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Codeforces Round 950 (Div. 3)
44:45:20
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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
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
463A
Caisa and Sugar
brute force
,
implementation
1200
x9114
462A
Appleman and Easy Task
brute force
,
implementation
1000
x16593
460E
Roland and Rose
brute force
,
geometry
,
math
,
sortings
2700
x336
460D
Little Victor and Set
brute force
,
constructive algorithms
,
math
2300
x982
460B
Little Dima and Equation
brute force
,
implementation
,
math
,
number theory
1500
x12121
460A
Vasya and Socks
brute force
,
implementation
,
math
900
x44490
457C
Elections
brute force
2100
x870
453B
Little Pony and Harmony Chest
bitmasks
,
brute force
,
dp
2000
x4543
452B
4-point polyline
brute force
,
constructive algorithms
,
geometry
,
trees
1800
x1981
452A
Eevee
brute force
,
implementation
,
strings
1000
x7910
451C
Predict Outcome of the Game
brute force
,
implementation
,
math
1700
x3302
448E
Divisors
brute force
,
dfs and similar
,
implementation
,
number theory
2200
x1450
448D
Multiplication Table
binary search
,
brute force
1800
x13368
446B
DZY Loves Modification
brute force
,
data structures
,
greedy
2000
x3518
443B
Kolya and Tandem Repeat
brute force
,
implementation
,
strings
1500
x3993
442A
Borya and Hanabi
bitmasks
,
brute force
,
implementation
1700
x2098
440C
One-Based Arithmetic
brute force
,
dfs and similar
,
divide and conquer
1800
x894
439C
Devu and Partitioning of the Array
brute force
,
constructive algorithms
,
implementation
,
number theory
1700
x3802
436F
Banners
brute force
,
data structures
,
dp
3000
x361
435D
Special Grid
brute force
,
dp
,
greedy
2000
x748
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15830
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11512
431B
Shower Line
brute force
,
implementation
1200
x10523
430B
Balls Game
brute force
,
two pointers
1400
x3636
425A
Sereja and Swaps
brute force
,
sortings
1500
x3815
424D
Biathlon Track
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
2300
x558
416B
Art Union
brute force
,
dp
,
implementation
1300
x8542
409H
A + B Strikes Back
*special problem
,
brute force
,
constructive algorithms
,
dsu
,
implementation
1500
x8702
407C
Curious Array
brute force
,
combinatorics
,
implementation
,
math
2500
x957
407A
Triangle
brute force
,
geometry
,
implementation
,
math
1600
x4758
402C
Searching for Graph
brute force
,
constructive algorithms
,
graphs
1500
x5713
402B
Trees in a Row
brute force
,
implementation
1400
x3693
401D
Roman and Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
number theory
2000
x3988
400B
Inna and New Matrix of Candies
brute force
,
implementation
,
schedules
1200
x7369
394D
Physical Education and Buns
brute force
,
implementation
,
math
x262
394A
Counting Sticks
brute force
,
implementation
x2634
391D1
Supercollider
brute force
x202
391C1
The Tournament
brute force
x183
391B
Word Folding
brute force
x381
387B
George and Round
brute force
,
greedy
,
two pointers
1200
x11942
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2114
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9432
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9566
385A
Bear and Raspberry
brute force
,
greedy
,
implementation
1000
x16254
380A
Sereja and Prefixes
binary search
,
brute force
1600
x2656
379D
New Year Letter
bitmasks
,
brute force
,
dp
2000
x1484
378A
Playing with Dice
brute force
800
x23198
372B
Counting Rectangles is Fun
brute force
,
divide and conquer
,
dp
1900
x2527
371C
Hamburgers
binary search
,
brute force
1600
x23958
370D
Broken Monitor
brute force
,
constructive algorithms
,
greedy
,
implementation
2100
x615
366E
Dima and Magic Guitar
brute force
,
implementation
,
math
2200
x749
366B
Dima and To-do List
brute force
,
implementation
1200
x6734
364D
Ghd
brute force
,
math
,
probabilities
2900
x1979
364C
Beautiful Set
brute force
,
number theory
2300
x587
363E
Two Circles
brute force
,
data structures
,
implementation
2500
x193
363B
Fence
brute force
,
dp
1100
x49711
359D
Pair of Numbers
binary search
,
brute force
,
data structures
,
math
,
two pointers
2000
x4870
358E
Dima and Kicks
brute force
,
dsu
,
graphs
,
implementation
2300
x387
358B
Dima and Text Messages
brute force
,
strings
1500
x3685
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7619
357A
Group of Students
brute force
,
greedy
,
implementation
1000
x6722
354C
Vasya and Beautiful Arrays
brute force
,
dp
,
number theory
2100
x2991
354A
Vasya and Robot
brute force
,
greedy
,
math
1500
x5403
352A
Jeff and Digits
brute force
,
implementation
,
math
1000
x24762
350E
Wrong Floyd
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
2200
x751
350A
TL
brute force
,
greedy
,
implementation
1200
x16024
348C
Subset Sums
brute force
,
data structures
2500
x2105
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9162
344B
Simple Molecules
brute force
,
graphs
,
math
1200
x8700
343E
Pumping Stations
brute force
,
dfs and similar
,
divide and conquer
,
flows
,
graphs
,
greedy
,
trees
2900
x691
342B
Xenia and Spies
brute force
,
greedy
,
implementation
1500
x3987
340B
Maximal Area Quadrilateral
brute force
,
geometry
2100
x2027
337E
Divisor Tree
brute force
,
number theory
,
trees
2200
x1007
336C
Vasily the Bear and Sequence
brute force
,
greedy
,
implementation
,
number theory
1800
x2378
335D
Rectangles and Square
brute force
,
dp
2400
x306
333E
Summer Earnings
binary search
,
bitmasks
,
brute force
,
geometry
,
sortings
2500
x1076
333D
Characteristics of Rectangles
binary search
,
bitmasks
,
brute force
,
implementation
,
sortings
2100
x1868
333C
Lucky Tickets
brute force
,
constructive algorithms
2700
x375
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1340
330A
Cakeminator
brute force
,
implementation
800
x27568
327A
Flipping Game
brute force
,
dp
,
implementation
1200
x40271
320A
Magic Numbers
brute force
,
greedy
900
x33969
317B
Ants
brute force
,
implementation
2000
x1550
317A
Perfect Pair
brute force
1600
x4541
316E1
Summer Homework
brute force
,
data structures
1500
x1448
316D1
PE Lesson
brute force
,
dp
2300
x493
316B1
EKG
brute force
,
dfs and similar
1500
x1362
315A
Sereja and Bottles
brute force
1400
x10756
311C
Fetch the Treasure
brute force
,
data structures
,
graphs
,
shortest paths
2500
x477
309D
Tennis Rackets
brute force
,
geometry
2700
x173
305B
Continued Fractions
brute force
,
implementation
,
math
1700
x2036
305A
Strange Addition
brute force
,
constructive algorithms
,
implementation
1600
x4647
304B
Calendar
brute force
,
implementation
1300
x2926
304A
Pythagorean Theorem II
brute force
,
math
1200
x10172
303C
Minimum Modular
brute force
,
graphs
,
math
,
number theory
2400
x857
300C
Beautiful Numbers
brute force
,
combinatorics
1800
x8955
300B
Coach
brute force
,
dfs and similar
,
graphs
1500
x6140
300A
Array
brute force
,
constructive algorithms
,
implementation
1100
x22027
299B
Ksusha the Squirrel
brute force
,
implementation
900
x5148
299A
Ksusha and Array
brute force
,
number theory
,
sortings
1000
x7785
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