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Before contest
Codeforces Round 1095 (Div. 2)
28:38:15
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
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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Problems
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Status
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Custom test
Problems
#
Name
157A
Game Outcome
brute force
800
x8606
155A
I_love_\%username\%
brute force
800
x93458
152A
Marks
implementation
900
x18602
151A
Soft Drinking
implementation
,
math
800
x94550
149A
Business trip
greedy
,
implementation
,
sortings
900
x45936
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x112178
146A
Lucky Ticket
implementation
800
x17078
144A
Arrival of the General
implementation
800
x120505
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x15430
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x101244
139A
Petr and Book
implementation
1000
x37437
137B
Permutation
greedy
1000
x15021
137A
Postcards and photos
implementation
900
x7823
136A
Presents
implementation
800
x146148
133A
HQ9+
implementation
900
x124761
131A
cAPS lOCK
implementation
,
strings
1000
x100819
130A
Hexagonal numbers
*special problem
,
implementation
900
x1931
129A
Cookies
implementation
900
x25186
127B
Canvas Frames
implementation
1000
x10416
127A
Wasted Time
geometry
900
x12577
125B
Simple XML
implementation
1000
x3707
124A
The number of positions
math
1000
x44168
122B
Lucky Substring
brute force
,
implementation
1000
x13254
122A
Lucky Division
brute force
,
number theory
1000
x149483
120A
Elevator
brute force
,
implementation
,
math
1000
x5660
119A
Epic Game
implementation
800
x29567
118B
Present from Lena
constructive algorithms
,
implementation
1000
x34522
118A
String Task
implementation
,
strings
1000
x231043
116A
Tram
implementation
800
x176173
115A
Party
dfs and similar
,
graphs
,
trees
900
x43209
114A
Cifera
math
1000
x15070
112A
Petya and Strings
implementation
,
strings
800
x286489
110A
Nearly Lucky Number
implementation
800
x199045
109A
Lucky Sum of Digits
brute force
,
implementation
1000
x19803
108A
Palindromic Times
implementation
,
strings
1000
x10338
106B
Choosing Laptop
brute force
,
implementation
1000
x6863
106A
Card Game
implementation
1000
x8532
104A
Blackjack
implementation
800
x17138
102B
Sum of Digits
implementation
1000
x31902
99A
Help Far Away Kingdom
strings
800
x7712
96A
Football
implementation
,
strings
900
x193292
94A
Restoring Password
implementation
,
strings
900
x12225
92A
Chips
implementation
,
math
800
x21506
90A
Cableway
greedy
,
math
1000
x5490
84A
Toy Army
math
,
number theory
900
x16611
80A
Panoramix's Prediction
brute force
800
x66167
78A
Haiku
implementation
,
strings
800
x15417
75A
Life Without Zeros
implementation
1000
x29692
74A
Room Leader
implementation
1000
x5857
72G
Fibonacci army
*special problem
,
dp
1000
x2829
71A
Way Too Long Words
strings
800
x501879
69A
Young Physicist
implementation
,
math
1000
x201885
63A
Sinking Ship
implementation
,
sortings
,
strings
900
x13405
61A
Ultra-Fast Mathematician
implementation
800
x135907
59A
Word
implementation
,
strings
800
x227383
58A
Chat room
greedy
,
strings
1000
x155694
56A
Bar
implementation
1000
x9631
52A
123-sequence
implementation
900
x10545
50A
Domino piling
greedy
,
math
800
x317767
49A
Sleuth
implementation
800
x15241
48A
Rock-paper-scissors
implementation
,
schedules
900
x7281
47A
Triangular numbers
brute force
,
math
800
x18152
46A
Ball Game
brute force
,
implementation
800
x9923
45A
Codecraft III
implementation
900
x8093
44A
Indian Summer
implementation
900
x17364
43A
Football
strings
1000
x69010
41A
Translation
implementation
,
strings
800
x188013
38A
Army
implementation
800
x26406
37A
Towers
sortings
1000
x27627
35A
Shell Game
implementation
1000
x7567
34B
Sale
greedy
,
sortings
900
x65885
34A
Reconnaissance 2
implementation
800
x34619
32B
Borze
expression parsing
,
implementation
800
x79549
32A
Reconnaissance
brute force
800
x14864
29A
Spit Problem
brute force
1000
x8263
26A
Almost Prime
number theory
900
x42506
22A
Second Order Statistics
brute force
800
x27017
17A
Noldbach problem
brute force
,
math
,
number theory
1000
x21345
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x20728
16A
Flag
implementation
800
x17189
14B
Young Photographer
implementation
1000
x8286
14A
Letter
implementation
800
x12359
13A
Numbers
implementation
,
math
1000
x9425
12A
Super Agent
implementation
800
x15389
11A
Increasing Sequence
constructive algorithms
,
implementation
,
math
900
x15470
10A
Power Consumption Calculation
implementation
900
x8331
9A
Die Roll
math
,
probabilities
800
x69512
6A
Triangle
brute force
,
geometry
900
x22801
5A
Chat Servers Outgoing Traffic
implementation
1000
x11085
4A
Watermelon
brute force
,
math
800
x685291
3A
Shortest path of the king
greedy
,
shortest paths
1000
x22060
1A
Theatre Square
math
1000
x319528
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