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Pinely Round 4 (Div. 1 + Div. 2)
12:19:29
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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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Status
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Custom test
Problems
#
Name
377A
Maze
dfs and similar
1600
x21922
375B
Maximum Submatrix 2
data structures
,
dp
,
implementation
,
sortings
1600
x5016
375A
Divisible by Seven
math
,
number theory
1600
x4761
374B
Inna and Nine
combinatorics
,
greedy
1500
x3265
373B
Making Sequences is Fun
binary search
,
implementation
,
math
1600
x2455
372A
Counting Kangaroos is Fun
binary search
,
greedy
,
sortings
,
two pointers
1600
x12601
371D
Vessels
data structures
,
dsu
,
implementation
,
trees
1800
x5466
371C
Hamburgers
binary search
,
brute force
1600
x24961
370C
Mittens
constructive algorithms
,
greedy
,
sortings
1800
x1552
369C
Valera and Elections
dfs and similar
,
graphs
,
trees
1600
x9645
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6381
367A
Sereja and Algorithm
data structures
,
implementation
1500
x4302
364A
Matrix
combinatorics
,
data structures
,
implementation
1600
x4637
363D
Renting Bikes
binary search
,
greedy
1800
x3794
363C
Fixing Typos
greedy
,
implementation
1400
x13194
362A
Two Semiknights Meet
greedy
,
math
1500
x2647
360A
Levko and Array Recovery
greedy
,
implementation
1700
x2041
359B
Permutation
constructive algorithms
,
dp
,
math
1400
x7851
358D
Dima and Hares
dp
,
greedy
1800
x3976
358B
Dima and Text Messages
brute force
,
strings
1500
x3701
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7661
357B
Flag Day
constructive algorithms
,
implementation
1400
x8108
356A
Knight Tournament
data structures
,
dsu
1500
x13199
354A
Vasya and Robot
brute force
,
greedy
,
math
1500
x5453
353C
Find Maximum
implementation
,
math
,
number theory
1600
x4780
351A
Jeff and Rounding
dp
,
greedy
,
implementation
,
math
1800
x2909
350C
Bombs
greedy
,
implementation
,
sortings
1600
x6501
350B
Resort
graphs
1500
x3102
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13778
348A
Mafia
binary search
,
math
,
sortings
1600
x12839
346A
Alice and Bob
games
,
math
,
number theory
1600
x8595
345A
Expecting Trouble
*special problem
,
probabilities
1500
x480
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x13432
343A
Rational Resistance
math
,
number theory
1600
x8638
342B
Xenia and Spies
brute force
,
greedy
,
implementation
1500
x4001
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7102
340C
Tourist Problem
combinatorics
,
implementation
,
math
1600
x4192
339D
Xenia and Bit Operations
data structures
,
trees
1700
x24696
339C
Xenia and Weights
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x8234
337C
Quiz
binary search
,
greedy
,
math
,
matrices
,
number theory
1600
x4843
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9225
336C
Vasily the Bear and Sequence
brute force
,
greedy
,
implementation
,
number theory
1800
x2434
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2538
334B
Eight Point Sets
sortings
1400
x3565
333B
Chips
greedy
1800
x2612
333A
Secrets
greedy
1600
x3956
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x7894
331B1
Shave Beaver!
implementation
1700
x733
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1397
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1352
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6247
329A
Purification
constructive algorithms
,
greedy
1500
x4615
328B
Sheldon and Ice Pieces
greedy
1500
x1287
328A
IQ Test
implementation
1800
x2012
327C
Magic Five
combinatorics
,
math
1700
x3168
325B
Stadium and Games
binary search
,
math
1800
x1493
325A
Square and Rectangles
implementation
1500
x2141
323A
Black-and-White Cube
combinatorics
,
constructive algorithms
1600
x727
322B
Ciel and Flowers
combinatorics
,
math
1600
x11640
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3589
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7150
319A
Malek Dance Club
combinatorics
,
math
1600
x2777
317A
Perfect Pair
brute force
1600
x4613
316G1
Good Substrings
hashing
,
strings
1700
x940
316E1
Summer Homework
brute force
,
data structures
1500
x1464
316B2
EKG
dfs and similar
,
dp
1600
x1575
316B1
EKG
brute force
,
dfs and similar
1500
x1365
316A2
Special Task
math
1400
x2120
315A
Sereja and Bottles
brute force
1400
x10935
314A
Sereja and Contest
implementation
1600
x2063
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5578
305C
Ivan and Powers of Two
greedy
,
implementation
1600
x2432
305B
Continued Fractions
brute force
,
implementation
,
math
1700
x2048
305A
Strange Addition
brute force
,
constructive algorithms
,
implementation
1600
x4695
303B
Rectangle Puzzle II
implementation
,
math
1700
x1336
301A
Yaroslav and Sequence
constructive algorithms
1800
x3060
300C
Beautiful Numbers
brute force
,
combinatorics
1800
x9143
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x6203
297B
Fish Weight
constructive algorithms
,
greedy
1600
x3465
297A
Parity Game
constructive algorithms
1700
x3604
295B
Greg and Graph
dp
,
graphs
,
shortest paths
1700
x13625
295A
Greg and Array
data structures
,
implementation
1400
x16925
294B
Shaass and Bookshelf
dp
,
greedy
1700
x4461
293A
Weird Game
games
,
greedy
1500
x2853
291D
Parallel Programming
*special problem
,
greedy
1600
x1472
291C
Network Mask
*special problem
,
bitmasks
,
brute force
,
implementation
1600
x1670
290D
Orange
*special problem
,
implementation
1400
x1790
290C
WTF?
*special problem
,
graph matchings
,
implementation
,
trees
1700
x1531
290B
QR code
*special problem
,
implementation
1500
x2417
290A
Mysterious strings
*special problem
,
implementation
1400
x2979
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x17050
288C
Polo the Penguin and XOR operation
implementation
,
math
1700
x2270
288B
Polo the Penguin and Houses
combinatorics
1500
x2893
287B
Pipeline
binary search
,
math
1700
x9309
286A
Lucky Permutation
constructive algorithms
,
math
1400
x3138
284A
Cows and Primitive Roots
implementation
,
math
,
number theory
1400
x6494
283B
Cow Program
dfs and similar
,
dp
,
graphs
1700
x3633
283A
Cows and Sequence
constructive algorithms
,
data structures
,
implementation
1600
x6520
282C
XOR and OR
constructive algorithms
,
implementation
,
math
1500
x9273
282B
Painting Eggs
greedy
,
math
1500
x12759
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