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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
39:51:39
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math
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
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Problems
#
Name
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1664
1148E
Earth Wind and Fire
constructive algorithms
,
greedy
,
math
,
sortings
,
two pointers
2300
x1646
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1630
1217E
Sum Queries?
data structures
,
greedy
,
implementation
,
math
2300
x1630
1610E
AmShZ and G.O.A.T.
binary search
,
brute force
,
greedy
,
implementation
,
math
2300
x1617
1917D
Yet Another Inversions Problem
combinatorics
,
data structures
,
dp
,
implementation
,
math
,
number theory
2300
x1598
1101G
(Zero XOR Subset)-less
math
,
matrices
2300
x1589
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1583
1096F
Inversion Expectation
dp
,
math
,
probabilities
2300
x1561
1204E
Natasha, Sasha and the Prefix Sums
combinatorics
,
dp
,
math
,
number theory
2300
x1558
1411E
Poman Numbers
bitmasks
,
greedy
,
math
,
strings
2300
x1545
1929F
Sasha and the Wedding Binary Search Tree
brute force
,
combinatorics
,
data structures
,
dfs and similar
,
math
,
trees
2300
x1537
1842E
Tenzing and Triangle
data structures
,
dp
,
geometry
,
greedy
,
math
2300
x1502
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1474
845G
Shortest Path Problem?
dfs and similar
,
graphs
,
math
2300
x1473
1738E
Balance Addicts
combinatorics
,
dp
,
math
,
two pointers
2300
x1442
1594E2
Rubik's Cube Coloring (hard version)
brute force
,
dp
,
implementation
,
math
,
trees
2300
x1441
1928E
Modular Sequence
brute force
,
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
,
number theory
2300
x1432
1843F2
Omsk Metro (hard version)
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
math
,
trees
2300
x1429
1167F
Scalar Queries
combinatorics
,
data structures
,
math
,
sortings
2300
x1421
1548D1
Gregor and the Odd Cows (Easy)
bitmasks
,
geometry
,
math
,
number theory
2300
x1420
1927G
Paint Charges
data structures
,
dp
,
greedy
,
math
2300
x1409
1513E
Cost Equilibrium
combinatorics
,
constructive algorithms
,
math
,
sortings
2300
x1404
1276C
Beautiful Rectangle
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
greedy
,
math
2300
x1403
1929E
Sasha and the Happy Tree Cutting
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
2300
x1401
584E
Anton and Ira
constructive algorithms
,
greedy
,
math
2300
x1392
1623D
Robot Cleaner Revisit
implementation
,
math
,
probabilities
2300
x1342
993E
Nikita and Order Statistics
chinese remainder theorem
,
fft
,
math
2300
x1323
1156F
Card Bag
dp
,
math
,
probabilities
2300
x1313
601C
Kleofáš and the n-thlon
dp
,
math
,
probabilities
2300
x1281
711E
ZS and The Birthday Paradox
math
,
number theory
,
probabilities
2300
x1236
793C
Mice problem
geometry
,
implementation
,
math
,
sortings
2300
x1222
938E
Max History
combinatorics
,
math
2300
x1218
660E
Different Subsets For All Tuples
combinatorics
,
math
2300
x1217
1254C
Point Ordering
constructive algorithms
,
geometry
,
interactive
,
math
2300
x1207
830C
Bamboo Partition
brute force
,
data structures
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2300
x1179
772C
Vulnerable Kerbals
constructive algorithms
,
dp
,
graphs
,
math
,
number theory
2300
x1179
1797E
Li Hua and Array
brute force
,
data structures
,
dsu
,
math
,
number theory
,
two pointers
2300
x1159
1799E
City Union
constructive algorithms
,
dfs and similar
,
dsu
,
geometry
,
greedy
,
implementation
,
math
2300
x1124
898F
Restoring the Expression
brute force
,
hashing
,
math
2300
x1116
915G
Coprime Arrays
math
,
number theory
2300
x1114
300E
Empire Strikes Back
binary search
,
math
,
number theory
2300
x1019
768F
Barrels and boxes
brute force
,
combinatorics
,
math
,
number theory
,
probabilities
2300
x989
460D
Little Victor and Set
brute force
,
constructive algorithms
,
math
2300
x968
1200F
Graph Traveler
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
implementation
,
math
,
number theory
2300
x894
1933G
Turtle Magic: Royal Turtle Shell Pattern
bitmasks
,
