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Problems
#
Name
331C2
The Great Julya Calendar
dp
2400
x366
331C1
The Great Julya Calendar
dp
1100
x5946
331B2
Shave Beaver!
data structures
1900
x673
331B1
Shave Beaver!
implementation
1700
x718
331A2
Oh Sweet Beaverette
data structures
,
sortings
1500
x1386
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1340
330B
Road Construction
constructive algorithms
,
graphs
1300
x16409
330A
Cakeminator
brute force
,
implementation
800
x27568
329E
Evil
math
3100
x166
329D
The Evil Temple and the Moving Rocks
constructive algorithms
2500
x388
329C
Graph Reconstruction
constructive algorithms
2400
x880
329B
Biridian Forest
dfs and similar
,
shortest paths
1500
x6150
329A
Purification
constructive algorithms
,
greedy
1500
x4599
328B
Sheldon and Ice Pieces
greedy
1500
x1265
328A
IQ Test
implementation
1800
x1960
327E
Axis Walking
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
meet-in-the-middle
2300
x1358
327D
Block Tower
constructive algorithms
,
dfs and similar
,
graphs
1900
x2226
327C
Magic Five
combinatorics
,
math
1700
x3127
327B
Hungry Sequence
math
1200
x19094
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x40271
325E
The Red Button
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
greedy
2800
x754
325D
Reclamation
dsu
2900
x488
325C
Monsters and Diamonds
dfs and similar
,
graphs
,
shortest paths
2600
x333
325B
Stadium and Games
binary search
,
math
1800
x1474
325A
Square and Rectangles
implementation
1500
x2138
323C
Two permutations
data structures
2400
x572
323B
Tournament-graph
constructive algorithms
,
graphs
2200
x366
323A
Black-and-White Cube
combinatorics
,
constructive algorithms
1600
x723
322B
Ciel and Flowers
combinatorics
,
math
1600
x11538
322A
Ciel and Dancing
greedy
1000
x8100
321E
Ciel and Gondolas
data structures
,
divide and conquer
,
dp
2600
x4674
321D
Ciel and Flipboard
dp
,
greedy
,
math
2900
x528
321C
Ciel the Commander
constructive algorithms
,
dfs and similar
,
divide and conquer
,
greedy
,
trees
2100
x6849
321B
Ciel and Duel
dp
,
flows
,
greedy
1900
x2973
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3556
320B
Ping-Pong (Easy Version)
dfs and similar
,
graphs
1500
x7107
320A
Magic Numbers
brute force
,
greedy
900
x33969
319E
Ping-Pong
data structures
3000
x634
319D
Have You Ever Heard About the Word?
greedy
,
hashing
,
string suffix structures
,
strings
2800
x616
319C
Kalila and Dimna in the Logging Industry
dp
,
geometry
2100
x4773
319B
Psychos in a Line
data structures
,
implementation
1900
x4038
319A
Malek Dance Club
combinatorics
,
math
1600
x2765
318B
Strings of Power
implementation
,
strings
,
two pointers
1300
x7395
318A
Even Odds
math
900
x107260
317E
Princess and Her Shadow
constructive algorithms
,
shortest paths
3100
x153
317D
Game with Powers
dp
,
games
2300
x976
317C
Balance
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2500
x491
317B
Ants
brute force
,
implementation
2000
x1550
317A
Perfect Pair
brute force
1600
x4539
316G3
Good Substrings
string suffix structures
2400
x489
316G2
Good Substrings
string suffix structures
2200
x467
316G1
Good Substrings
hashing
,
strings
1700
x931
316F3
Suns and Rays
constructive algorithms
,
dfs and similar
,
implementation
2200
x164
316F2
Suns and Rays
2300
x150
316F1
Suns and Rays
dfs and similar
,
implementation
2200
x165
316E3
Summer Homework
data structures
,
math
2300
x506
316E2
Summer Homework
data structures
,
math
2300
x381
316E1
Summer Homework
brute force
,
data structures
1500
x1448
316D3
PE Lesson
dp
,
math
2400
x550
316D2
PE Lesson
dp
2300
x434
316D1
PE Lesson
brute force
,
dp
2300
x493
316C2
Tidying Up
flows
,
graph matchings
2300
x618
316C1
Tidying Up
flows
2200
x547
316B2
EKG
dfs and similar
,
dp
1600
x1570
316B1
EKG
brute force
,
dfs and similar
1500
x1362
316A2
Special Task
math
1400
x2104
316A1
Special Task
greedy
1100
x2598
315B
Sereja and Array
implementation
1200
x6862
315A
Sereja and Bottles
brute force
1400
x10756
314E
Sereja and Squares
dp
2900
x365
314D
Sereja and Straight Lines
binary search
,
data structures
,
geometry
,
sortings
,
two pointers
2500
x517
314C
Sereja and Subsequences
data structures
,
dp
2000
x1809
314B
Sereja and Periods
binary search
,
dfs and similar
,
strings
2000
x1455
314A
Sereja and Contest
implementation
1600
x2061
313E
Ilya and Two Numbers
constructive algorithms
,
data structures
,
dsu
,
greedy
2300
x542
313D
Ilya and Roads
dp
2100
x1429
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5535
313B
Ilya and Queries
dp
,
implementation
1100
x41770
313A
Ilya and Bank Account
implementation
,
number theory
900
x53956
312B
Archer
math
,
probabilities
1300
x11129
312A
Whose sentence is it?
implementation
,
strings
1100
x4878
311E
Biologist
flows
2300
x1060
311D
Interval Cubing
data structures
,
math
2600
x660
311C
Fetch the Treasure
brute force
,
data structures
,
graphs
,
shortest paths
2500
x477
311B
Cats Transport
data structures
,
dp
2400
x3248
311A
The Closest Pair
constructive algorithms
,
implementation
1300
x4001
309E
Sheep
binary search
,
greedy
2900
x219
309D
Tennis Rackets
brute force
,
geometry
2700
x173
309C
Memory for Arrays
binary search
,
bitmasks
,
greedy
1900
x1294
309B
Context Advertising
dp
,
two pointers
2100
x500
309A
Morning run
binary search
,
math
,
two pointers
2000
x460
306D
Polygon
constructive algorithms
,
geometry
2300
x263
306C
White, Black and White Again
combinatorics
,
number theory
2100
x460
306B
Optimizer
data structures
,
greedy
,
sortings
2100
x438
306A
Candies
implementation
800
x6608
305E
Playing with String
games
2300
x605
305D
Olya and Graph
combinatorics
,
math
2200
x454
305C
Ivan and Powers of Two
greedy
,
implementation
1600
x2423
305B
Continued Fractions
brute force
,
implementation
,
math
1700
x2036
305A
Strange Addition
brute force
,
constructive algorithms
,
implementation
1600
x4647
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binary search
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data structures
dfs and similar
divide and conquer
dp
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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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