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brute force
combine-tags-by-or
*combine tags by OR
2-sat
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brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
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Problems
#
Name
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5469
278B
New Problem
brute force
,
strings
1500
x3417
274C
The Last Hole!
brute force
,
geometry
2600
x346
271B
Prime Matrix
binary search
,
brute force
,
math
,
number theory
1300
x12367
271A
Beautiful Year
brute force
800
x127565
268A
Games
brute force
800
x80907
263E
Rhombus
brute force
,
data structures
,
dp
2500
x394
263C
Circle of Numbers
brute force
,
dfs and similar
,
implementation
2000
x1051
261E
Maxim and Calculator
brute force
,
dp
,
two pointers
2800
x403
260E
Dividing Kingdom
binary search
,
brute force
,
data structures
2500
x408
260B
Ancient Prophesy
brute force
,
implementation
,
strings
1600
x3739
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13679
259A
Little Elephant and Chess
brute force
,
strings
1000
x8926
258B
Little Elephant and Elections
brute force
,
combinatorics
,
dp
1900
x1420
257C
View Angle
brute force
,
geometry
,
math
1800
x4191
255C
Almost Arithmetical Progression
brute force
,
dp
1500
x4620
254D
Rats
brute force
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
2300
x497
254B
Jury Size
brute force
,
implementation
1500
x2130
253D
Table with Letters - 2
brute force
,
two pointers
2000
x806
252B
Unsorting Array
brute force
,
sortings
1800
x1679
252A
Little Xor
brute force
,
implementation
1100
x5168
250E
Mad Joe
brute force
2000
x438
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9194
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2602
245G
Suggested Friends
brute force
,
graphs
2200
x423
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x859
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4372
242A
Heads or Tails
brute force
,
implementation
1100
x6233
241F
Race
brute force
,
implementation
2300
x260
239B
Easy Tape Programming
brute force
,
implementation
1500
x1358
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x193232
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7308
231D
Magic Box
brute force
,
geometry
1600
x4032
231A
Team
brute force
,
greedy
800
x299216
229A
Shifts
brute force
,
two pointers
1500
x3438
228B
Two Tables
brute force
,
implementation
1400
x3430
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25359
222A
Shooshuns and Sequence
brute force
,
implementation
1200
x10364
219C
Color Stripe
brute force
,
dp
,
greedy
1600
x6543
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8904
217D
Bitonix' Patrol
bitmasks
,
brute force
,
combinatorics
,
dfs and similar
,
math
2900
x245
217B
Blackboard Fibonacci
brute force
,
math
2100
x854
217A
Ice Skating
brute force
,
dfs and similar
,
dsu
,
graphs
1200
x20370
215C
Crosses
brute force
,
implementation
2100
x480
215A
Bicycle Chain
brute force
,
implementation
900
x13903
214B
Hometask
brute force
,
constructive algorithms
,
greedy
,
math
1600
x4883
214A
System of Equations
brute force
800
x33621
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5934
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x21503
203B
Game on Paper
brute force
,
implementation
1300
x2551
203A
Two Problems
brute force
,
implementation
1200
x4112
202B
Brand New Easy Problem
brute force
1700
x808
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15869
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x388
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x871
200C
Football Championship
brute force
,
implementation
1800
x1000
200A
Cinema
brute force
,
data structures
2400
x658
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x25065
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x8478
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x321
193B
Xor
brute force
2000
x981
192B
Walking in the Rain
brute force
,
implementation
1100
x6143
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x10122
189B
Counting Rhombi
brute force
,
math
1300
x3868
189A
Cut Ribbon
brute force
,
dp
1300
x62457
183B
Zoo
brute force
,
geometry
1700
x677
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7819
181B
Number of Triplets
binary search
,
brute force
1300
x2891
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6702
177D1
Encrypting Messages
brute force
1200
x2031
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x2437
175E
Power Defence
brute force
,
dp
,
geometry
,
greedy
2600
x260
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x289
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2334
173C
Spiral Maximum
brute force
,
dp
1900
x957
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x5892
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1245
171D
Broken checker
*special problem
,
brute force
1300
x2510
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6190
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x11876
164D
Minimum Diameter
binary search
,
brute force
3100
x229
163D
Large Refrigerator
brute force
2900
x480
161E
Polycarpus the Safecracker
brute force
,
dp
2500
x462
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4677
159D
Palindrome pairs
*special problem
,
brute force
,
dp
,
strings
1500
x4247
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2919
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6170
157A
Game Outcome
brute force
800
x7412
156E
Mrs. Hudson's Pancakes
brute force
,
dp
3000
x160
156A
Message
brute force
1700
x2993
155A
I_love_\%username\%
brute force
800
x70572
152D
Frames
brute force
2600
x238
146B
Lucky Mask
brute force
,
implementation
1300
x4226
143A
Help Vasilisa the Wise 2
brute force
,
math
1000
x13048
142C
Help Caretaker
brute force
,
dp
2300
x899
142A
Help Farmer
brute force
,
math
1600
x2567
140B
New Year Cards
brute force
,
greedy
,
implementation
1800
x1478
138E
Hellish Constraints
brute force
,
dp
,
two pointers
2900
x164
135D
Cycle
brute force
,
dfs and similar
,
implementation
2500
x293
135B
Rectangle and Square
brute force
,
geometry
,
math
1600
x2296
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