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Rayan
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Before contest
Codeforces Round 1006 (Div. 3)
38:31:28
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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
436E
Cardboard Box
data structures
,
greedy
2600
x1447
436D
Pudding Monsters
dp
2800
x330
436C
Dungeons and Candies
dsu
,
graphs
,
greedy
,
trees
1800
x2693
436B
Om Nom and Spiders
implementation
,
math
1400
x3073
436A
Feed with Candy
greedy
1500
x3548
435E
Special Graph
2500
x249
435D
Special Grid
brute force
,
dp
,
greedy
2000
x764
435C
Cardiogram
implementation
1600
x2591
435B
Pasha Maximizes
greedy
1400
x7125
435A
Queue on Bus Stop
implementation
1000
x10318
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x305
434D
Nanami's Power Plant
flows
2900
x480
433E
Tachibana Kanade's Tofu
dp
2500
x494
433D
Nanami's Digital Board
dsu
,
implementation
2000
x1249
433C
Ryouko's Memory Note
implementation
,
math
,
sortings
1800
x2511
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x42502
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x16735
432E
Square Tiling
constructive algorithms
,
greedy
2300
x725
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x9663
432C
Prime Swaps
greedy
,
sortings
1800
x2559
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11808
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x62506
431E
Chemistry Experiment
binary search
,
data structures
,
ternary search
2200
x1052
431D
Random Task
binary search
,
bitmasks
,
combinatorics
,
dp
,
math
2100
x2455
431C
k-Tree
dp
,
implementation
,
trees
1600
x26496
431B
Shower Line
brute force
,
implementation
1200
x11010
431A
Black Square
implementation
800
x57630
430B
Balls Game
brute force
,
two pointers
1400
x3781
430A
Points and Segments (easy)
constructive algorithms
,
sortings
1600
x2302
429E
Points and Segments
graphs
3000
x912
429D
Tricky Function
data structures
,
divide and conquer
,
geometry
2200
x2977
429C
Guess the Tree
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
trees
2300
x968
429B
Working out
dp
1600
x9035
429A
Xor-tree
dfs and similar
,
trees
1300
x10601
427E
Police Patrol
greedy
,
implementation
,
math
,
ternary search
2000
x1462
427D
Match & Catch
dp
,
string suffix structures
,
strings
2200
x2244
427C
Checkposts
dfs and similar
,
graphs
,
two pointers
1700
x14615
427B
Prison Transfer
data structures
,
implementation
1100
x14264
427A
Police Recruits
implementation
800
x82711
426B
Sereja and Mirroring
implementation
1300
x3831
426A
Sereja and Mugs
implementation
800
x9342
425E
Sereja and Sets
dp
2500
x700
425D
Sereja and Squares
binary search
,
data structures
,
hashing
2300
x1489
425C
Sereja and Two Sequences
data structures
,
dp
2300
x917
425B
Sereja and Table
bitmasks
,
greedy
2200
x1330
425A
Sereja and Swaps
brute force
,
sortings
1500
x3939
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x138
424D
Biathlon Track
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
2300
x570
424C
Magic Formulas
math
1600
x5571
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7866
424A
Squats
implementation
900
x8623
421D
Bug in Code
binary search
,
data structures
,
sortings
1900
x554
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x6345
420E
Playing the ball
geometry
2600
x226
420D
Cup Trick
data structures
2200
x878
420C
Bug in Code
data structures
,
graphs
,
implementation
,
two pointers
1900
x1277
420B
Online Meeting
implementation
1800
x1050
420A
Start Up
implementation
1000
x6397
418E
Tricky Password
data structures
3100
x330
418D
Big Problems for Organizers
data structures
,
graphs
,
trees
2800
x491
417E
Square Table
constructive algorithms
,
math
,
probabilities
2400
x859
417D
Cunning Gena
bitmasks
,
dp
,
greedy
,
sortings
1900
x2584
417C
Football
constructive algorithms
,
graphs
,
implementation
1400
x4737
417B
Crash
implementation
1400
x1866
417A
Elimination
dp
,
implementation
,
math
1500
x3097
416E
President's Path
dp
,
graphs
,
shortest paths
2500
x1579
416D
Population Size
greedy
,
implementation
,
math
2400
x977
416C
Booking System
binary search
,
dp
,
greedy
,
implementation
1600
x8157
416B
Art Union
brute force
,
dp
,
implementation
1300
x8848
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x9099
415B
Mashmokh and Tokens
binary search
,
greedy
,
implementation
,
math
1500
x6388
415A
Mashmokh and Lights
implementation
900
x9120
414E
Mashmokh's Designed Problem
data structures
3200
x201
414D
Mashmokh and Water Tanks
binary search
,
data structures
,
greedy
,
trees
,
two pointers
2300
x695
414C
Mashmokh and Reverse Operation
combinatorics
,
divide and conquer
2100
x2253
414B
Mashmokh and ACM
combinatorics
,
dp
,
number theory
1400
x23620
414A
Mashmokh and Numbers
constructive algorithms
,
number theory
1500
x9918
413E
Maze 2D
data structures
,
divide and conquer
2200
x759
413D
2048
bitmasks
,
dp
2000
x843
413C
Jeopardy!
greedy
,
math
1400
x2409
413B
Spyke Chatting
implementation
1300
x1736
413A
Data Recovery
implementation
1200
x2705
412E
E-mail Addresses
implementation
1900
x853
412D
Giving Awards
dfs and similar
2000
x2114
412C
Pattern
implementation
,
strings
1200
x3989
412B
Network Configuration
greedy
,
sortings
900
x5679
412A
Poster
greedy
,
implementation
900
x4556
411C
Kicker
*special problem
,
implementation
1700
x1234
411B
Multi-core Processor
implementation
1600
x1291
411A
Password Check
*special problem
,
implementation
800
x7409
409I
Feed the Golorp
*special problem
2400
x129
409H
A + B Strikes Back
*special problem
,
brute force
,
constructive algorithms
,
dsu
,
implementation
1500
x9090
409G
On a plane
*special problem
,
geometry
2200
x525
409F
000001
*special problem
1900
x2106
409E
Dome
*special problem
1800
x583
409D
Big Data
*special problem
1700
x1729
409C
Magnum Opus
*special problem
1700
x1996
409B
Mysterious Language
*special problem
1700
x1376
409A
The Great Game
*special problem
1700
x2482
408B
Garland
implementation
1200
x9533
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