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Pinely Round 4 (Div. 1 + Div. 2)
14:02:11
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Difficulty:
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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
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Custom test
Problems
#
Name
198B
Jumping on Walls
shortest paths
1400
x4182
198A
About Bacteria
implementation
,
math
1700
x3127
197B
Limit
math
1400
x4608
197A
Plate Game
constructive algorithms
,
games
,
math
1600
x6205
195C
Try and Catch
expression parsing
,
implementation
1800
x1130
193A
Cutting Figure
constructive algorithms
,
graphs
,
trees
1700
x3899
191B
Demonstration
greedy
1700
x1003
191A
Dynasty Puzzles
dp
1500
x3883
190C
STL
dfs and similar
1500
x2764
190B
Surrounded
geometry
1800
x2806
188H
Stack
*special problem
,
expression parsing
,
implementation
1800
x249
188G
Array Sorting
*special problem
,
implementation
1600
x331
188F
Binary Notation
*special problem
,
implementation
1400
x295
188E
HQ9+
*special problem
,
implementation
1400
x496
188C
LCM
*special problem
,
implementation
,
math
1400
x446
187B
AlgoRace
dp
,
shortest paths
1800
x1948
187A
Permutations
greedy
1500
x2737
185B
Mushroom Scientists
math
,
ternary search
1800
x1614
183B
Zoo
brute force
,
geometry
1700
x685
183A
Headquarters
constructive algorithms
,
math
1700
x537
182E
Wooden Fence
dp
1800
x1442
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7934
180E
Cubes
binary search
,
dp
,
two pointers
1800
x1743
180C
Letter
dp
1400
x7213
180A
Defragmentation
implementation
1800
x528
178F1
Representative Sampling
1800
x378
178D1
Magic Squares
1500
x623
178C1
Smart Beaver and Resolving Collisions
1600
x475
178B3
Greedy Merchants
1800
x1151
178B2
Greedy Merchants
1600
x659
178B1
Greedy Merchants
1600
x743
177F1
Script Generation
1800
x298
177E1
Space Voyage
binary search
1700
x591
177D2
Encrypting Messages
data structures
1500
x1872
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x2495
177C1
Party
dfs and similar
,
dsu
,
graphs
1500
x2509
176B
Word Cut
dp
1700
x1742
175C
Geometry Horse
greedy
,
implementation
,
sortings
,
two pointers
1600
x1303
175B
Plane of Tanks: Pro
implementation
1400
x1391
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2365
174C
Range Increments
data structures
,
greedy
1800
x1078
174B
File List
dp
,
greedy
,
implementation
1400
x2214
173B
Chamber of Secrets
dfs and similar
,
shortest paths
1800
x2972
172D
Calendar Reform
*special problem
,
number theory
1500
x1388
172C
Bus
*special problem
,
implementation
,
sortings
1500
x1132
171H
A polyline
*special problem
,
implementation
1700
x273
171G
Mysterious numbers - 2
*special problem
1600
x911
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1262
168B
Wizards and Minimal Spell
implementation
,
strings
1700
x1210
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2122
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2019
166E
Tetrahedron
dp
,
math
,
matrices
1500
x20472
166C
Median
greedy
,
math
,
sortings
1500
x6403
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x12058
165B
Burning Midnight Oil
binary search
,
implementation
1500
x17164
164A
Variable, or There and Back Again
dfs and similar
,
graphs
1700
x992
163A
Substring and Subsequence
dp
1700
x2647
162J
Brackets
*special problem
1800
x94
162H
Alternating case
*special problem
1800
x218
162F
Factorial zeros
*special problem
1800
x201
162E
HQ9+
*special problem
1800
x177
162C
Prime factorization
*special problem
1800
x781
162B
Binary notation
*special problem
1800
x313
161D
Distance in Tree
dfs and similar
,
dp
,
trees
1800
x14237
161B
Discounts
constructive algorithms
,
greedy
,
sortings
1700
x1944
160C
Find Pair
implementation
,
math
,
sortings
1700
x3419
159E
Zebra Tower
*special problem
,
data structures
,
greedy
,
sortings
1700
x996
159D
Palindrome pairs
*special problem
,
brute force
,
dp
,
strings
1500
x4292
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2957
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2468
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x9035
156B
Suspects
constructive algorithms
,
data structures
,
implementation
1600
x2208
156A
Message
brute force
1700
x3022
154B
Colliders
math
,
number theory
1600
x4415
154A
Hometask
greedy
1600
x4014
153B
Binary notation
*special problem
1800
x156
153A
A + B
*special problem
1600
x768
152C
Pocket Book
combinatorics
1400
x10459
150B
Quantity of Strings
combinatorics
,
dfs and similar
,
graphs
,
math
1600
x4052
150A
Win or Freeze
games
,
math
,
number theory
1400
x7672
149C
Division into Teams
greedy
,
math
,
sortings
1500
x5326
149B
Martian Clock
implementation
1600
x2237
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6991
148C
Terse princess
constructive algorithms
,
greedy
1700
x3082
148B
Escape
implementation
,
math
1500
x5373
145B
Lucky Number 2
constructive algorithms
1800
x2173
144C
Anagram Search
implementation
,
strings
1500
x3935
142B
Help General
constructive algorithms
,
greedy
,
implementation
1800
x2190
142A
Help Farmer
brute force
,
math
1600
x2591
141C
Queue
constructive algorithms
,
greedy
,
sortings
1800
x2412
141B
Hopscotch
geometry
,
math
1400
x5256
140D
New Year Contest
greedy
,
sortings
1800
x2198
140C
New Year Snowmen
binary search
,
data structures
,
greedy
1800
x4303
140B
New Year Cards
brute force
,
greedy
,
implementation
1800
x1669
140A
New Year Table
geometry
,
math
1700
x4116
139B
Wallpaper
implementation
,
math
1600
x1289
138A
Literature Lesson
implementation
1600
x2367
137C
History
sortings
1500
x7135
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2322
132C
Logo Turtle
dp
1800
x2293
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