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Problems
#
Name
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5952
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x10468
194B
Square
math
1200
x4079
194A
Exams
implementation
,
math
900
x11159
192B
Walking in the Rain
brute force
,
implementation
1100
x6908
190A
Vasya and the Bus
greedy
,
math
1100
x6403
188D
Asterisks
*special problem
,
implementation
1100
x762
188A
Hexagonal Numbers
*special problem
1100
x873
186B
Growing Mushrooms
greedy
,
sortings
1200
x6293
186A
Comparing Strings
implementation
,
strings
1100
x18940
182B
Vasya's Calendar
implementation
1000
x7487
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x9212
180F
Mathematical Analysis Rocks!
constructive algorithms
,
implementation
,
math
1200
x2958
178A3
Educational Game
greedy
1100
x1698
178A2
Educational Game
greedy
1000
x1909
178A1
Educational Game
1000
x1886
177D1
Encrypting Messages
brute force
1200
x2842
177B2
Rectangular Game
number theory
1200
x3496
177B1
Rectangular Game
number theory
1000
x5226
177A2
Good Matrix Elements
implementation
800
x8810
177A1
Good Matrix Elements
implementation
800
x11825
176A
Trading Business
greedy
,
sortings
1200
x1893
174A
Problem About Equation
math
1100
x3419
172B
Pseudorandom Sequence Period
*special problem
,
implementation
,
number theory
1200
x3209
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x8396
171A
Mysterious numbers - 1
*special problem
,
constructive algorithms
1200
x5179
169B
Replacing Digits
greedy
1100
x3801
169A
Chores
sortings
800
x8499
168A
Wizards and Demonstration
implementation
,
math
900
x11757
166A
Rank List
binary search
,
implementation
,
sortings
1100
x21826
165A
Supercentral Point
implementation
1000
x26870
162A
Pentagonal numbers
*special problem
,
implementation
1100
x852
160B
Unlucky Ticket
greedy
,
sortings
1100
x15967
160A
Twins
greedy
,
sortings
900
x154943
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x4254
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x110430
158A
Next Round
*special problem
,
implementation
800
x348240
157B
Trace
geometry
,
sortings
1000
x14361
157A
Game Outcome
brute force
800
x8876
155B
Combination
greedy
,
sortings
1100
x11069
155A
I_love_\%username\%
brute force
800
x98847
152A
Marks
implementation
900
x19071
151B
Phone Numbers
implementation
,
strings
1200
x7021
151A
Soft Drinking
implementation
,
math
800
x100751
149A
Business trip
greedy
,
implementation
,
sortings
900
x47902
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x118210
146A
Lucky Ticket
implementation
800
x17499
145A
Lucky Conversion
greedy
,
implementation
1200
x8089
144A
Arrival of the General
implementation
800
x128733
143B
Help Kingdom of Far Far Away 2
implementation
,
strings
1200
x5402
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x15855
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x107147
139A
Petr and Book
implementation
1000
x39047
137B
Permutation
greedy
1000
x15535
137A
Postcards and photos
implementation
900
x8055
136B
Ternary Logic
implementation
,
math
1100
x5546
136A
Presents
implementation
800
x155824
134A
Average Numbers
brute force
,
implementation
1200
x5133
133B
Unary
implementation
1200
x9548
133A
HQ9+
implementation
900
x131108
131B
Opposites Attract
implementation
,
math
1200
x7744
131A
cAPS lOCK
implementation
,
strings
1000
x106087
130A
Hexagonal numbers
*special problem
,
implementation
900
x2034
129B
Students and Shoelaces
brute force
,
dfs and similar
,
graphs
,
implementation
1200
x14315
129A
Cookies
implementation
900
x25929
127B
Canvas Frames
implementation
1000
x10816
127A
Wasted Time
geometry
900
x12973
125B
Simple XML
implementation
1000
x3830
124A
The number of positions
math
1000
x45674
122B
Lucky Substring
brute force
,
implementation
1000
x13453
122A
Lucky Division
brute force
,
number theory
1000
x157965
121A
Lucky Sum
implementation
1100
x10932
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x4043
120B
Quiz League
implementation
1100
x3724
120A
Elevator
brute force
,
implementation
,
math
1000
x5819
119A
Epic Game
implementation
800
x30139
118B
Present from Lena
constructive algorithms
,
implementation
1000
x35799
118A
String Task
implementation
,
strings
1000
x244607
116B
Little Pigs and Wolves
greedy
,
implementation
1100
x14799
116A
Tram
implementation
800
x188200
115A
Party
dfs and similar
,
graphs
,
trees
900
x47612
114A
Cifera
math
1000
x15426
112B
Petya and Square
implementation
,
math
1200
x4652
112A
Petya and Strings
implementation
,
strings
800
x308982
110B
Lucky String
constructive algorithms
,
strings
1100
x11203
110A
Nearly Lucky Number
implementation
800
x215111
109A
Lucky Sum of Digits
brute force
,
implementation
1000
x20415
108A
Palindromic Times
implementation
,
strings
1000
x10561
106B
Choosing Laptop
brute force
,
implementation
1000
x6991
106A
Card Game
implementation
1000
x8684
104A
Blackjack
implementation
800
x17668
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x6743
102B
Sum of Digits
implementation
1000
x33213
102A
Clothes
brute force
1200
x3489
101A
Homework
greedy
1200
x4526
100A
Carpeting the Room
*special problem
,
implementation
1100
x1075
99A
Help Far Away Kingdom
strings
800
x8050
96A
Football
implementation
,
strings
900
x205729
94A
Restoring Password
implementation
,
strings
900
x12772
92A
Chips
implementation
,
math
800
x22060
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