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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
40:40:31
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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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Custom test
Problems
#
Name
286A
Lucky Permutation
constructive algorithms
,
math
1400
x3088
896C
Willem, Chtholly and Seniorious
data structures
,
probabilities
2600
x3089
1389E
Calendar Ambiguity
math
,
number theory
2200
x3091
198A
About Bacteria
implementation
,
math
1700
x3094
327C
Magic Five
combinatorics
,
math
1700
x3095
1068C
Colored Rooks
constructive algorithms
,
graphs
1700
x3099
35D
Animals
dp
,
greedy
1700
x3099
1271E
Common Number
binary search
,
combinatorics
,
dp
,
math
2100
x3101
128A
Statues
dfs and similar
1500
x3104
1163C1
Power Transmission (Easy Edition)
brute force
,
geometry
1900
x3111
730J
Bottles
dp
1900
x3111
863D
Yet Another Array Queries Problem
data structures
,
implementation
1800
x3113
1419E
Decryption
constructive algorithms
,
implementation
,
math
,
number theory
2100
x3116
1558C
Bottom-Tier Reversals
constructive algorithms
,
greedy
2000
x3119
1331C
...And after happily lived ever they
*special problem
,
bitmasks
x3119
437D
The Child and Zoo
dsu
,
sortings
1900
x3121
1685B
Linguistics
greedy
,
implementation
,
sortings
,
strings
2000
x3125
645C
Enduring Exodus
binary search
,
two pointers
1600
x3127
311B
Cats Transport
data structures
,
dp
2400
x3129
1175E
Minimal Segment Cover
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
implementation
,
trees
2200
x3130
670E
Correct Bracket Sequence Editor
data structures
,
dsu
,
strings
1700
x3130
643B
Bear and Two Paths
constructive algorithms
,
graphs
1600
x3131
446C
DZY Loves Fibonacci Numbers
data structures
,
math
,
number theory
2400
x3135
700A
As Fast As Possible
binary search
,
math
1900
x3139
1801C
Music Festival
binary search
,
data structures
,
dp
,
greedy
,
sortings
1900
x3142
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3143
981D
Bookshelves
bitmasks
,
dp
,
greedy
1900
x3143
1682D
Circular Spanning Tree
constructive algorithms
,
implementation
,
trees
2000
x3144
1624F
Interacdive Problem
binary search
,
constructive algorithms
,
interactive
2000
x3145
1316D
Nash Matrix
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
2000
x3145
1637E
Best Pair
binary search
,
brute force
,
implementation
2100
x3150
1103B
Game with modulo
binary search
,
constructive algorithms
,
interactive
2000
x3151
1673D
Lost Arithmetic Progression
combinatorics
,
math
,
number theory
1900
x3158
825D
Suitable Replacement
binary search
,
greedy
,
implementation
1500
x3158
8C
Looking for Order
bitmasks
,
dp
2000
x3161
169B
Replacing Digits
greedy
1100
x3163
682D
Alyona and Strings
dp
,
strings
1900
x3165
1776F
Train Splitting
constructive algorithms
,
graphs
,
greedy
1700
x3166
665D
Simple Subset
constructive algorithms
,
greedy
,
number theory
1800
x3166
44C
Holidays
implementation
1300
x3168
109C
Lucky Tree
dp
,
dsu
,
trees
1900
x3169
75B
Facetook Priority Wall
expression parsing
,
implementation
,
strings
1500
x3169
1690G
Count the Trains
binary search
,
data structures
,
greedy
,
sortings
2000
x3170
69B
Bets
greedy
,
implementation
1200
x3170
23B
Party
constructive algorithms
,
graphs
,
math
1600
x3171
613A
Peter and Snow Blower
binary search
,
geometry
,
ternary search
1900
x3173
1503C
Travelling Salesman Problem
binary search
,
data structures
,
dp
,
greedy
,
shortest paths
,
sortings
,
two pointers
2200
x3176
842D
Vitya and Strange Lesson
binary search
,
data structures
2000
x3178
451E
Devu and Flowers
bitmasks
,
combinatorics
,
number theory
2300
