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Pinely Round 4 (Div. 1 + Div. 2)
09:58:19
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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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Status
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Custom test
Problems
#
Name
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6381
367B
Sereja ans Anagrams
binary search
,
data structures
1900
x2441
367A
Sereja and Algorithm
data structures
,
implementation
1500
x4302
366C
Dima and Salad
dp
1900
x4682
364A
Matrix
combinatorics
,
data structures
,
implementation
1600
x4637
363D
Renting Bikes
binary search
,
greedy
1800
x3794
363C
Fixing Typos
greedy
,
implementation
1400
x13194
362C
Insertion Sort
data structures
,
dp
,
implementation
,
math
1900
x1705
362A
Two Semiknights Meet
greedy
,
math
1500
x2647
360A
Levko and Array Recovery
greedy
,
implementation
1700
x2041
359C
Prime Number
math
,
number theory
1900
x2993
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
356B
Xenia and Hamming
implementation
,
math
1900
x1914
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
353B
Two Heaps
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
1900
x2268
352B
Jeff and Periods
implementation
,
sortings
1300
x16146
351B
Jeff and Furik
combinatorics
,
dp
,
probabilities
1900
x2345
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
347A
Difference Row
constructive algorithms
,
implementation
,
sortings
1300
x8876
346A
Alice and Bob
games
,
math
,
number theory
1600
x8595
345A
Expecting Trouble
*special problem
,
probabilities
1500
x480
343C
Read Time
binary search
,
greedy
,
two pointers
1900
x2980
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x13432
343A
Rational Resistance
math
,
number theory
1600
x8638
342C
Cupboard and Balloons
geometry
1900
x1828
342B
Xenia and Spies
brute force
,
greedy
,
implementation
1500
x4001
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7103
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
336B
Vasily the Bear and Fly
math
1900
x1208
335B
Palindrome
constructive algorithms
,
dp
1900
x2043
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2538
334B
Eight Point Sets
sortings
1400
x3565
333B
Chips
greedy
1800
x2613
333A
Secrets
greedy
1600
x3956
332B
Maximum Absurdity
data structures
,
dp
,
implementation
1500
x7894
332A
Down the Hatch!
implementation
1300
x3546
331B2
Shave Beaver!
data structures
1900
x715
331B1
Shave Beaver!
implementation
1700
x733
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1397
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1352
330B
Road Construction
constructive algorithms
,
graphs
1300
x16602
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
327D
Block Tower
constructive algorithms
,
dfs and similar
,
graphs
1900
x2255
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
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x3028
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3589
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7150
319B
Psychos in a Line
data structures
,
implementation
1900
x4086
319A
Malek Dance Club
combinatorics
,
math
1600
x2777
318B
Strings of Power
implementation
,
strings
,
two pointers
1300
x7450
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
312B
Archer
math
,
probabilities
1300
x11317
311A
The Closest Pair
constructive algorithms
,
implementation
1300
x4014
309C
Memory for Arrays
binary search
,
bitmasks
,
greedy
1900
x1300
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
304B
Calendar
brute force
,
implementation
1300
x2954
303B
Rectangle Puzzle II
implementation
,
math
1700
x1336
303A
Lucky Permutation Triple
constructive algorithms
,
implementation
,
math
1300
x7809
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
298A
Snow Footprints
greedy
,
implementation
1300
x10724
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
294C
Shaass and Lights
combinatorics
,
number theory
1900
x3759
294B
Shaass and Bookshelf
dp
,
greedy
1700
x4461
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