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Problems
#
Name
194A
Exams
implementation
,
math
900
x9661
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x323
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x498
190A
Vasya and the Bus
greedy
,
math
1100
x5722
189B
Counting Rhombi
brute force
,
math
1300
x3879
188C
LCM
*special problem
,
implementation
,
math
1400
x435
185D
Visit of the Great
math
,
number theory
2600
x386
185B
Mushroom Scientists
math
,
ternary search
1800
x1603
185A
Plant
math
1300
x5721
183A
Headquarters
constructive algorithms
,
math
1700
x529
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7840
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2461
180B
Divisibility Rules
math
,
number theory
2300
x328
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x294
174A
Problem About Equation
math
1100
x2725
173A
Rock-Paper-Scissors
implementation
,
math
1300
x2234
168A
Wizards and Demonstration
implementation
,
math
900
x10337
167E
Wizards and Bets
dfs and similar
,
graphs
,
math
,
matrices
2900
x548
167C
Wizards and Numbers
games
,
math
2300
x658
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2100
167A
Wizards and Trolleybuses
implementation
,
math
1600
x2014
166E
Tetrahedron
dp
,
math
,
matrices
1500
x20121
166C
Median
greedy
,
math
,
sortings
1500
x6366
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x11924
160C
Find Pair
implementation
,
math
,
sortings
1700
x3386
154D
Flatland Fencing
games
,
math
2400
x419
154B
Colliders
math
,
number theory
1600
x4308
151A
Soft Drinking
implementation
,
math
800
x66763
150C
Smart Cheater
data structures
,
math
,
probabilities
2200
x631
150B
Quantity of Strings
combinatorics
,
dfs and similar
,
graphs
,
math
1600
x3982
150A
Win or Freeze
games
,
math
,
number theory
1400
x7607
149C
Division into Teams
greedy
,
math
,
sortings
1500
x5270
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6835
148B
Escape
implementation
,
math
1500
x5297
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x87875
145C
Lucky Subsequence
combinatorics
,
dp
,
math
2100
x1890
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x13141
142A
Help Farmer
brute force
,
math
1600
x2580
141B
Hopscotch
geometry
,
math
1400
x5151
140A
New Year Table
geometry
,
math
1700
x4094
139B
Wallpaper
implementation
,
math
1600
x1275
136B
Ternary Logic
implementation
,
math
1100
x4739
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2303
134B
Pairs of Numbers
brute force
,
dfs and similar
,
math
,
number theory
1900
x1927
131C
The World is a Theatre
combinatorics
,
math
1400
x10702
131B
Opposites Attract
implementation
,
math
1200
x6875
128E
Birthday
geometry
,
math
2900
x97
126D
Fibonacci Sums
dp
,
math
2300
x808
126A
Hot Bath
binary search
,
brute force
,
math
1900
x1408
125A
Measuring Lengths in Baden
math
1400
x2647
124A
The number of positions
math
1000
x36554
123B
Squares
math
1800
x1099
120E
Put Knight!
games
,
math
1400
x2651
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x3589
120A
Elevator
brute force
,
implementation
,
math
1000
x4510
117D
Not Quick Transformation
divide and conquer
,
math
2500
x331
117A
Elevator
implementation
,
math
1300
x1978
115C
Plumber
math
2200
x589
114A
Cifera
math
1000
x13893
113E
Sleeping
combinatorics
,
implementation
,
math
2700
x117
113D
Museum
math
,
matrices
,
probabilities
2700
x655
113C
Double Happiness
brute force
,
math
,
number theory
2200
x1204
112B
Petya and Square
implementation
,
math
1200
x4076
109E
Lucky Interval
brute force
,
math
2700
x99
108B
Datatypes
math
,
sortings
1400
x2421
107B
Basketball Team
combinatorics
,
dp
,
math
,
probabilities
1600
x3301
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x5877
101C
Vectors
implementation
,
math
2000
x686
100J
Interval Coloring
*special problem
,
greedy
,
math
2400
x61
100I
Rotation
*special problem
,
geometry
,
math
1500
x342
100E
Lamps in a Line
*special problem
,
math
1600
x267
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2700
x450
97C
Winning Strategy
binary search
,
graphs
,
math
,
shortest paths
2400
x299
95D
Horse Races
dp
,
math
2500
x416
94B
Friends
graphs
,
implementation
,
math
1300
x4516
93E
Lostborn
dp
,
math
,
number theory
2600
x435
93D
Flags
dp
,
math
,
matrices
2500
x335
92A
Chips
implementation
,
math
800
x18279
90A
Cableway
greedy
,
math
1000
x4529
87C
Interesting Game
dp
,
games
,
math
2000
x1311
87A
Trains
implementation
,
math
1500
x5204
86E
Long sequence
brute force
,
math
,
matrices
2700
x180
86D
Powerful array
data structures
,
implementation
,
math
,
two pointers
2200
x12664
86B
Tetris revisited
constructive algorithms
,
graph matchings
,
greedy
,
math
2200
x402
86A
Reflection
math
1600
x1344
84A
Toy Army
math
,
number theory
900
x14629
83D
Numbers
dp
,
math
,
number theory
2400
x825
83B
Doctor
binary search
,
math
,
sortings
1800
x1618
83A
Magical Array
math
1300
x6096
82A
Double Cola
implementation
,
math
1100
x29565
81C
Average Score
greedy
,
math
,
sortings
1700
x1633
80B
Depression
geometry
,
math
1200
x4234
79E
Security System
math
2900
x122
78D
Archer's Shot
binary search
,
geometry
,
math
,
two pointers
2300
x303
77B
Falling Anvils
math
,
probabilities
1800
x2553
76E
Points
implementation
,
math
1700
x1662
76D
Plus and xor
dp
,
greedy
,
math
1700
x2005
76C
Mutation
bitmasks
,
dp
,
math
2700
x271
75D
Big Maximum Sum
data structures
,
dp
,
greedy
,
implementation
,
math
,
trees
2000
x1744
73E
Morrowindows
math
,
number theory
2400
x324
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expression parsing
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implementation
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matrices
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number theory
probabilities
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string suffix structures
strings
ternary search
trees
two pointers
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