x3182
1012C
Hills
dp
1900
x3185
1784B
Letter Exchange
constructive algorithms
1900
x3186
708B
Recover the String
constructive algorithms
,
greedy
,
implementation
,
math
1900
x3188
1210C
Kamil and Making a Stream
math
,
number theory
,
trees
2000
x3189
873C
Strange Game On Matrix
greedy
,
two pointers
1600
x3189
811C
Vladik and Memorable Trip
dp
,
implementation
1900
x3190
576C
Points on Plane
constructive algorithms
,
divide and conquer
,
geometry
,
greedy
,
sortings
2100
x3191
893E
Counting Arrays
combinatorics
,
dp
,
math
,
number theory
2000
x3199
985E
Pencils and Boxes
binary search
,
data structures
,
dp
,
greedy
,
two pointers
2100
x3202
70A
Cookies
math
1300
x3202
263D
Cycle in Graph
dfs and similar
,
graphs
1800
x3204
963A
Alternating Sum
math
,
number theory
1800
x3207
245E
Mishap in Club
greedy
,
implementation
1400
x3209
1392E
Omkar and Duck
bitmasks
,
constructive algorithms
,
interactive
,
math
2100
x3211
1203F1
Complete the Projects (easy version)
greedy
2100
x3212
1553E
Permutation Shift
brute force
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
math
2100
x3215
663A
Rebus
constructive algorithms
,
expression parsing
,
greedy
,
math
1800
x3215
766D
Mahmoud and a Dictionary
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
2000
x3221
702D
Road to Post Office
math
1900
x3222
1787D
Game on Axis
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
implementation
1900
x3223
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3224
374B
Inna and Nine
combinatorics
,
greedy
1500
x3225
550D
Regular Bridge
constructive algorithms
,
graphs
,
implementation
1900
x3228
1198C
Matching vs Independent Set
constructive algorithms
,
graphs
,
greedy
,
sortings
2000
x3230
1265E
Beautiful Mirrors
data structures
,
dp
,
math
,
probabilities
2100
x3234
1886D
Monocarp and the Set
combinatorics
,
data structures
,
math
2100
x3235
107B
Basketball Team
combinatorics
,
dp
,
math
,
probabilities
1600
x3237
1110D
Jongmah
dp
2200
x3241
1762D
GCD Queries
constructive algorithms
,
interactive
,
number theory
2100
x3245
1142A
The Beatles
brute force
,
math
1700
x3250
839B
Game of the Rows
brute force
,
greedy
,
implementation
1900
x3250
1662M
Bottle Arrangements
constructive algorithms
x3254
1656E
Equal Tree Sums
constructive algorithms
,
dfs and similar
,
math
,
trees
2200
x3255
1473E
Minimum Path
graphs
,
shortest paths
2400
x3255
1288E
Messenger Simulator
data structures
2000
x3255
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3257
915D
Almost Acyclic Graph
dfs and similar
,
graphs
2200
x3257
938C
Constructing Tests
binary search
,
brute force
,
constructive algorithms
1700
x3264
498C
Array and Operations
flows
,
graph matchings
,
number theory
2100
x3264
1891F
A Growing Tree
data structures
,
dfs and similar
,
trees
2000
x3271
959E
Mahmoud and Ehab and the xor-MST
bitmasks
,
dp
,
graphs
,
implementation
,
math
1900
x3273
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3280
847A
Union of Doubly Linked Lists
implementation
1500
x3281
756B
Travel Card
binary search
,
dp
1600
x3282
1774E
Two Chess Pieces
dfs and similar
,
dp
,
greedy
,
trees
1900
x3283
1738D
Permutation Addicts
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
trees
1900
x3283
1663B
Mike's Sequence
*special problem
,
divide and conquer
,
implementation
,
math
x3283
958B1
Maximum Control (easy)
implementation
1000
x3283
1921F
Sum of Progression
brute force
,
data structures
,
dp
,
implementation
,
math
1900
x3284
1794D
Counting Factorizations
combinatorics
,
divide and conquer
,
dp
,
math
,
number theory
1900
x3284
931C
Laboratory Work
implementation
,
math
1700
x3285
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