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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
21:46:48
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binary search
combine-tags-by-or
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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
1709D
Rorororobot
binary search
,
data structures
,
greedy
,
math
1700
x8494
1707E
Replace
binary search
,
data structures
3500
x726
1707A
Doremy's IQ
binary search
,
constructive algorithms
,
greedy
,
implementation
1600
x13737
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2776
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x7037
1705E
Mark and Professor Koro
binary search
,
bitmasks
,
brute force
,
combinatorics
,
data structures
,
greedy
2300
x2108
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x20470
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5728
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x17354
1700D
River Locks
binary search
,
dp
,
greedy
,
math
1900
x6160
1698D
Fixed Point Guessing
binary search
,
constructive algorithms
,
interactive
1600
x9451
1697D
Guess The String
binary search
,
constructive algorithms
,
interactive
1900
x4492
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x14470
1696D
Permutation Graph
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
shortest paths
1900
x5498
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x419
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x22534
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5873
1690G
Count the Trains
binary search
,
data structures
,
greedy
,
sortings
2000
x3431
1690E
Price Maximization
binary search
,
greedy
,
math
,
two pointers
1500
x15340
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x605
1687C
Sanae and Giant Robot
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2500
x1436
1684E
MEX vs DIFF
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2100
x3195
1680C
Binary String
binary search
,
greedy
,
strings
,
two pointers
1600
x10032
1679D
Toss a Coin to Your Graph...
binary search
,
dfs and similar
,
dp
,
graphs
1900
x4939
1676E
Eating Queries
binary search
,
greedy
,
sortings
1100
x26964
1674E
Breaking the Wall
binary search
,
brute force
,
constructive algorithms
,
greedy
,
math
2000
x6502
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x2263
1671C
Dolce Vita
binary search
,
brute force
,
greedy
,
math
1200
x17503
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x5169
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x26609
1666E
Even Split
binary search
,
constructive algorithms
,
greedy
,
math
2500
x742
1665C
Tree Infection
binary search
,
greedy
,
sortings
,
trees
1600
x8436
1661F
Teleporters
binary search
,
greedy
2600
x604
1661C
Water the Trees
binary search
,
greedy
,
math
1700
x9438
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x10692
1657D
For Gamers. By Gamers.
binary search
,
brute force
,
greedy
,
math
,
sortings
2000
x4931
1656F
Parametric MST
binary search
,
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
2600
x1072
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x382
1651D
Nearest Excluded Points
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
1900
x5202
1650E
Rescheduling the Exam
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1900
x4174
1641C
Anonymity Is Important
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2200
x2506
1637E
Best Pair
binary search
,
brute force
,
implementation
2100
x3387
1633E
Spanning Tree Queries
binary search
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
,
trees
2400
x1554
1632E2
Distance Tree (hard version)
binary search
,
dfs and similar
,
shortest paths
,
trees
2700
x1001
1632E1
Distance Tree (easy version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
trees
2400
x1180
1632D
New Year Concert
binary search
,
data structures
,
greedy
,
math
,
number theory
,
two pointers
2000
x4738
1632C
Strange Test
binary search
,
bitmasks
,
brute force
,
dp
,
math
1600
x12824
1630B
Range and Partition
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
1800
x5797
1628F
Spaceship Crisis Management
binary search
,
data structures
,
geometry
,
sortings
3500
x89
1628E
Groceries in Meteor Town
binary search
,
data structures
,
dsu
,
trees
3100
x912
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x15743
1626D
Martial Arts Tournament
binary search
,
brute force
,
greedy
,
math
2100
x3938
1626C
Monsters And Spells
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1700
x10986
1625E2
Cats on the Upgrade (hard version)
binary search
,
data structures
,
dfs and similar
,
graphs
,
trees
2800
x601
1624F
Interacdive Problem
binary search
,
constructive algorithms
,
interactive
2000
x3387
1624D
Palindromes Coloring
binary search
,
greedy
,
sortings
,
strings
1400
x17174
1623C
Balanced Stone Heaps
binary search
,
greedy
1600
x12285
1622C
Set or Decrease
binary search
,
brute force
,
greedy
,
sortings
1600
x13199
1621E
New School
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
2300
x1769
1619G
Unusual Minesweeper
binary search
,
dfs and similar
,
dsu
,
greedy
,
sortings
2000
x2428
1619D
New Year's Problem
binary search
,
greedy
,
sortings
1800
x7638
1617C
Paprika and Permutation
binary search
,
greedy
,
math
,
sortings
1300
x15071
1615H
Reindeer Games
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
flows
,
graphs
,
shortest paths
3000
x331
1614E
Divan and a Cottage
binary search
,
data structures
2600
x833
1613C
Poisoned Dagger
binary search
1200
x24882
1612C
Chat Ban
binary search
,
math
1300
x17825
1611F
ATM and Students
binary search
,
data structures
,
two pointers
1800
x6510
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x29822
1610E
AmShZ and G.O.A.T.
