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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
31:48:31
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Difficulty:
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probabilities
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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Status
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Custom test
Problems
#
Name
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1376
1305F
Kuroni and the Punishment
math
,
number theory
,
probabilities
2500
x2294
840D
Destiny
data structures
,
probabilities
2500
x2721
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x288
717H
Pokermon League challenge
math
,
probabilities
2400
x413
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x424
633E
Startup Funding
binary search
,
constructive algorithms
,
data structures
,
probabilities
,
two pointers
2400
x566
513G2
Inversions problem
dp
,
probabilities
2400
x622
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x660
441E
Valera and Number
bitmasks
,
dp
,
math
,
probabilities
2400
x664
1061F
Lost Root
interactive
,
probabilities
2400
x671
26D
Tickets
combinatorics
,
math
,
probabilities
2400
x738
417E
Square Table
constructive algorithms
,
math
,
probabilities
2400
x759
1194F
Crossword Expert
combinatorics
,
dp
,
number theory
,
probabilities
,
two pointers
2400
x950
749E
Inversions After Shuffle
data structures
,
probabilities
2400
x997
641D
Little Artem and Random Variable
dp
,
implementation
,
math
,
probabilities
2400
x1044
1264C
Beautiful Mirrors with queries
data structures
,
probabilities
2400
x1116
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1137
698C
LRU
bitmasks
,
dp
,
math
,
probabilities
2400
x1234
1770E
Koxia and Tree
combinatorics
,
dfs and similar
,
dp
,
dsu
,
math
,
probabilities
,
trees
2400
x1283
1418E
Expected Damage
binary search
,
combinatorics
,
probabilities
2400
x1704
24D
Broken robot
dp
,
math
,
probabilities
2400
x1766
1523D
Love-Hate
bitmasks
,
brute force
,
dp
,
probabilities
2400
x2060
1600F
Party Organization
brute force
,
math
,
probabilities
2300
x426
101D
Castle
dp
,
greedy
,
probabilities
,
sortings
,
trees
2300
x667
596D
Wilbur and Trees
dp
,
math
,
probabilities
,
sortings
2300
x670
895E
Eyes Closed
data structures
,
probabilities
2300
x902
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x964
1172C1
Nauuo and Pictures (easy version)
dp
,
probabilities
2300
x974
768F
Barrels and boxes
brute force
,
combinatorics
,
math
,
number theory
,
probabilities
2300
x989
444B
DZY Loves FFT
probabilities
2300
x1012
1245E
Hyakugoku and Ladders
dp
,
probabilities
,
shortest paths
2300
x1106
1151F
Sonya and Informatics
combinatorics
,
dp
,
matrices
,
probabilities
2300
x1123
711E
ZS and The Birthday Paradox
math
,
number theory
,
probabilities
2300
x1236
1310D
Tourism
dp
,
graphs
,
probabilities
2300
x1272
601C
Kleofáš and the n-thlon
dp
,
math
,
probabilities
2300
x1281
1156F
Card Bag
dp
,
math
,
probabilities
2300
x1313
1623D
Robot Cleaner Revisit
implementation
,
math
,
probabilities
2300
x1342
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1391
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1474
1096F
Inversion Expectation
dp
,
math
,
probabilities
2300
x1561
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1664
960E
Alternating Tree
combinatorics
,
dfs and similar
,
divide and conquer
,
dp
,
probabilities
,
trees
2300
x1790
1139D
Steps to One
dp
,
math
,
number theory
,
probabilities
2300
x1961
1824B2
LuoTianyi and the Floating Islands (Hard Version)
combinatorics
,
dfs and similar
,
math
,
probabilities
,
trees
2300
x2450
1540B
Tree Array
brute force
,
combinatorics
,
dp
,
graphs
,
math
,
probabilities
,
trees
2300
x2469
98B
Help King
implementation
,
probabilities
,
trees
2200
x113
85C
Petya and Tree
binary search
,
dfs and similar
,
probabilities
