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#
Name
749C
Voting
greedy
,
implementation
,
two pointers
1500
x5909
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8365
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46397
748F
Santa Clauses and a Soccer Championship
constructive algorithms
,
dfs and similar
,
graphs
,
trees
2300
x633
748E
Santa Claus and Tangerines
binary search
,
data structures
,
greedy
,
two pointers
2100
x1440
748D
Santa Claus and a Palindrome
constructive algorithms
,
data structures
,
greedy
2100
x1810
748C
Santa Claus and Robot
constructive algorithms
,
math
1400
x4539
748B
Santa Claus and Keyboard Check
implementation
,
strings
1500
x5271
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x8644
747F
Igor and Interesting Numbers
brute force
,
combinatorics
,
dp
,
math
2500
x409
747E
Comments
dfs and similar
,
expression parsing
,
implementation
,
strings
1700
x1938
747D
Winter Is Coming
dp
,
greedy
,
sortings
1800
x3007
747C
Servers
implementation
1300
x4468
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8538
747A
Display Size
brute force
,
math
800
x10035
746G
New Roads
constructive algorithms
,
graphs
,
trees
2100
x1309
746F
Music in Car
data structures
,
greedy
,
two pointers
2200
x722
746E
Numbers Exchange
greedy
,
implementation
,
math
1900
x1709
746D
Green and Black Tea
constructive algorithms
,
greedy
,
math
1500
x4980
746C
Tram
constructive algorithms
,
implementation
,
math
1600
x3683
746B
Decoding
implementation
,
strings
900
x26199
746A
Compote
implementation
,
math
800
x20584
745B
Hongcow Solves A Puzzle
implementation
1400
x3702
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10297
744E
Hongcow Masters the Cyclic Shift
strings
,
two pointers
3200
x132
744D
Hongcow Draws a Circle
geometry
3200
x117
744C
Hongcow Buys a Deck of Cards
bitmasks
,
brute force
,
dp
2400
x1010
744B
Hongcow's Game
bitmasks
,
divide and conquer
,
interactive
1900
x1706
744A
Hongcow Builds A Nation
dfs and similar
,
graphs
1500
x7892
743E
Vladik and cards
binary search
,
bitmasks
,
brute force
,
dp
2200
x1470
743D
Chloe and pleasant prizes
dfs and similar
,
dp
,
graphs
,
trees
1800
x4248
743C
Vladik and fractions
brute force
,
constructive algorithms
,
math
,
number theory
1500
x11823
743B
Chloe and the sequence
binary search
,
bitmasks
,
constructive algorithms
,
implementation
1200
x14207
743A
Vladik and flights
constructive algorithms
,
greedy
,
implementation
1200
x10841
742B
Arpa’s obvious problem and Mehrdad’s terrible solution
brute force
,
math
,
number theory
1500
x9025
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x39809
741E
Arpa’s abnormal DNA and Mehrdad’s deep interest
data structures
,
string suffix structures
3400
x174
741D
Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths
data structures
,
dfs and similar
,
trees
2900
x2441
741C
Arpa’s overnight party and Mehrdad’s silent entering
constructive algorithms
,
dfs and similar
,
graphs
2600
x2368
741B
Arpa's weak amphitheater and Mehrdad's valuable Hoses
dfs and similar
,
dp
,
dsu
1600
x5137
741A
Arpa's loud Owf and Mehrdad's evil plan
dfs and similar
,
math
1600
x5394
740B
Alyona and flowers
constructive algorithms
1200
x8116
740A
Alyona and copybooks
brute force
,
implementation
1300
x8810
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2046
739D
Recover a functional graph
graph matchings
3400
x180
739C
Alyona and towers
data structures
2500
x1403
739B
Alyona and a tree
binary search
,
data structures
,
dfs and similar
,
graphs
,
trees
1900
x4421
739A
Alyona and mex
constructive algorithms
,
greedy
1700
x7596
737F
Dirty plates
constructive algorithms
,
math
3300
x69
737E
Tanya is 5!
graph matchings
,
graphs
,
greedy
,
schedules
3300
x119
736E
Chess Championship
constructive algorithms
,
flows
,
greedy
,
math
2900
x182
736D
Permutations
math
,
matrices
2800
x450
735E
Ostap and Tree
dp
,
trees
2500
x842
735D
Taxes
math
,
number theory
1600
x12634
735C
Tennis Championship
combinatorics
,
constructive algorithms
,
greedy
,
math
1600
x7335
735B
Urbanization
greedy
,
number theory
,
sortings
1100
x8301
735A
Ostap and Grasshopper
implementation
,
strings
800
x12295
734F
Anton and School
bitmasks
,
constructive algorithms
,
implementation
,
math
2500
x1279
734E
Anton and Tree
dfs and similar
,
dp
,
trees
2100
x3732
734D
Anton and Chess
implementation
1700
x3682
734C
Anton and Making Potions
binary search
,
dp
,
greedy
,
two pointers
1600
x5285
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28506
734A
Anton and Danik
implementation
,
strings
800
x139991
733F
Drivers Dissatisfaction
data structures
,
dsu
,
graphs
,
trees
2200
x1088
733E
Sleep in Class
constructive algorithms
,
data structures
,
math
,
two pointers
2400
x861
733D
Kostya the Sculptor
data structures
,
hashing
1600
x4135
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3296
733B
Parade
math
1100
x10588
733A
Grasshopper And the String
implementation
1000
x15924
732F
Tourist Reform
dfs and similar
,
graphs
2300
x2237
732E
Sockets
greedy
,
sortings
2100
x1576
732D
Exams
binary search
,
greedy
,
sortings
1700
x5402
732C
Sanatorium
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x9469
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24021
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x67179
731F
Video Cards
brute force
,
data structures
,
implementation
,
math
,
number theory
1900
x2750
731E
Funny Game
dp
,
games
2200
x1377
731D
80-th Level Archeology
brute force
,
data structures
,
greedy
,
sortings
2200
x1147
731C
Socks
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x6784
731B
Coupons and Discounts
constructive algorithms
,
greedy
1100
x7858
731A
Night at the Museum
implementation
,
strings
800
x43087
730L
Expression Queries
data structures
3200
x84
730K
Roads Orientation Problem
graphs
3200
x93
730J
Bottles
dp
1900
x3147
730I
Olympiad in Programming and Sports
dp
,
flows
,
graphs
,
greedy
2000
x1942
730H
Delete Them
constructive algorithms
,
implementation
1300
x2918
730G
Car Repair Shop
implementation
1600
x2100
730F
Ber Patio
3100
x87
730E
Award Ceremony
greedy
,
implementation
2200
x708
730D
Running Over The Bridges
greedy
,
implementation
,
math
2200
x679
730C
Bulmart
binary search
,
dfs and similar
2100
x1004
730B
Minimum and Maximum
constructive algorithms
,
interactive
1800
x2375
730A
Toda 2
greedy
,
implementation
1800
x1550
729F
Financiers Game
dp
2500
x933
729E
Subordinates
constructive algorithms
,
data structures
,
graphs
,
greedy
,
sortings
1900
x2144
729D
Sea Battle
constructive algorithms
,
greedy
,
math
1700
x3622
729C
Road to Cinema
binary search
,
greedy
,
sortings
1700
x3846
729B
Spotlights
dp
,
implementation
1200
x7723
729A
Interview with Oleg
implementation
,
strings
900
x7266
727F
Polycarp's problems
binary search
,
dp
,
greedy
2300
x762
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