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Rayan
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Before contest
Codeforces Round 1006 (Div. 3)
30:15:53
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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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Problems
#
Name
958A1
Death Stars (easy)
implementation
1400
x1707
957A
Tritonic Iridescence
implementation
1300
x5822
955F
Heaps
dp
,
trees
2600
x389
955E
Icicles
2900
x97
955D
Scissors
brute force
,
strings
2600
x488
955C
Sad powers
binary search
,
math
,
number theory
2100
x2743
955B
Not simply beatiful strings
implementation
1400
x4895
955A
Feed the cat
greedy
,
math
1100
x6751
954I
Yet Another String Matching Problem
fft
,
math
2200
x1088
954H
Path Counting
combinatorics
,
dp
2500
x614
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x2212
954F
Runner's Problem
dp
,
matrices
,
sortings
2100
x1252
954E
Water Taps
binary search
,
greedy
,
sortings
2000
x1952
954D
Fight Against Traffic
dfs and similar
,
graphs
,
shortest paths
1600
x6872
954C
Matrix Walk
implementation
1700
x3832
954B
String Typing
implementation
,
strings
1400
x7356
954A
Diagonal Walking
implementation
800
x10668
952G
Puzzling Language
constructive algorithms
2200
x240
952F
2 + 2 != 4
2400
x405
952E
Cheese Board
2000
x648
952D
I'm Feeling Lucky!
probabilities
1800
x2479
952C
Ravioli Sort
implementation
1600
x2941
952B
A Map of the Cat
*special problem
,
brute force
,
interactive
1900
x2072
952A
Quirky Quantifiers
math
800
x11451
950B
Intercepted Message
greedy
,
implementation
1100
x7660
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x15569
949F
Astronomy
geometry
,
probabilities
3300
x60
949E
Binary Cards
brute force
2700
x678
949D
Curfew
binary search
,
brute force
,
greedy
,
sortings
2300
x835
949C
Data Center Maintenance
dfs and similar
,
graphs
1900
x2108
949B
A Leapfrog in the Array
constructive algorithms
,
math
1700
x3748
949A
Zebras
greedy
1600
x5458
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x14161
946G
Almost Increasing Array
data structures
,
dp
2500
x718
946F
Fibonacci String Subsequences
combinatorics
,
dp
,
matrices
2400
x585
946E
Largest Beautiful Number
greedy
,
implementation
2200
x1124
946D
Timetable
dp
1800
x4520
946C
String Transformation
greedy
,
strings
1300
x8984
946B
Weird Subtraction Process
math
,
number theory
1100
x11018
946A
Partition
greedy
800
x16887
940F
Machine Learning
brute force
,
data structures
2600
x2758
940E
Cashback
data structures
,
dp
,
greedy
,
math
2000
x3936
940D
Alena And The Heater
binary search
,
implementation
1600
x3664
940C
Phone Numbers
constructive algorithms
,
implementation
,
strings
1500
x5976
940B
Our Tanya is Crying Out Loud
dp
,
greedy
1400
x9118
940A
Points on the line
brute force
,
greedy
,
sortings
1200
x8406
939F
Cutlet
data structures
,
dp
2400
x1023
939E
Maximize!
binary search
,
greedy
,
ternary search
,
two pointers
1800
x3188
939D
Love Rescue
dfs and similar
,
dsu
,
graphs
,
greedy
,
strings
1600
x7510
939C
Convenient For Everybody
binary search
,
two pointers
1600
x4679
939B
Hamster Farm
implementation
1000
x10708
939A
Love Triangle
graphs
800
x26255
938G
Shortest Path Queries
bitmasks
,
data structures
,
dsu
,
graphs
2900
x951
938F
Erasing Substrings
bitmasks
,
dp
,
greedy
2700
x519
938E
Max History
combinatorics
,
math
2300
x1366
938D
Buy a Ticket
data structures
,
graphs
,
shortest paths
2000
x5930
938C
Constructing Tests
binary search
,
brute force
,
constructive algorithms
1700
x3377
938B
Run For Your Prize
brute force
,
greedy
1100
x8955
938A
Word Correction
implementation
800
x11599
937B
Vile Grasshoppers
brute force
,
math
,
number theory
1400
x6958
937A
Olympiad
implementation
,
sortings
800
x15419
936E
Iqea
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
shortest paths
,
trees
3400
x204
936D
World of Tank
dp
,
greedy
3000
x335
936C
Lock Puzzle
constructive algorithms
,
implementation
,
strings
2300
x1193
936B
Sleepy Game
dfs and similar
,
dp
,
games
,
graphs
2100
x3289
936A
Save Energy!
binary search
,
implementation
,
math
1700
x4377
935F
Fafa and Array
data structures
,
greedy
2600
x378
935E
Fafa and Ancient Mathematics
dfs and similar
,
dp
,
trees
2300
x903
935D
Fafa and Ancient Alphabet
math
,
probabilities
1900
x2660
935C
Fifa and Fafa
geometry
1600
x4833
935B
Fafa and the Gates
implementation
900
x11792
935A
Fafa and his Company
brute force
,
implementation
800
x44215
934B
A Prosperous Lot
constructive algorithms
,
implementation
1200
x8787
934A
A Compatible Pair
brute force
,
games
1400
x7113
933E
A Preponderant Reunion
constructive algorithms
,
dp
3200
x244
933D
A Creative Cutout
brute force
,
combinatorics
,
math
2900
x334
933C
A Colourful Prospect
geometry
,
graphs
2700
x596
933B
A Determined Cleanup
math
2000
x1960
933A
A Twisty Movement
dp
1800
x5049
932G
Palindrome Partition
dp
,
string suffix structures
,
strings
2900
x1002
932F
Escape Through Leaf
data structures
,
dp
,
geometry
2700
x3127
932E
Team Work
combinatorics
,
dp
,
math
2400
x2968
932D
Tree
binary search
,
dp
,
trees
2200
x1795
932C
Permutation Cycle
brute force
,
constructive algorithms
1600
x4073
932B
Recursive Queries
binary search
,
data structures
,
dfs and similar
1300
x8312
932A
Palindromic Supersequence
constructive algorithms
800
x10395
931C
Laboratory Work
implementation
,
math
1700
x3398
931B
World Cup
constructive algorithms
,
implementation
1200
x7199
931A
Friends Meeting
brute force
,
greedy
,
implementation
,
math
800
x12392
930E
Coins Exhibition
data structures
,
dp
,
math
2900
x453
930D
Game with Tokens
data structures
,
games
,
implementation
2500
x422
930C
Teodor is not a liar!
data structures
,
dp
1900
x2158
930B
Game with String
implementation
,
probabilities
,
strings
1600
x2728
930A
Peculiar apple-tree
dfs and similar
,
graphs
,
trees
1500
x7512
929D
Пограничные врата
2400
x155
929C
Красивая команда
*special problem
,
combinatorics
,
math
1700
x1163
929B
Места в самолёте
*special problem
,
implementation
1300
x2051
929A
Прокат велосипедов
*special problem
,
greedy
,
implementation
1400
x2511
928D
Autocompletion
*special problem
,
strings
,
trees
1900
x818
928C
Dependency management
*special problem
,
graphs
,
implementation
1900
x891
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