,
sortings
,
trees
2200
x520
1765F
Chemistry Lab
dp
,
geometry
,
probabilities
2200
x583
150C
Smart Cheater
data structures
,
math
,
probabilities
2200
x623
1045D
Interstellar battle
math
,
probabilities
,
trees
2200
x626
1773B
BinCoin
binary search
,
divide and conquer
,
hashing
,
implementation
,
probabilities
,
trees
2200
x718
138C
Mushroom Gnomes - 2
binary search
,
data structures
,
probabilities
,
sortings
2200
x843
28C
Bath Queue
combinatorics
,
dp
,
probabilities
2200
x959
1918E
ace5 and Task Order
constructive algorithms
,
divide and conquer
,
implementation
,
interactive
,
probabilities
,
sortings
2200
x1417
678E
Another Sith Tournament
bitmasks
,
dp
,
math
,
probabilities
2200
x1889
1840G1
In Search of Truth (Easy Version)
constructive algorithms
,
interactive
,
math
,
meet-in-the-middle
,
probabilities
2200
x2180
908D
New Year and Arbitrary Arrangement
dp
,
math
,
probabilities
2200
x2224
1097D
Makoto and a Blackboard
dp
,
math
,
number theory
,
probabilities
2200
x2543
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x2716
1114E
Arithmetic Progression
binary search
,
interactive
,
number theory
,
probabilities
2200
x2751
280C
Game on Tree
implementation
,
math
,
probabilities
,
trees
2200
x3419
50D
Bombing
binary search
,
dp
,
probabilities
2100
x592
859D
Third Month Insanity
dp
,
probabilities
,
trees
2100
x846
268E
Playlist
math
,
probabilities
,
sortings
2100
x969
452C
Magic Trick
combinatorics
,
math
,
probabilities
2100
x1386
1525E
Assimilation IV
combinatorics
,
dp
,
math
,
probabilities
,
two pointers
2100
x1916
912D
Fishes
data structures
,
graphs
,
greedy
,
probabilities
,
shortest paths
2100
x1929
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2265
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2438
1778D
Flexible String Revisit
combinatorics
,
dp
,
math
,
probabilities
2100
x2494
1265E
Beautiful Mirrors
data structures
,
dp
,
math
,
probabilities
2100
x3234
204C
Little Elephant and Furik and Rubik
math
,
probabilities
2000
x1062
870D
Something with XOR Queries
brute force
,
interactive
,
probabilities
2000
x1167
54C
First Digit Law
dp
,
math
,
probabilities
2000
x1234
513C
Second price auction
bitmasks
,
probabilities
2000
x1515
1599C
Bubble Strike
combinatorics
,
math
,
probabilities
,
ternary search
2000
x1540
843B
Interactive LowerBound
brute force
,
interactive
,
probabilities
2000
x2123
1612E
Messages
brute force
,
dp
,
greedy
,
probabilities
,
sortings
2000
x2363
1009E
Intercity Travelling
combinatorics
,
math
,
probabilities
2000
x2869
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3280
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3509
1753C
Wish I Knew How to Sort
dp
,
math
,
probabilities
2000
x4107
109B
Lucky Probability
brute force
,
probabilities
1900
x1313
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1319
261B
Maxim and Restaurant
dp
,
math
,
probabilities
1900
x1356
1773A
Amazing Trick
constructive algorithms
,
graph matchings
,
math
,
probabilities
1900
x1449
351B
Jeff and Furik
combinatorics
,
dp
,
probabilities
1900
x2260
935D
Fafa and Ancient Alphabet
math
,
probabilities
1900
x2507
1925D
Good Trip
combinatorics
,
dp
,
math
,
probabilities
1900
x3079
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3144
1453D
Checkpoints
brute force
,
constructive algorithms
,
greedy
,
math
,
probabilities
1900
x4064
16E
Fish
bitmasks
,
dp
,
probabilities
1900
x4525
540D
Bad Luck Island
dp
,
probabilities
1900
x5115
1543C
Need for Pink Slips
bitmasks
,
brute force
,
dfs and similar
,
implementation
,
math
,
probabilities
1900
x5160
105B
Dark Assembly
brute force
,
probabilities
1800
x787
30C
Shooting Gallery
dp
,
probabilities
1800
x1840
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2071
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2176
952D
I'm Feeling Lucky!
probabilities
1800
x2374
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