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Custom test
Problems
#
Name
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x24708
438E
The Child and Binary Tree
combinatorics
,
divide and conquer
,
fft
,
number theory
3100
x1746
438D
The Child and Sequence
data structures
,
math
2300
x7698
437E
The Child and Polygon
dp
,
geometry
2500
x686
437D
The Child and Zoo
dsu
,
sortings
1900
x3121
437C
The Child and Toy
graphs
,
greedy
,
sortings
1400
x13417
437B
The Child and Set
bitmasks
,
greedy
,
implementation
,
sortings
1500
x9079
437A
The Child and Homework
implementation
1300
x8850
436F
Banners
brute force
,
data structures
,
dp
3000
x346
436E
Cardboard Box
data structures
,
greedy
2600
x1226
436D
Pudding Monsters
dp
2800
x307
436C
Dungeons and Candies
dsu
,
graphs
,
greedy
,
trees
1800
x2574
436B
Om Nom and Spiders
implementation
,
math
1400
x3037
436A
Feed with Candy
greedy
1500
x3385
435E
Special Graph
2500
x220
435D
Special Grid
brute force
,
dp
,
greedy
2000
x742
435C
Cardiogram
implementation
1600
x2510
435B
Pasha Maximizes
greedy
1400
x6701
435A
Queue on Bus Stop
implementation
1000
x9930
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x252
434D
Nanami's Power Plant
flows
2900
x394
433E
Tachibana Kanade's Tofu
dp
2500
x468
433D
Nanami's Digital Board
dsu
,
implementation
2000
x1034
433C
Ryouko's Memory Note
implementation
,
math
,
sortings
1800
x2392
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x35485
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15486
432E
Square Tiling
constructive algorithms
,
greedy
2300
x652
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x8070
432C
Prime Swaps
greedy
,
sortings
1800
x2422
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11409
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x55947
431E
Chemistry Experiment
binary search
,
data structures
,
ternary search
2200
x889
431D
Random Task
binary search
,
bitmasks
,
combinatorics
,
dp
,
math
2100
x2098
431C
k-Tree
dp
,
implementation
,
trees
1600
x24213
431B
Shower Line
brute force
,
implementation
1200
x10415
431A
Black Square
implementation
800
x50558
430B
Balls Game
brute force
,
two pointers
1400
x3612
430A
Points and Segments (easy)
constructive algorithms
,
sortings
1600
x2211
429E
Points and Segments
graphs
3000
x823
429D
Tricky Function
data structures
,
divide and conquer
,
geometry
2200
x2556
429C
Guess the Tree
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
trees
2300
x896
429B
Working out
dp
1600
x8237
429A
Xor-tree
dfs and similar
,
trees
1300
x9845
427E
Police Patrol
greedy
,
implementation
,
math
,
ternary search
2000
x1389
427D
Match & Catch
dp
,
string suffix structures
,
strings
2200
x2067
427C
Checkposts
dfs and similar
,
graphs
,
two pointers
1700
x12735
427B
Prison Transfer
data structures
,
implementation
1100
x13640
427A
Police Recruits
implementation
800
x71136
426B
Sereja and Mirroring
implementation
1300
x3758
426A
Sereja and Mugs
implementation
800
x8938
425E
Sereja and Sets
dp
2500
x540
425D
Sereja and Squares
binary search
,
data structures
,
hashing
2300
x1379
425C
Sereja and Two Sequences
data structures
,
dp
2300
x880
425B
Sereja and Table
bitmasks
,
greedy
2200
x1279
425A
Sereja and Swaps
brute force
,
sortings
1500
x3799
424E
Colored Jenga
dfs and similar
,
dp
,
probabilities
2500
x121
424D
Biathlon Track
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
2300
x550
424C
Magic Formulas
math
1600
x5156
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7295
424A
Squats
implementation
900
x8135
421D
Bug in Code
binary search
,
data structures
,
sortings
1900
x491
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x5746
420E
Playing the ball
geometry
2600
x212
420D
Cup Trick
data structures
2200
x748
420C
Bug in Code
data structures
,
graphs
,
implementation
,
two pointers
1900
x1184
420B
Online Meeting
implementation
1800
x1005
420A
Start Up
implementation
1000
x5796
418E
Tricky Password
data structures
3100
x286
418D
Big Problems for Organizers
data structures
,
graphs
,
trees
2800
x460
417E
Square Table
constructive algorithms
,
math
,
probabilities
2400
x759
417D
Cunning Gena
bitmasks
,
dp
,
greedy
,
sortings
1900
x2347
417C
Football
constructive algorithms
,
graphs
,
implementation
1400
x4596
417B
Crash
implementation
1400
x1745
417A
Elimination
dp
,
implementation
,
math
1500
x2850
416E
President's Path
dp
,
graphs
,
shortest paths
2500
x1381
416D
Population Size
greedy
,
implementation
,
math
2400
x898
416C
Booking System
binary search
,
dp
,
greedy
,
implementation
1600
x7571
416B
Art Union
brute force
,
dp
,
implementation
1300
x8395
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x8596
415B
Mashmokh and Tokens
binary search
,
greedy
,
implementation
,
math
1500
x6082
415A
Mashmokh and Lights
implementation
900
x8727
414E
Mashmokh's Designed Problem
data structures
3200
x189
414D
Mashmokh and Water Tanks
binary search
,
data structures
,
greedy
,
trees
,
two pointers
2300
x670
414C
Mashmokh and Reverse Operation
combinatorics
,
divide and conquer
2100
x2161
414B
Mashmokh and ACM
combinatorics
,
dp
,
number theory
1400
x20277
414A
Mashmokh and Numbers
constructive algorithms
,
number theory
1500
x9597
413E
Maze 2D
data structures
,
divide and conquer
2200
x660
413D
2048
bitmasks
,
dp
2000
x742
413C
Jeopardy!
greedy
,
math
1400
x2292
413B
Spyke Chatting
implementation
1300
x1666
413A
Data Recovery
implementation
1200
x2523
412E
E-mail Addresses
implementation
1900
x805
412D
Giving Awards
dfs and similar
2000
x1772
412C
Pattern
implementation
,
strings
1200
x3834
412B
Network Configuration
greedy
,
sortings
900
x5240
412A
Poster
greedy
,
implementation
900
x4279
411C
Kicker
implementation
1700
x1023
411B
Multi-core Processor
implementation
1600
x1246
411A
Password Check
*special problem
,
implementation
800
x6884
409I
Feed the Golorp
*special problem
2400
x114
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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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