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number theory
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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probabilities
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ternary search
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Problems
#
Name
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10057
1926E
Vlad and an Odd Ordering
binary search
,
bitmasks
,
data structures
,
dp
,
implementation
,
math
,
number theory
1500
x10031
1366D
Two Divisors
constructive algorithms
,
math
,
number theory
2000
x9918
1005D
Polycarp and Div 3
dp
,
greedy
,
number theory
1500
x9824
757B
Bash's Big Day
greedy
,
math
,
number theory
1400
x9821
1091C
New Year and the Sphere Transmission
math
,
number theory
1400
x9791
1200C
Round Corridor
math
,
number theory
1400
x9697
414A
Mashmokh and Numbers
constructive algorithms
,
number theory
1500
x9642
264B
Good Sequences
dp
,
number theory
1500
x9623
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x9612
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9524
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9485
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9385
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9354
1548B
Integers Have Friends
binary search
,
data structures
,
divide and conquer
,
math
,
number theory
,
two pointers
1800
x9307
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9275
1033B
Square Difference
math
,
number theory
1100
x9158
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9157
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9095
1155C
Alarm Clocks Everywhere
math
,
number theory
1300
x9062
742B
Arpa’s obvious problem and Mehrdad’s terrible solution
brute force
,
math
,
number theory
1500
x9032
1967B1
Reverse Card (Easy Version)
brute force
,
math
,
number theory
1400
x9025
1771C
Hossam and Trainees
greedy
,
math
,
number theory
1600
x9011
870C
Maximum splitting
dp
,
greedy
,
math
,
number theory
1300
x8955
678C
Joty and Chocolate
implementation
,
math
,
number theory
1600
x8951
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8943
1110C
Meaningless Operations
constructive algorithms
,
math
,
number theory
1500
x8919
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x8908
1401D
Maximum Distributed Tree
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
number theory
,
sortings
,
trees
1800
x8863
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x8842
1612D
X-Magic Pair
math
,
number theory
1600
x8835
1907E
Good Triples
brute force
,
combinatorics
,
number theory
1600
x8795
1228C
Primes and Multiplication
math
,
number theory
1700
x8699
876B
Divisiblity of Differences
implementation
,
math
,
number theory
1300
x8682
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x8530
343A
Rational Resistance
math
,
number theory
1600
x8520
346A
Alice and Bob
games
,
math
,
number theory
1600
x8457
1295D
Same GCDs
math
,
number theory
1800
x8424
1062B
Math
greedy
,
math
,
number theory
1500
x8412
1766D
Lucky Chains
math
,
number theory
1600
x8373
1061C
Multiplicity
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x8360
1034A
Enlarge GCD
number theory
1800
x8304
735B
Urbanization
greedy
,
number theory
,
sortings
1100
x8302
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8268
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x8264
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8036
1702F
Equate Multisets
constructive algorithms
,
data structures
,
greedy
,
math
,
number theory
1700
x7942
1209B
Koala and Lights
implementation
,
math
,
number theory
1300
x7941
361B
Levko and Permutation
constructive algorithms
,
math
,
number theory
1200
x7881
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x7870
858A
k-rounding
brute force
,
math
,
number theory
1100
x7849
1627D
Not Adding
brute force
,
dp
,
math
,
number theory
1900
x7837
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x7818
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x7808
1798C
Candy Store
greedy
,
math
,
number theory
1700
x7782
1195D1
Submarine in the Rybinsk Sea (easy edition)
combinatorics
,
math
,
number theory
1500
x7769
1025B
Weakened Common Divisor
brute force
,
greedy
,
number theory
1600
x7754
299A
Ksusha and Array
brute force
,
number theory
,
sortings
1000
x7748
474F
Ant colony
data structures
,
math
,
number theory
2100
x7706
1113B
Sasha and Magnetic Machines
greedy
,
number theory
1300
x7663
900B
Position in Fraction
math
,
number theory
1300
x7629
150A
Win or Freeze
games
,
math
,
number theory
1400
x7580
1852A
Ntarsis' Set
binary search
,
math
,
number theory
1800
x7566
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x7546
1876B
Effects of Anti Pimples
combinatorics
,
number theory
,
sortings
1500
x7515
1928C
Physical Education Lesson
brute force
,
math
,
number theory
1600
x7465
1244C
The Football Season
brute force
,
math
,
number theory
2000
x7425
1225D
Power Products
hashing
,
math
,
number theory
1800
x7389
515B
Drazil and His Happy Friends
brute force
,
dsu
,
meet-in-the-middle
,
number theory
1300
x7363
1114C
Trailing Loves (or L'oeufs?)
brute force
,
implementation
,
math
,
number theory
1700
x7251
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7197
1178D
Prime Graph
constructive algorithms
,
greedy
,
math
,
number theory
1500
x7145
267A
Subtractions
math
,
number theory
900
x7139
1331B
Limericks
*special problem
,
math
,
number theory
x6977
840A
Leha and Function
combinatorics
,
greedy
,
math
,
number theory
,
sortings
1300
x6953
922C
Cave Painting
brute force
,
number theory
1600
x6848
1690F
Shifting String
graphs
,
math
,
number theory
,
strings
1700
x6811
937B
Vile Grasshoppers
brute force
,
math
,
number theory
1400
x6792
1932E
Final Countdown
implementation
,
math
,
number theory
1600
x6779
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x6669
59B
Fortune Telling
implementation
,
number theory
1200
x6658
1656D
K-good
constructive algorithms
,
math
,
number theory
1900
x6606
633B
A Trivial Problem
brute force
,
constructive algorithms
,
math
,
number theory
1300
x6540
1152C
Neko does Maths
brute force
,
math
,
number theory
1800
x6527
986A
Fair
graphs
,
greedy
,
number theory
,
shortest paths
1600
x6522
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6496
495B
Modular Equations
math
,
number theory
1600
x6461
1475G
Strange Beauty
dp
,
math
,
number theory
,
sortings
1900
x6407
284A
Cows and Primitive Roots
implementation
,
math
,
number theory
1400
x6368
71C
Round Table Knights
dp
,
math
,
number theory
1600
x6231
920F
SUM and REPLACE
brute force
,
data structures
,
dsu
,
number theory
2000
x6230
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6170
1470B
Strange Definition
bitmasks
,
graphs
,
hashing
,
math
,
number theory
1900
x6148
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6148
992B
Nastya Studies Informatics
math
,
number theory
1600
x6103
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6066
833A
The Meaningless Game
math
,
number theory
1700
x6026
1505B
DMCA
*special problem
,
implementation
,
number theory
1600
x6003
1635D
Infinite Set
bitmasks
,
dp
,
math
,
matrices
,
number theory
,
strings
1800
x5999
1848C
Vika and Price Tags
math
,
number theory
1800
x5956
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