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Custom test
Problems
#
Name
1762F
Good Pairs
binary search
,
data structures
,
dp
2600
x552
1762E
Tree Sum
combinatorics
,
math
,
trees
2600
x596
1762D
GCD Queries
constructive algorithms
,
interactive
,
number theory
2100
x3267
1762C
Binary Strings are Fun
combinatorics
,
math
1400
x8809
1762B
Make Array Good
constructive algorithms
,
implementation
,
number theory
,
sortings
1100
x16137
1762A
Divide and Conquer
greedy
,
math
,
number theory
800
x18487
1761G
Centroid Guess
interactive
,
probabilities
,
trees
3500
x95
1761F2
Anti-median (Hard Version)
combinatorics
,
dp
,
math
3500
x75
1761F1
Anti-median (Easy Version)
dp
,
math
3100
x196
1761E
Make It Connected
binary search
,
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
matrices
,
trees
,
two pointers
2400
x1715
1761D
Carry Bit
combinatorics
,
math
2100
x2312
1761C
Set Construction
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
1400
x9125
1761B
Elimination of a Ring
constructive algorithms
,
greedy
,
implementation
1000
x12969
1761A
Two Permutations
brute force
,
constructive algorithms
800
x16668
1760G
SlavicG's Favorite Problem
bitmasks
,
dfs and similar
,
graphs
1700
x6828
1760F
Quests
binary search
,
greedy
,
sortings
1500
x11199
1760E
Binary Inversions
data structures
,
greedy
,
math
1100
x19061
1760D
Challenging Valleys
implementation
,
two pointers
1000
x22215
1760C
Advantage
data structures
,
implementation
,
sortings
800
x34730
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41331
1760A
Medium Number
implementation
,
sortings
800
x52964
1759G
Restore the Permutation
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
1900
x4195
1759F
All Possible Digits
binary search
,
data structures
,
greedy
,
math
,
number theory
1800
x3670
1759E
The Humanoid
brute force
,
dp
,
sortings
1500
x9843
1759D
Make It Round
brute force
,
number theory
1400
x11945
1759C
Thermostat
greedy
,
math
,
shortest paths
1100
x16922
1759B
Lost Permutation
math
800
x21530
1759A
Yes-Yes?
implementation
,
strings
800
x28618
1758F
Decent Division
constructive algorithms
,
data structures
3000
x151
1758E
Tick, Tock
combinatorics
,
dfs and similar
,
dsu
,
graphs
2500
x771
1758D
Range = √Sum
binary search
,
brute force
,
constructive algorithms
,
math
,
two pointers
1800
x6819
1758C
Almost All Multiples
greedy
,
number theory
1400
x12829
1758B
XOR = Average
constructive algorithms
900
x20030
1758A
SSeeeeiinngg DDoouubbllee
constructive algorithms
,
strings
800
x24275
1754B
Kevin and Permutation
constructive algorithms
,
greedy
,
math
800
x18444
1754A
Technical Support
greedy
800
x22544
1753F
Minecraft Series
brute force
,
two pointers
3500
x184
1753E
N Machines
binary search
,
brute force
,
greedy
3300
x305
1753D
The Beach
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2400
x1656
1753C
Wish I Knew How to Sort
dp
,
math
,
probabilities
2000
x4138
1753B
Factorial Divisibility
math
,
number theory
1600
x11957
1753A2
Make Nonzero Sum (hard version)
constructive algorithms
,
dp
,
greedy
1500
x9726
1753A1
Make Nonzero Sum (easy version)
constructive algorithms
,
dp
,
greedy
1300
x14219
1750H
BinaryStringForces
constructive algorithms
,
data structures
,
dp
3500
x71
1750G
Doping
combinatorics
,
dp
,
math
3300
x222
1750F
Majority
combinatorics
,
dp
,
math
,
strings
2700
x845
1750E
Bracket Cost
binary search
,
data structures
,
divide and conquer
,
dp
,
greedy
,
strings
2400
x1342
1750D
Count GCD
combinatorics
,
math
,
number theory
1800
x5511
1750C
Complementary XOR
constructive algorithms
,
implementation
1400
x9204
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x15927
1750A
Indirect Sort
constructive algorithms
,
implementation
,
math
800
x16718
1749F
Distance to the Path
data structures
,
dfs and similar
,
trees
2800
x466
1749E
Cactus Wall
constructive algorithms
