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Rayan
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Codeforces Round 1006 (Div. 3)
2 days
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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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Custom test
Problems
#
Name
260C
Balls and Boxes
constructive algorithms
,
greedy
,
implementation
1700
x3009
260B
Ancient Prophesy
brute force
,
implementation
,
strings
1600
x3884
260A
Adding Digits
implementation
,
math
1400
x15239
259B
Little Elephant and Magic Square
brute force
,
implementation
1100
x14154
259A
Little Elephant and Chess
brute force
,
strings
1000
x9330
258E
Little Elephant and Tree
data structures
,
dfs and similar
,
trees
2400
x1157
258D
Little Elephant and Broken Sorting
dp
,
math
,
probabilities
2600
x1303
258C
Little Elephant and LCM
binary search
,
combinatorics
,
dp
,
math
2000
x1808
258B
Little Elephant and Elections
brute force
,
combinatorics
,
dp
1900
x1458
258A
Little Elephant and Bits
greedy
,
math
1100
x23653
257E
Greedy Elevator
data structures
,
implementation
2200
x303
257D
Sum
greedy
,
math
1900
x1639
257C
View Angle
brute force
,
geometry
,
math
1800
x4440
257B
Playing Cubes
games
,
greedy
,
implementation
1300
x7302
257A
Sockets
greedy
,
implementation
,
sortings
1100
x6582
256E
Lucky Arrays
data structures
2400
x676
256D
Liars and Serge
dp
2700
x261
255E
Furlo and Rublo and Game
games
,
implementation
,
math
2200
x882
255D
Mr. Bender and Square
binary search
,
implementation
,
math
1800
x2043
255C
Almost Arithmetical Progression
brute force
,
dp
1500
x4790
255B
Code Parsing
implementation
1200
x5041
255A
Greg's Workout
implementation
800
x29364
254E
Dormitory
dp
,
implementation
2100
x695
254D
Rats
brute force
,
dfs and similar
,
graphs
,
implementation
,
shortest paths
2300
x585
254C
Anagram
greedy
,
strings
1800
x1508
254B
Jury Size
brute force
,
implementation
1500
x2165
254A
Cards with Numbers
constructive algorithms
,
sortings
1200
x7216
253E
Printer
binary search
,
data structures
,
implementation
,
sortings
2200
x557
253D
Table with Letters - 2
brute force
,
two pointers
2000
x856
253C
Text Editor
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x2685
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x11027
253A
Boys and Girls
greedy
1100
x11445
252B
Unsorting Array
brute force
,
sortings
1800
x1731
252A
Little Xor
brute force
,
implementation
1100
x5420
251E
Tree and Table
dfs and similar
,
dp
,
implementation
,
trees
3000
x179
251D
Two Sets
bitmasks
,
math
2700
x485
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1053
251B
Playing with Permutations
implementation
,
math
1800
x1284
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x18417
250E
Mad Joe
brute force
2000
x476
250D
Building Bridge
geometry
,
ternary search
,
two pointers
1900
x919
250C
Movie Critics
greedy
1600
x2048
250B
Restoring IPv6
implementation
,
strings
1500
x2017
250A
Paper Work
greedy
1000
x4215
249E
Endless Matrix
math
2600
x334
249D
Donkey and Stars
data structures
,
dp
,
geometry
,
math
,
sortings
2700
x473
248E
Piglet's Birthday
dp
,
math
,
probabilities
2600
x597
248D
Sweets for Everyone!
binary search
,
greedy
,
implementation
2300
x503
248C
Robo-Footballer
binary search
,
geometry
2000
x858
248B
Chilly Willy
math
,
number theory
1400
x5415
248A
Cupboards
implementation
800
x23085
246E
Blood Cousins Return
binary search
,
data structures
,
dfs and similar
,
dp
,
sortings
2400
x3548
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9601
246C
Beauty Pageant
brute force
,
constructive algorithms
,
greedy
1600
x2664
246B
Increase and Decrease
greedy
,
math
1300
x11542
246A
Buggy Sorting
constructive algorithms
,
greedy
,
sortings
900
x9431
245H
Queries for Number of Palindromes
dp
,
hashing
,
strings
1800
x7193
245G
Suggested Friends
brute force
,
graphs
2200
x469
245F
Log Stream Analysis
binary search
,
brute force
,
implementation
,
strings
2000
x902
245E
Mishap in Club
greedy
,
implementation
1400
x3356
245D
Restoring Table
constructive algorithms
,
greedy
1500
x2377
245C
Game with Coins
greedy
1700
x1565
245B
Internet Address
implementation
,
strings
1100
x5302
245A
System Administrator
implementation
800
x8598
244B
Undoubtedly Lucky Numbers
bitmasks
,
brute force
,
dfs and similar
1600
x4568
244A
Dividing Orange
implementation
900
x8040
243E
Matrix
data structures
3000
x196
243D
Cubes
data structures
,
dp
,
geometry
,
two pointers
2700
x223
243C
Colorado Potato Beetle
dfs and similar
,
implementation
2200
x533
243B
Hydra
graphs
,
sortings
2000
x1250
243A
The Brand New Function
bitmasks
1600
x4025
242E
XOR on Segment
bitmasks
,
data structures
2000
x9926
242D
Dispute
dfs and similar
,
graphs
,
greedy
2100
x1907
242C
King's Path
dfs and similar
,
graphs
,
hashing
,
shortest paths
1800
x9063
242B
Big Segment
implementation
,
sortings
1100
x16080
242A
Heads or Tails
brute force
,
implementation
1100
x6466
241G
Challenging Balloons
constructive algorithms
1900
x552
241F
Race
brute force
,
implementation
2300
x266
241E
Flights
graphs
,
shortest paths
2600
x1189
241D
Numbers
2900
x385
241C
Mirror Box
geometry
,
implementation
2000
x514
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x885
241A
Old Peykan
greedy
1300
x2269
240F
TorCoder
data structures
2600
x2024
240E
Road Repairs
dfs and similar
,
graphs
,
greedy
2800
x359
239B
Easy Tape Programming
brute force
,
implementation
1500
x1379
239A
Two Bags of Potatoes
greedy
,
implementation
,
math
1200
x19352
238E
Meeting Her
dp
,
graphs
,
shortest paths
2600
x401
238D
Tape Programming
data structures
,
implementation
2900
x256
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1265
238B
Boring Partition
constructive algorithms
1800
x1343
238A
Not Wool Sequences
constructive algorithms
,
math
1300
x2060
237E
Build String
flows
,
graphs
2000
x1797
237D
T-decomposition
dfs and similar
,
graphs
,
greedy
,
trees
2000
x578
237C
Primes on Interval
binary search
,
number theory
,
two pointers
1600
x5968
237B
Young Table
implementation
,
sortings
1500
x2246
237A
Free Cash
implementation
1000
x27465
236B
Easy Number Challenge
implementation
,
number theory
1300
x14774
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x226854
235E
Number Challenge
combinatorics
,
dp
,
implementation
,
math
,
number theory
2600
x796
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