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Before contest
Codeforces Round 950 (Div. 3)
24:04:02
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Difficulty:
—
greedy
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
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
#
Name
296A
Yaroslav and Permutations
greedy
,
math
1100
x22114
288A
Polo the Penguin and Strings
greedy
1300
x6302
285C
Building Permutation
greedy
,
implementation
,
sortings
1200
x22602
285A
Slightly Decreasing Permutations
greedy
,
implementation
1100
x13134
276B
Little Girl and Game
games
,
greedy
1300
x27420
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4087
265B
Roadside Trees (Simplified Edition)
greedy
,
implementation
1000
x16931
263B
Squares
greedy
,
implementation
,
sortings
900
x8740
262B
Roma and Changing Signs
greedy
1200
x10974
261A
Maxim and Discounts
greedy
,
sortings
1400
x5104
258A
Little Elephant and Bits
greedy
,
math
1100
x22176
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x6884
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6394
253A
Boys and Girls
greedy
1100
x10985
250A
Paper Work
greedy
1000
x4002
246B
Increase and Decrease
greedy
,
math
1300
x11017
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9078
245E
Mishap in Club
greedy
,
implementation
1400
x3230
241A
Old Peykan
greedy
1300
x2205
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x18256
231A
Team
brute force
,
greedy
800
x302733
230A
Dragons
greedy
,
sortings
1000
x75046
225A
Dice Tower
constructive algorithms
,
greedy
1100
x11178
215B
Olympic Medal
greedy
,
math
1300
x5388
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5950
203C
Photographer
greedy
,
sortings
1400
x5592
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15962
196A
Lexicographically Maximum Subsequence
greedy
,
strings
1100
x5312
190A
Vasya and the Bus
greedy
,
math
1100
x5722
186B
Growing Mushrooms
greedy
,
sortings
1200
x5341
178A3
Educational Game
greedy
1100
x1396
178A2
Educational Game
greedy
1000
x1578
176A
Trading Business
greedy
,
sortings
1200
x1419
174B
File List
dp
,
greedy
,
implementation
1400
x2196
169B
Replacing Digits
greedy
1100
x3198
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4694
160B
Unlucky Ticket
greedy
,
sortings
1100
x13628
160A
Twins
greedy
,
sortings
900
x111803
159B
Matchmaker
*special problem
,
greedy
,
sortings
1100
x3686
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2459
158B
Taxi
*special problem
,
greedy
,
implementation
1100
x83056
155B
Combination
greedy
,
sortings
1100
x10044
149A
Business trip
greedy
,
implementation
,
sortings
900
x38064
145A
Lucky Conversion
greedy
,
implementation
1200
x6967
137B
Permutation
greedy
1000
x13359
135A
Replacement
greedy
,
implementation
,
sortings
1300
x7452
120F
Spiders
dp
,
greedy
,
trees
1400
x3517
116B
Little Pigs and Wolves
greedy
,
implementation
1100
x13464
111A
Petya and Inequiations
greedy
1400
x4644
103A
Testing Pants for Sadness
greedy
,
implementation
,
math
1100
x5877
101A
Homework
greedy
1200
x3716
92B
Binary Number
greedy
1300
x4719
90A
Cableway
greedy
,
math
1000
x4529
79A
Bus Game
greedy
1200
x3984
69B
Bets
greedy
,
implementation
1200
x3196
62A
A Student's Dream
greedy
,
math
1300
x3380
58B
Coins
greedy
1300
x11865
58A
Chat room
greedy
,
strings
1000
x123318
57A
Square Earth?
dfs and similar
,
greedy
,
implementation
1300
x2820
50A
Domino piling
greedy
,
math
800
x231144
45I
TCMCF+++
greedy
1400
x2318
43C
Lucky Tickets
greedy
1300
x4163
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2766
39B
Company Income Growth
greedy
1300
x2573
34B
Sale
greedy
,
sortings
900
x49253
33A
What is for dinner?
greedy
,
implementation
1200
x3882
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5171
26B
Regular Bracket Sequence
greedy
1400
x17694
23A
You're Given a String...
brute force
,
greedy
1200
x5097
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x17029
12C
Fruits
greedy
,
implementation
,
sortings
1100
x5809
6C
Alice, Bob and Chocolate
greedy
,
two pointers
1200
x13089
4B
Before an Exam
constructive algorithms
,
greedy
1200
x23845
3A
Shortest path of the king
greedy
,
shortest paths
1000
x18648
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