,
dfs and similar
,
graphs
,
shortest paths
2400
x1591
1749D
Counting Arrays
combinatorics
,
dp
,
math
,
number theory
1900
x5223
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x13226
1749B
Death's Blessing
greedy
900
x20274
1749A
Cowardly Rooks
greedy
,
implementation
800
x21931
1748F
Circular Xor Reversal
bitmasks
,
constructive algorithms
3000
x321
1748E
Yet Another Array Counting Problem
binary search
,
data structures
,
divide and conquer
,
dp
,
flows
,
math
,
trees
2300
x1694
1748D
ConstructOR
bitmasks
,
chinese remainder theorem
,
combinatorics
,
constructive algorithms
,
math
,
number theory
2100
x2645
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10366
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x14146
1748A
The Ultimate Square
math
800
x23409
1747E
List Generation
combinatorics
,
dp
,
math
2900
x480
1747D
Yet Another Problem
binary search
,
bitmasks
,
constructive algorithms
,
data structures
1900
x4456
1747C
Swap Game
games
1200
x20201
1747B
BAN BAN
constructive algorithms
900
x21502
1747A
Two Groups
constructive algorithms
,
greedy
800
x24293
1746G
Olympiad Training
binary search
,
data structures
,
dp
,
flows
,
geometry
,
implementation
,
sortings
3500
x88
1746F
Kazaee
data structures
,
hashing
,
probabilities
2800
x1487
1746E2
Joking (Hard Version)
dp
,
interactive
3200
x361
1746E1
Joking (Easy Version)
binary search
,
constructive algorithms
,
interactive
,
ternary search
2500
x1333
1746D
Paths on the Tree
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1900
x4402
1746C
Permutation Operations
constructive algorithms
,
greedy
,
implementation
,
math
1300
x12292
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x16685
1746A
Maxmina
constructive algorithms
,
greedy
800
x19415
1744F
MEX vs MED
math
,
two pointers
2000
x2862
1744E2
Divisible Numbers (hard version)
brute force
,
math
,
number theory
1900
x5220
1744E1
Divisible Numbers (easy version)
brute force
,
math
,
number theory
1500
x10136
1744D
Divisibility by 2^n
greedy
,
math
,
sortings
1200
x20106
1744C
Traffic Light
binary search
,
implementation
,
two pointers
1000
x23939
1744B
Even-Odd Increments
implementation
,
math
800
x22703
1744A
Number Replacement
greedy
,
implementation
800
x26243
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x241
1743F
Intersection and Union
data structures
,
dp
,
matrices
,
probabilities
2300
x1402
1743E
FTL
binary search
,
dp
2400
x1455
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7244
1743C
Save the Magazines
constructive algorithms
,
dp
,
greedy
1100
x18565
1743B
Permutation Value
constructive algorithms
,
greedy
800
x21859
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x25966
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x9702
1742F
Smaller
constructive algorithms
,
greedy
,
strings
1500
x10686
1742E
Scuza
binary search
,
greedy
,
math
1200
x21537
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x21354
1742C
Stripes
implementation
900
x30650
1742B
Increasing
greedy
,
implementation
,
sortings
800
x43851
1742A
Sum
implementation
800
x63778
1741G
Kirill and Company
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
,
graphs
,
shortest paths
2200
x1402
1741F
Multi-Colored Segments
binary search
,
data structures
,
math
,
sortings
2000
x2203
1741E
Sending a Sequence Over the Network
dp
1600
x10643
←
1
2
...
11
12
13
14
15
...
94
95
→
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binary search
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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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number theory
probabilities
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shortest paths
sortings
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strings
ternary search
trees
two pointers
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