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
math
2300
x798
126D
Fibonacci Sums
dp
,
math
2300
x797
1932G
Moving Platforms
graphs
,
math
,
number theory
,
shortest paths
2300
x792
1425D
Danger of Mad Snakes
combinatorics
,
dp
,
math
2300
x791
1039A
Timetable
constructive algorithms
,
data structures
,
greedy
,
math
2300
x770
596D
Wilbur and Trees
dp
,
math
,
probabilities
,
sortings
2300
x670
167C
Wizards and Numbers
games
,
math
2300
x655
385E
Bear in the Field
math
,
matrices
2300
x551
316E3
Summer Homework
data structures
,
math
2300
x503
1600F
Party Organization
brute force
,
math
,
probabilities
2300
x426
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x383
42D
Strange town
constructive algorithms
,
math
2300
x381
316E2
Summer Homework
data structures
,
math
2300
x377
50E
Square Equation Roots
math
2300
x340
180B
Divisibility Rules
math
,
number theory
2300
x324
78D
Archer's Shot
binary search
,
geometry
,
math
,
two pointers
2300
x297
40C
Berland Square
implementation
,
math
2300
x236
774E
Big Number and Remainder
*special problem
,
math
,
number theory
2300
x206
1346G
Two IP Cameras
*special problem
,
math
,
number theory
2300
x129
446C
DZY Loves Fibonacci Numbers
data structures
,
math
,
number theory
2400
x3135
932E
Team Work
combinatorics
,
dp
,
math
2400
x2639
632E
Thief in a Shop
divide and conquer
,
dp
,
fft
,
math
2400
x2512
1348E
Phoenix and Berries
brute force
,
dp
,
greedy
,
math
2400
x1968
1628D2
Game on Sum (Hard Version)
combinatorics
,
dp
,
games
,
math
2400
x1953
1392F
Omkar and Landslide
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
2400
x1917
959F
Mahmoud and Ehab and yet another xor task
bitmasks
,
dp
,
math
,
matrices
2400
x1912
1527D
MEX Tree
combinatorics
,
dfs and similar
,
implementation
,
math
,
trees
2400
x1808
1114F
Please, another Queries on Array?
bitmasks
,
data structures
,
divide and conquer
,
math
,
number theory
2400
x1788
24D
Broken robot
dp
,
math
,
probabilities
2400
x1765
1832D2
Red-Blue Operations (Hard Version)
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
2400
x1764
1617D2
Too Many Impostors (hard version)
constructive algorithms
,
implementation
,
interactive
,
math
2400
x1687
1706D2
Chopping Carrots (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2400
x1639
1592E
Bored Bakry
bitmasks
,
greedy
,
math
,
two pointers
2400
x1530
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1496
1830C
Hyperregular Bracket Strings
combinatorics
,
greedy
,
hashing
,
math
,
number theory
,
sortings
2400
x1485
1633E
Spanning Tree Queries
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1452
1667C
Half Queen Cover
constructive algorithms
,
math
2400
x1444
1227F2
Wrong Answer on test 233 (Hard Version)
combinatorics
,
math
2400
x1443
912E
Prime Gift
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
,
two pointers
2400
x1435
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1418
1455E
Four Points
brute force
,
constructive algorithms
,
flows
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
2400
x1418
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1402
1499E
Chaotic Merge
combinatorics
,
dp
,
math
,
strings
2400
x1382
1088E
Ehab and a component choosing problem
dp
,
greedy
,
math
,
trees
2400
x1379
1615E
Purple Crayon
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1375
1819C
The Fox and the Complete Tree Traversal
constructive algorithms
,
dp
,
implementation
,
math
,
trees
2400
x1363
1036F
Relatively Prime Powers
combinatorics
,
math
,
number theory
2400
x1345
1608D
Dominoes
combinatorics
,
fft
,
graphs
,
math
,
number theory
2400
x1342
1726E
Almost Perfect
combinatorics
,
fft
,
math
2400
x1328
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1291
1780E
Josuke and Complete Graph
binary search
,
brute force
,
data structures
,
math
,
number theory
2400
x1286
1770E
Koxia and Tree
combinatorics
,
dfs and similar
,
dp
,
dsu
,
math
,
probabilities
,
trees
2400
x1283
626E
Simple Skewness
binary search
,
math
,
ternary search
2400
x1282
1244G
Running in Pairs
constructive algorithms
,
greedy
,
math
2400
x1258
1237E
Balanced Binary Search Trees
dp
,
math
2400
x1257
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