
2400
x1319
1780E
Josuke and Complete Graph
binary search
,
brute force
,
data structures
,
math
,
number theory
2400
x1297
1860E
Fast Travel Text Editor
data structures
,
dfs and similar
,
graphs
,
shortest paths
2400
x1291
1304F2
Animal Observation (hard version)
data structures
,
dp
,
greedy
2400
x1274
1042F
Leaf Sets
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2400
x1235
1736C2
Good Subarrays (Hard Version)
binary search
,
data structures
,
dp
,
two pointers
2400
x1229
1343F
Restore the Permutation by Sorted Segments
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
2400
x1228
593D
Happy Tree Party
data structures
,
dfs and similar
,
graphs
,
math
,
trees
2400
x1178
524E
Rooks and Rectangles
data structures
,
sortings
2400
x1151
1935E
Distance Learning Courses in MAC
bitmasks
,
brute force
,
data structures
,
greedy
,
math
2400
x1137
1264C
Beautiful Mirrors with queries
data structures
,
probabilities
2400
x1120
1632E1
Distance Tree (easy version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
trees
2400
x1107
601D
Acyclic Organic Compounds
data structures
,
dfs and similar
,
dsu
,
hashing
,
strings
,
trees
2400
x1088
377D
Developing Game
data structures
2400
x1079
1089K
King Kog's Reception
data structures
2400
x1078
1619H
Permutation and Queries
brute force
,
data structures
,
divide and conquer
,
two pointers
2400
x1065
498D
Traffic Jams in the Land
data structures
,
dp
,
number theory
2400
x1061
1936C
Pokémon Arena
data structures
,
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
2400
x1045
452E
Three strings
data structures
,
dsu
,
string suffix structures
,
strings
2400
x1025
258E
Little Elephant and Tree
data structures
,
dfs and similar
,
trees
2400
x1025
749E
Inversions After Shuffle
data structures
,
probabilities
2400
x1024
1735E
House Planning
constructive algorithms
,
data structures
,
graph matchings
,
greedy
2400
x1021
1774F1
Magician and Pigs (Easy Version)
brute force
,
data structures
,
implementation
2400
x1017
1585E
Frequency Queries
data structures
,
dfs and similar
,
trees
2400
x1011
1004E
Sonya and Ice Cream
binary search
,
data structures
,
dp
,
greedy
,
shortest paths
,
trees
2400
x1007
1794E
Labeling the Tree with Distances
data structures
,
dp
,
greedy
,
hashing
,
implementation
,
trees
2400
x1003
707E
Garlands
data structures
2400
x999
1282E
The Cake Is a Lie
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
2400
x990
1107G
Vasya and Maximum Profit
binary search
,
constructive algorithms
,
data structures
,
dp
,
dsu
2400
x986
1091E
New Year and the Acquaintance Estimation
binary search
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
sortings
2400
x974
1221F
Choose a Square
binary search
,
data structures
,
sortings
2400
x973
1044D
Deduction Queries
data structures
,
dsu
2400
x968
1132G
Greedy Subsequences
data structures
,
dp
,
trees
2400
x951
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