binary search
,
brute force
,
greedy
,
implementation
,
math
2300
x1707
1610C
Keshi Is Throwing a Party
binary search
,
greedy
1600
x11739
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9804
1608G
Alphabetic Tree
binary search
,
data structures
,
dfs and similar
,
hashing
,
string suffix structures
,
strings
,
trees
3500
x161
1608E
The Cells on the Paper
binary search
,
implementation
,
sortings
2800
x442
1605E
Array Equalizer
binary search
,
greedy
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2400
x1057
1601F
Two Sorts
binary search
,
dfs and similar
,
math
,
meet-in-the-middle
3400
x188
1598F
RBS
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
2400
x1449
1593C
Save More Mice
binary search
,
greedy
,
greedy
1000
x25075
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2325
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x22393
1588F
Jumping Through the Array
binary search
,
data structures
,
graphs
,
two pointers
3500
x286
1584E
Game with Stones
binary search
,
data structures
,
games
,
greedy
2300
x1297
1584D
Guess the Permutation
binary search
,
combinatorics
,
interactive
,
math
2000
x3705
1582F2
Korney Korneevich and XOR (hard version)
binary search
,
brute force
,
dp
,
greedy
,
two pointers
2400
x1851
1582E
Pchelyonok and Segments
binary search
,
data structures
,
dp
,
greedy
,
math
2000
x3792
1578L
Labyrinth
binary search
,
dsu
,
greedy
2400
x1219
1575J
Jeopardy of Dropped Balls
binary search
,
brute force
,
dsu
,
implementation
1500
x3842
1575B
Building an Amusement Park
binary search
,
geometry
2300
x480
1574D
The Strongest Build
binary search
,
brute force
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
hashing
,
implementation
2000
x4525
1574C
Slay the Dragon
binary search
,
greedy
,
sortings
,
ternary search
1300
x17259
1572E
Polygon
binary search
,
dp
,
geometry
3000
x298
1572A
Book
binary search
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
1800
x9125
1571I
Physical Examination
*special problem
,
binary search
,
data structures
3200
x59
1569D
Inconvenient Pairs
binary search
,
data structures
,
implementation
,
sortings
,
two pointers
1900
x4403
1566A
Median Maximization
binary search
,
greedy
,
math
800
x23546
1561C
Deep Down Below
binary search
,
greedy
,
sortings
1300
x14964
1560F1
Nearest Beautiful Number (easy version)
binary search
,
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
1900
x6183
1560E
Polycarp and String Transformation
binary search
,
implementation
,
sortings
,
strings
1800
x8101
1558E
Down Below
binary search
,
dfs and similar
,
graphs
,
greedy
,
meet-in-the-middle
,
shortest paths
3000
x478
1554C
Mikasa
binary search
,
bitmasks
,
greedy
,
implementation
1800
x8973
1552H
Guess the Perimeter
binary search
,
interactive
,
number theory
3300
x393
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