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Rayan
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Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
13:53:58
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Difficulty:
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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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Status
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Custom test
Problems
#
Name
534B
Covered Path
dp
,
greedy
,
math
1400
x10348
526B
Om Nom and Dark Park
dfs and similar
,
greedy
,
implementation
1400
x4507
525B
Pasha and String
constructive algorithms
,
greedy
,
math
,
strings
1400
x9449
523C
Name Quest
*special problem
,
greedy
1400
x2505
520B
Two Buttons
dfs and similar
,
graphs
,
greedy
,
implementation
,
math
,
shortest paths
1400
x51646
518B
Tanya and Postcard
greedy
,
implementation
,
strings
1400
x8003
515C
Drazil and Factorial
greedy
,
math
,
sortings
1400
x26168
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20940
513B1
Permutations
brute force
1400
x3628
507B
Amr and Pins
geometry
,
math
1400
x24863
505B
Mr. Kitayuta's Colorful Graph
dfs and similar
,
dp
,
dsu
,
graphs
1400
x13177
493B
Vasya and Wrestling
implementation
1400
x13387
492C
Vanya and Exams
greedy
,
sortings
1400
x14181
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x46638
485A
Factory
implementation
,
math
,
matrices
1400
x8322
479C
Exams
greedy
,
sortings
1400
x29908
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7937
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8533
472C
Design Tutorial: Make It Nondeterministic
greedy
1400
x6369
470A
Crystal Ball Sequence
*special problem
,
implementation
1400
x677
448B
Suffix Structures
implementation
,
strings
1400
x16191
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x12811
441B
Valera and Fruits
greedy
,
implementation
1400
x7109
437C
The Child and Toy
graphs
,
greedy
,
sortings
1400
x14038
436B
Om Nom and Spiders
implementation
,
math
1400
x3056
435B
Pasha Maximizes
greedy
1400
x7054
430B
Balls Game
brute force
,
two pointers
1400
x3737
417C
Football
constructive algorithms
,
graphs
,
implementation
1400
x4679
417B
Crash
implementation
1400
x1792
416A
Guess a number!
greedy
,
implementation
,
two pointers
1400
x8997
414B
Mashmokh and ACM
combinatorics
,
dp
,
number theory
1400
x22661
413C
Jeopardy!
greedy
,
math
1400
x2389
402B
Trees in a Row
brute force
,
implementation
1400
x3822
401C
Team
constructive algorithms
,
greedy
,
implementation
1400
x20095
388A
Fox and Box Accumulation
greedy
,
sortings
1400
x11512
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2187
379C
New Year Ratings Change
greedy
,
sortings
1400
x6575
369B
Valera and Contest
constructive algorithms
,
implementation
,
math
1400
x6529
363C
Fixing Typos
greedy
,
implementation
1400
x13378
359B
Permutation
constructive algorithms
,
dp
,
math
1400
x8088
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7783
357B
Flag Day
constructive algorithms
,
implementation
1400
x8209
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9400
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2604
334B
Eight Point Sets
sortings
1400
x3609
331A1
Oh Sweet Beaverette
brute force
,
implementation
1400
x1385
316A2
Special Task
math
1400
x2151
315A
Sereja and Bottles
brute force
1400
x11229
313C
Ilya and Matrix
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x5662
295A
Greg and Array
data structures
,
implementation
1400
x18368
290D
Orange
*special problem
,
implementation
1400
x1805
290A
Mysterious strings
*special problem
,
implementation
1400
x3010
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x17439
286A
Lucky Permutation
constructive algorithms
,
math
1400
x3187
284A
Cows and Primitive Roots
implementation
,
math
,
number theory
1400
x6612
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x54197
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5625
277A
Learning Languages
dfs and similar
,
dsu
1400
x19076
272B
Dima and Sequence
implementation
,
math
1400
x4037
270B
Multithreading
data structures
,
greedy
,
implementation
1400
x4185
261A
Maxim and Discounts
greedy
,
sortings
1400
x5210
260A
Adding Digits
implementation
,
math
1400
x14884
253B
Physics Practical
binary search
,
dp
,
sortings
,
two pointers
1400
x10828
248B
Chilly Willy
math
,
number theory
1400
x5348
245E
Mishap in Club
greedy
,
implementation
1400
x3299
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7546
228B
Two Tables
brute force
,
implementation
1400
x3471
226A
Flying Saucer Segments
math
1400
x4015
219B
Special Offer! Super Price 999 Bourles!
implementation
1400
x5837
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x6048
203C
Photographer
greedy
,
sortings
1400
x5706
198B
Jumping on Walls
shortest paths
1400
x4358
197B
Limit
math
1400
x4647
188F
Binary Notation
*special problem
,
implementation
1400
x302
188E
HQ9+
*special problem
,
implementation
1400
x502
188C
LCM
*special problem
,
implementation
,
math
1400
x456
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x8109
180C
Letter
dp
1400
x7488
175B
Plane of Tanks: Pro
implementation
1400
x1428
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2406
174B
File List
dp
,
greedy
,
implementation
1400
x2254
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x3005
159A
Friends or Not
*special problem
,
greedy
,
implementation
1400
x2495
158C
Cd and pwd commands
*special problem
,
data structures
,
implementation
1400
x9276
152C
Pocket Book
combinatorics
1400
x10680
150A
Win or Freeze
games
,
math
,
number theory
1400
x7881
141B
Hopscotch
geometry
,
math
1400
x5414
131C
The World is a Theatre
combinatorics
,
math
1400
x11244
130B
Gnikool Ssalg
*special problem
,
implementation
,
strings
1400
x532
125A
Measuring Lengths in Baden
math
1400
x2740
124B
Permutations
brute force
,
combinatorics
,
implementation
1400
x3951
120F
Spiders
dp
,
greedy
,
trees
1400
x3630
120E
Put Knight!
games
,
math
1400
x2744
120D
Three Sons
brute force
1400
x1938
111A
Petya and Inequiations
greedy
1400
x4798
108B
Datatypes
math
,
sortings
1400
x2471
107A
Dorm Water Supply
dfs and similar
,
graphs
1400
x5126
100C
A+B
*special problem
,
implementation
1400
x538
81A
Plug-in
implementation
1400
x11090
79B
Colorful Field
implementation
,
sortings
1400
x7300
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