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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
40:43:07
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Difficulty:
—
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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Custom test
Problems
#
Name
1267J
Just Arrange the Icons
greedy
,
implementation
,
math
1800
x2500
1267G
Game Relics
math
,
probabilities
3000
x614
1266H
Red-Blue Graph
dp
,
graphs
,
math
,
matrices
,
meet-in-the-middle
3400
x96
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3351
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9273
1266B
Dice Tower
constructive algorithms
,
math
1000
x14165
1266A
Competitive Programmer
chinese remainder theorem
,
math
1000
x14800
1265E
Beautiful Mirrors
data structures
,
dp
,
math
,
probabilities
2100
x3234
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12229
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13232
1263A
Sweet Problem
math
1100
x15788
1261F
Xor-Set
bitmasks
,
divide and conquer
,
math
3100
x367
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x7811
1260B
Obtain Two Zeroes
binary search
,
math
1300
x14997
1260A
Heating
math
1000
x14042
1257G
Divisor Set
divide and conquer
,
fft
,
greedy
,
math
,
number theory
2600
x561
1257B
Magic Stick
math
1000
x19502
1257A
Two Rival Students
greedy
,
math
800
x19967
1256A
Payment Without Change
math
1000
x28089
1255A
Changing Volume
math
800
x16818
1254C
Point Ordering
constructive algorithms
,
geometry
,
interactive
,
math
2300
x1207
1254B2
Send Boxes to Alice (Hard Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
2100
x2878
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4346
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x13705
1252K
Addition Robot
data structures
,
math
,
matrices
2100
x1774
1250L
Divide The Students
binary search
,
greedy
,
math
1500
x4000
1250H
Happy Birthday
math
1500
x3938
1250B
The Feast and the Bus
brute force
,
constructive algorithms
,
greedy
,
math
1800
x2549
1249C2
Good Numbers (hard version)
binary search
,
greedy
,
math
,
meet-in-the-middle
1500
x12132
1249B2
Books Exchange (hard version)
dfs and similar
,
dsu
,
math
1300
x16149
1249B1
Books Exchange (easy version)
dsu
,
math
1000
x19980
1249A
Yet Another Dividing into Teams
math
800
x21759
1248B
Grow The Tree
greedy
,
math
,
sortings
900
x16400
1248A
Integer Points
geometry
,
math
1000
x13713
1245A
Good ol' Numbers Coloring
math
,
number theory
1000
x13846
1244G
Running in Pairs
constructive algorithms
,
greedy
,
math
2400
x1258
1244C
The Football Season
brute force
,
math
,
number theory
2000
x7357
1244A
Pens and Pencils
math
800
x18758
1242D
Number Discovery
math
3400
x174
1242A
Tile Painting
constructive algorithms
,
math
,
number theory
1500
x12214
1239A
Ivan the Fool and the Probability Theory
combinatorics
,
dp
,
math
1700
x7062
1238C
Standard Free2play
dp
,
greedy
,
math
1600
x7071
1238A
Prime Subtraction
math
,
number theory
900
x23065
1237E
Balanced Binary Search Trees
dp
,
math
2400
x1257
1237A
Balanced Rating Changes
implementation
,
math
1000
x18354
1236F
Alice and the Cactus
dfs and similar
,
graphs
,
math
,
probabilities
3000
x163
1236B
Alice and the List of Presents
combinatorics
,
math
1500
x10577
1236A
Stones
brute force
,
greedy
,
math
800
x15731
1234E
Special Permutations
math
2000
x2566
1234A
Equalize Prices Again
math
800
x27138
1228E
Another Filling the Grid
combinatorics
,
dp
,
math
2300
x2445
1228C
Primes and Multiplication
math
,
number theory
1700
x8648
1228B
Filling the Grid
implementation
,
math
1400
x11267
1227F2
Wrong Answer on test 233 (Hard Version)
combinatorics
,
math
2400
x1443
1227A
Math Problem
math
1100
x9418
1225D
Power Products
hashing
,
math
,
number theory
1800
x7300
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8594
1225A
Forgetting Things
math
900
x15445
1223G
Wooden Raft
binary search
,
math
,
number theory
3200
x225
1223A
CME
math
800
x21261
1221C
Perfect Team
binary search
,
math
1200
x19988
1221A
2048 Game
brute force
,
greedy
,
math
1000
x16253
1220D
Alex and Julian
bitmasks
,
math
,
number theory
1900
x3634
1220B
Multiplication Table
math
,
number theory
1300
x11303
1217E
Sum Queries?
data structures
,
greedy
,
implementation
,
math
2300
x1630
1217B
Zmei Gorynich
greedy
,
math
1600
x10864
1217A
Creating a Character
binary search
,
math
1300
x14589
1216E2
Numerical Sequence (hard version)
binary search
,
math
2200
x1412
1216E1
Numerical Sequence (easy version)
binary search
,
brute force
,
math
1900
x3331
1216D
Swords
math
1300
x10770
1216C
White Sheet
geometry
,
math
1700
x8693
1215D
Ticket Game
games
,
greedy
,
math
1700
x5950
1215A
Yellow Cards
greedy
,
implementation
,
math
1000
x11226
1214E
Petya and Construction Set
constructive algorithms
,
graphs
,
math
,
sortings
,
trees
2000
x2491
1214B
Badges
brute force
,
math
1100
x10477
1214A
Optimal Currency Exchange
brute force
,
math
1400
x8678
1213D2
Equalizing by Division (hard version)
brute force
,
math
,
sortings
1600
x10978
1213C
Book Reading
math
1200
x17871
1213A
Chips Moving
math
900
x23350
1211G
King's Path
*special problem
,
math
,
trees
2500
x65
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x220
1210E
Wojtek and Card Tricks
math
2700
x389
1210C
Kamil and Making a Stream
math
,
number theory
,
trees
2000
x3189
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x132
1209B
Koala and Lights
implementation
,
math
,
number theory
1300
x7913
1209A
Paint the Numbers
greedy
,
implementation
,
math
800
x11887
1208G
Polygons
greedy
,
math
,
number theory
2800
x718
1208A
XORinacci
math
900
x16204
1207E
XOR Guessing
bitmasks
,
interactive
,
math
1900
x5561
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x21222
1206A
Choose Two Numbers
math
,
sortings
800
x23369
1205F
Beauty of a Permutation
constructive algorithms
,
math
3400
x119
1205A
Almost Equal
constructive algorithms
,
greedy
,
math
1200
x13776
1204E
Natasha, Sasha and the Prefix Sums
combinatorics
,
dp
,
math
,
number theory
2300
x1558
1204D2
Kirk and a Binary String (hard version)
data structures
,
greedy
,
math
,
strings
2100
x2958
1204B
Mislove Has Lost an Array
greedy
,
math
900
x17049
1204A
BowWow and the Timetable
math
1000
x19731
1203C
Common Divisors
implementation
,
math
1300
x19402
1203B
Equal Rectangles
greedy
,
math
1200
x15479
1202F
You Are Given Some Letters...
binary search
,
implementation
,
math
2700
x366
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