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Problems
#
Name
294D
Shaass and Painter Robot
brute force
,
implementation
,
number theory
2500
x305
293C
Cube Problem
brute force
,
math
,
number theory
2400
x554
293B
Distinct Paths
brute force
,
combinatorics
2700
x773
292C
Beautiful IP Addresses
brute force
2000
x933
291C
Network Mask
*special problem
,
bitmasks
,
brute force
,
implementation
1600
x1666
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x16799
289A
Polo the Penguin and Segments
brute force
,
implementation
1100
x8766
287A
IQ Test
brute force
,
implementation
1100
x18923
284B
Cows and Poker Game
brute force
,
implementation
1000
x6678
281B
Nearest Fraction
brute force
,
implementation
,
two pointers
1700
x2937
280E
Sequence Transformation
brute force
,
data structures
,
dp
,
implementation
,
math
3000
x199
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x48327
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5514
278B
New Problem
brute force
,
strings
1500
x3421
274C
The Last Hole!
brute force
,
geometry
2600
x347
271B
Prime Matrix
binary search
,
brute force
,
math
,
number theory
1300
x12473
271A
Beautiful Year
brute force
800
x128760
268A
Games
brute force
800
x81534
263E
Rhombus
brute force
,
data structures
,
dp
2500
x394
263C
Circle of Numbers
brute force
,
dfs and similar
,
implementation
2000
x1055
261E
Maxim and Calculator
brute force
,
dp
,
two pointers
2800
x405
260E
Dividing Kingdom
binary search
,
brute force
,
data structures
2500
x420
260B
Ancient Prophesy
brute force
,
implementation
,
strings
1600
x3745
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x13707
259A
Little Elephant and Chess
brute force
,
strings
1000
x8946
258B
Little Elephant and Elections
brute force
,
combinatorics
,
dp
1900
x1422
257C
View Angle
brute force
,
geometry
,
math
1800
x4201
255C
Almost Arithmetical Progression
brute force
,
dp
1500
x4634
254D
Rats
brute force
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
2300
x497
254B
Jury Size
brute force
,
implementation
1500
x2135
253D
Table with Letters - 2
brute force
,
two pointers
2000
x810
252B
Unsorting Array
brute force
,
sortings
1800
x1685
252A
Little Xor
brute force
,
implementation
1100
x5176
250E
Mad Joe
brute force
2000
x438
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9229
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2608
245G
Suggested Friends
brute force
,
graphs
2200
x424
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x860
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4393
242A
Heads or Tails
brute force
,
implementation
1100
x6241
241F
Race
brute force
,
implementation
2300
x260
239B
Easy Tape Programming
brute force
,
implementation
1500
x1360
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x195139
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7334
231D
Magic Box
brute force
,
geometry
1600
x4041
231A
Team
brute force
,
greedy
800
x302035
229A
Shifts
brute force
,
two pointers
1500
x3450
228B
Two Tables
brute force
,
implementation
1400
x3434
224A
Parallelepiped
brute force
,
geometry
,
math
1100
x25509
222A
Shooshuns and Sequence
brute force
,
implementation
1200
x10407
219C
Color Stripe
brute force
,
dp
,
greedy
1600
x6556
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8950
217D
Bitonix' Patrol
bitmasks
,
brute force
,
combinatorics
,
dfs and similar
,
math
2900
x245
217B
Blackboard Fibonacci
brute force
,
math
2100
x860
217A
Ice Skating
brute force
,
dfs and similar
,
dsu
,
graphs
1200
x20480
215C
Crosses
brute force
,
implementation
2100
x508
215A
Bicycle Chain
brute force
,
implementation
900
x13979
214B
Hometask
brute force
,
constructive algorithms
,
greedy
,
math
1600
x4897
214A
System of Equations
brute force
800
x33825
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5950
205A
Little Elephant and Rozdil
brute force
,
implementation
900
x21642
203B
Game on Paper
brute force
,
implementation
1300
x2556
203A
Two Problems
brute force
,
implementation
1200
x4114
202B
Brand New Easy Problem
brute force
1700
x808
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15937
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x389
200D
Programming Language
binary search
,
brute force
,
expression parsing
,
implementation
1800
x878
200C
Football Championship
brute force
,
implementation
1800
x1004
200A
Cinema
brute force
,
data structures
2400
x660
199A
Hexadecimal's theorem
brute force
,
constructive algorithms
,
implementation
,
number theory
900
x25246
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x8502
193E
Fibonacci Number
brute force
,
math
,
matrices
2900
x322
193B
Xor
brute force
2000
x991
192B
Walking in the Rain
brute force
,
implementation
1100
x6153
192A
Funky Numbers
binary search
,
brute force
,
implementation
1300
x10162
189B
Counting Rhombi
brute force
,
math
1300
x3878
189A
Cut Ribbon
brute force
,
dp
1300
x63158
183B
Zoo
brute force
,
geometry
1700
x677
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7837
181B
Number of Triplets
binary search
,
brute force
1300
x2900
181A
Series of Crimes
brute force
,
geometry
,
implementation
800
x6727
177D1
Encrypting Messages
brute force
1200
x2055
177C2
Party
brute force
,
dfs and similar
,
dsu
,
graphs
1500
x2454
175E
Power Defence
brute force
,
dp
,
geometry
,
greedy
2600
x260
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x293
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2350
173C
Spiral Maximum
brute force
,
dp
1900
x960
172A
Phone Code
*special problem
,
brute force
,
implementation
800
x5912
171F
ucyhf
*special problem
,
brute force
,
implementation
,
number theory
1600
x1252
171D
Broken checker
*special problem
,
brute force
1300
x2520
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6243
165C
Another Problem on Strings
binary search
,
brute force
,
dp
,
math
,
strings
,
two pointers
1600
x11913
164D
Minimum Diameter
binary search
,
brute force
3100
x229
163D
Large Refrigerator
brute force
2900
x481
161E
Polycarpus the Safecracker
brute force
,
dp
2500
x462
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4691
159D
Palindrome pairs
*special problem
,
brute force
,
dp
,
strings
1500
x4256
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2922
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6181
157A
Game Outcome
brute force
800
x7429
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brute force
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
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number theory
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ternary search
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two pointers
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