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Problems
#
Name
388C
Fox and Card Game
games
,
greedy
,
sortings
2000
x3081
388B
Fox and Minimal path
bitmasks
,
constructive algorithms
,
graphs
,
implementation
,
math
1900
x2432
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11337
387E
George and Cards
binary search
,
data structures
2200
x845
387D
George and Interesting Graph
graph matchings
2200
x956
387C
George and Number
greedy
,
implementation
1700
x2157
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x11910
387A
George and Sleep
implementation
900
x9512
386D
Game with Points
dp
,
graphs
,
implementation
,
shortest paths
2100
x411
386C
Diverse Substrings
dp
,
strings
,
two pointers
2000
x743
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2086
386A
Second-Price Auction
implementation
800
x5915
385E
Bear in the Field
math
,
matrices
2300
x559
385D
Bear and Floodlight
bitmasks
,
dp
,
geometry
2200
x794
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9378
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9526
385A
Bear and Raspberry
brute force
,
greedy
,
implementation
1000
x16217
384B
Multitasking
greedy
,
implementation
,
sortings
,
two pointers
1500
x3484
384A
Coder
implementation
800
x15882
383E
Vowels
combinatorics
,
divide and conquer
,
dp
2700
x2730
383D
Antimatter
dp
2300
x2891
383C
Propagating tree
data structures
,
dfs and similar
,
trees
2000
x6095
383B
Volcanoes
binary search
,
implementation
,
sortings
,
two pointers
2500
x653
383A
Milking cows
data structures
,
greedy
1600
x5202
382E
Ksenia and Combinatorics
combinatorics
,
dp
2600
x366
382D
Ksenia and Pawns
dfs and similar
,
graphs
,
implementation
,
trees
2200
x650
382C
Arithmetic Progression
implementation
,
sortings
1700
x8156
382B
Number Busters
binary search
,
math
2000
x1383
382A
Ksenia and Pan Scales
greedy
,
implementation
1100
x11762
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6581
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60296
380E
Sereja and Dividing
data structures
2600
x294
380D
Sereja and Cinema
combinatorics
,
math
2500
x411
380C
Sereja and Brackets
data structures
,
schedules
2000
x13566
380B
Sereja and Tree
graphs
,
implementation
2400
x530
380A
Sereja and Prefixes
binary search
,
brute force
1600
x2652
379G
New Year Cactus
dp
3100
x139
379F
New Year Tree
data structures
,
divide and conquer
,
trees
2400
x2114
379E
New Year Tree Decorations
geometry
,
schedules
,
sortings
2500
x337
379D
New Year Letter
bitmasks
,
brute force
,
dp
2000
x1483
379C
New Year Ratings Change
greedy
,
sortings
1400
x6493
379B
New Year Present
constructive algorithms
,
implementation
1200
x7160
379A
New Year Candles
implementation
1000
x44442
378B
Semifinals
implementation
,
sortings
1300
x5101
378A
Playing with Dice
brute force
800
x23100
377E
Cookie Clicker
dp
,
geometry
2800
x443
377D
Developing Game
data structures
2400
x1081
377C
Captains Mode
bitmasks
,
dp
,
games
2200
x1106
377B
Preparing for the Contest
binary search
,
data structures
,
greedy
,
sortings
1900
x1974
377A
Maze
dfs and similar
1600
x21342
376B
I.O.U.
implementation
1300
x6094
376A
Lever
implementation
,
math
900
x9027
375E
Red and Black Tree
dp
,
implementation
,
math
3000
x397
375D
Tree and Queries
data structures
,
dfs and similar
,
trees
2400
x6196
375C
Circling Round Treasures
bitmasks
,
shortest paths
2600
x473
375B
Maximum Submatrix 2
data structures
,
dp
,
implementation
,
sortings
1600
x4954
375A
Divisible by Seven
math
,
number theory
1600
x4656
374E
Inna and Babies
binary search
,
data structures
,
dsu
,
geometry
,
implementation
2600
x178
374D
Inna and Sequence
binary search
,
data structures
,
dp
,
trees
2000
x844
374C
Inna and Dima
dfs and similar
,
dp
,
graphs
,
implementation
1900
x2652
374B
Inna and Nine
combinatorics
,
greedy
1500
x3231
374A
Inna and Pink Pony
greedy
,
implementation
2000
x2841
373B
Making Sequences is Fun
binary search
,
implementation
,
math
1600
x2434
373A
Collecting Beats is Fun
implementation
900
x10173
372E
Drawing Circles is Fun
combinatorics
,
geometry
3000
x169
372D
Choosing Subtree is Fun
binary search
,
data structures
,
dfs and similar
,
trees
,
two pointers
2600
x908
372C
Watching Fireworks is Fun
data structures
,
dp
,
math
2100
x3629
372B
Counting Rectangles is Fun
brute force
,
divide and conquer
,
dp
1900
x2518
372A
Counting Kangaroos is Fun
binary search
,
greedy
,
sortings
,
two pointers
1600
x12350
371E
Subway Innovation
greedy
,
math
,
two pointers
2000
x1205
371D
Vessels
data structures
,
dsu
,
implementation
,
trees
1800
x5312
371C
Hamburgers
binary search
,
brute force
1600
x23576
371B
Fox Dividing Cheese
math
,
number theory
1300
x10901
371A
K-Periodic Array
greedy
,
implementation
,
math
1000
x5941
370E
Summer Reading
dp
,
greedy
2500
x230
370D
Broken Monitor
brute force
,
constructive algorithms
,
greedy
,
implementation
2100
x611
370C
Mittens
constructive algorithms
,
greedy
,
sortings
1800
x1501
370B
Berland Bingo
implementation
1300
x2471
370A
Rook, Bishop and King
graphs
,
math
,
shortest paths
1100
x9865
369E
Valera and Queries
binary search
,
data structures
2200
x2030
369D
Valera and Fools
dfs and similar
,
dp
,
graphs
,
shortest paths
2200
x1087
369C
Valera and Elections
dfs and similar
,
graphs
,
trees
1600
x9398
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6289
369A
Valera and Plates
greedy
,
implementation
900
x10710
368B
Sereja and Suffixes
data structures
,
dp
1100
x39496
368A
Sereja and Coat Rack
implementation
1000
x7359
367E
Sereja and Intervals
combinatorics
,
dp
2700
x1068
367D
Sereja and Sets
bitmasks
,
dfs and similar
2400
x617
367C
Sereja and the Arrangement of Numbers
graphs
,
greedy
,
sortings
2000
x1701
367B
Sereja ans Anagrams
binary search
,
data structures
1900
x2407
367A
Sereja and Algorithm
data structures
,
implementation
1500
x4283
366E
Dima and Magic Guitar
brute force
,
implementation
,
math
2200
x743
366D
Dima and Trap Graph
binary search
,
data structures
,
dfs and similar
,
dsu
,
shortest paths
,
two pointers
2000
x1270
366C
Dima and Salad
dp
1900
x4535
366B
Dima and To-do List
brute force
,
implementation
1200
x6717
366A
Dima and Guards
implementation
1100
x4480
365B
The Fibonacci Segment
implementation
1100
x14020
365A
Good Number
implementation
1100
x17416
364E
Empty Rectangles
divide and conquer
,
two pointers
3000
x533
364D
Ghd
brute force
,
math
,
probabilities
2900
x1958
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dp
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graphs
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