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Problems
#
Name
1143B
Nirvana
brute force
,
math
,
number theory
1200
x10072
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10061
1366D
Two Divisors
constructive algorithms
,
math
,
number theory
2000
x9925
757B
Bash's Big Day
greedy
,
math
,
number theory
1400
x9857
1005D
Polycarp and Div 3
dp
,
greedy
,
number theory
1500
x9835
1091C
New Year and the Sphere Transmission
math
,
number theory
1400
x9798
1200C
Round Corridor
math
,
number theory
1400
x9704
414A
Mashmokh and Numbers
constructive algorithms
,
number theory
1500
x9644
264B
Good Sequences
dp
,
number theory
1500
x9625
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x9620
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9531
1967B1
Reverse Card (Easy Version)
brute force
,
math
,
number theory
1400
x9510
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9493
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9389
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9359
1548B
Integers Have Friends
binary search
,
data structures
,
divide and conquer
,
math
,
number theory
,
two pointers
1800
x9313
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9284
1033B
Square Difference
math
,
number theory
1100
x9201
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9162
337B
Routine Problem
greedy
,
math
,
number theory
1400
x9098
1155C
Alarm Clocks Everywhere
math
,
number theory
1300
x9067
742B
Arpa’s obvious problem and Mehrdad’s terrible solution
brute force
,
math
,
number theory
1500
x9039
1771C
Hossam and Trainees
greedy
,
math
,
number theory
1600
x9032
678C
Joty and Chocolate
implementation
,
math
,
number theory
1600
x9032
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8964
870C
Maximum splitting
dp
,
greedy
,
math
,
number theory
1300
x8958
1110C
Meaningless Operations
constructive algorithms
,
math
,
number theory
1500
x8924
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
x8866
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x8845
1612D
X-Magic Pair
math
,
number theory
1600
x8842
1907E
Good Triples
brute force
,
combinatorics
,
number theory
1600
x8825
876B
Divisiblity of Differences
implementation
,
math
,
number theory
1300
x8709
1228C
Primes and Multiplication
math
,
number theory
1700
x8702
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x8539
343A
Rational Resistance
math
,
number theory
1600
x8522
346A
Alice and Bob
games
,
math
,
number theory
1600
x8463
1295D
Same GCDs
math
,
number theory
1800
x8433
1062B
Math
greedy
,
math
,
number theory
1500
x8419
1766D
Lucky Chains
math
,
number theory
1600
x8395
1061C
Multiplicity
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x8374
1034A
Enlarge GCD
number theory
1800
x8309
735B
Urbanization
greedy
,
number theory
,
sortings
1100
x8303
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8282
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x8280
1497E1
Square-Free Division (easy version)
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
1700
x8041
1702F
Equate Multisets
constructive algorithms
,
data structures
,
greedy
,
math
,
number theory
1700
x7954
1209B
Koala and Lights
implementation
,
math
,
number theory
1300
x7945
361B
Levko and Permutation
constructive algorithms
,
math
,
number theory
1200
x7886
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x7871
858A
k-rounding
brute force
,
math
,
number theory
1100
x7854
1627D
Not Adding
brute force
,
dp
,
math
,
number theory
1900
x7846
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x7839
1512G
Short Task
brute force
,
dp
,
math
,
number theory
1700
x7813
1798C
Candy Store
greedy
,
math
,
number theory
1700
x7794
1195D1
Submarine in the Rybinsk Sea (easy edition)
combinatorics
,
math
,
number theory
1500
x7770
1025B
Weakened Common Divisor
brute force
,
greedy
,
number theory
1600
x7758
299A
Ksusha and Array
brute force
,
number theory
,
sortings
1000
x7756
474F
Ant colony
data structures
,
math
,
number theory
2100
x7724
1113B
Sasha and Magnetic Machines
greedy
,
number theory
1300
x7665
900B
Position in Fraction
math
,
number theory
1300
x7635
150A
Win or Freeze
games
,
math
,
number theory
1400
x7586
1852A
Ntarsis' Set
binary search
,
math
,
number theory
1800
x7578
582A
GCD Table
constructive algorithms
,
greedy
,
number theory
1700
x7550
1876B
Effects of Anti Pimples
combinatorics
,
number theory
,
sortings
1500
x7536
1928C
Physical Education Lesson
brute force
,
math
,
number theory
1600
x7495
1244C
The Football Season
brute force
,
math
,
number theory
2000
x7427
1225D
Power Products
hashing
,
math
,
number theory
1800
x7399
515B
Drazil and His Happy Friends
brute force
,
dsu
,
meet-in-the-middle
,
number theory
1300
x7365
1114C
Trailing Loves (or L'oeufs?)
brute force
,
implementation
,
math
,
number theory
1700
x7252
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7217
1178D
Prime Graph
constructive algorithms
,
greedy
,
math
,
number theory
1500
x7150
267A
Subtractions
math
,
number theory
900
x7146
1331B
Limericks
*special problem
,
math
,
number theory
x6977
840A
Leha and Function
combinatorics
,
greedy
,
math
,
number theory
,
sortings
1300
x6954
922C
Cave Painting
brute force
,
number theory
1600
x6850
1690F
Shifting String
graphs
,
math
,
number theory
,
strings
1700
x6820
1932E
Final Countdown
implementation
,
math
,
number theory
1600
x6819
937B
Vile Grasshoppers
brute force
,
math
,
number theory
1400
x6794
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x6678
59B
Fortune Telling
implementation
,
number theory
1200
x6666
1656D
K-good
constructive algorithms
,
math
,
number theory
1900
x6621
633B
A Trivial Problem
brute force
,
constructive algorithms
,
math
,
number theory
1300
x6541
1152C
Neko does Maths
brute force
,
math
,
number theory
1800
x6529
986A
Fair
graphs
,
greedy
,
number theory
,
shortest paths
1600
x6526
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6505
495B
Modular Equations
math
,
number theory
1600
x6481
1475G
Strange Beauty
dp
,
math
,
number theory
,
sortings
1900
x6415
284A
Cows and Primitive Roots
implementation
,
math
,
number theory
1400
x6369
71C
Round Table Knights
dp
,
math
,
number theory
1600
x6235
920F
SUM and REPLACE
brute force
,
data structures
,
dsu
,
number theory
2000
x6234
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6171
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6159
1470B
Strange Definition
bitmasks
,
graphs
,
hashing
,
math
,
number theory
1900
x6153
992B
Nastya Studies Informatics
math
,
number theory
1600
x6106
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6067
833A
The Meaningless Game
math
,
number theory
1700
x6026
1635D
Infinite Set
bitmasks
,
dp
,
math
,
matrices
,
number theory
,
strings
1800
x6005
1505B
DMCA
*special problem
,
implementation
,
number theory
1600
x6005
1848C
Vika and Price Tags
math
,
number theory
1800
x5965
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