| 983-C |
Elevator
|
dp
graphs
shortest paths
|
2400
|
| 983-B |
XOR-pyramid
|
dp
|
1800
|
| 983-A |
Finite or not?
|
implementation
math
|
1700
|
| 982-F |
The Meeting Place Cannot Be Changed
|
dfs and similar
graphs
|
2700
|
| 982-E |
Billiard
|
geometry
number theory
|
2600
|
| 982-D |
Shark
|
brute force
data structures
dsu
+1
|
1900
|
| 982-C |
Cut 'em all!
|
dfs and similar
dp
graphs
+2
|
1500
|
| 982-B |
Bus of Characters
|
data structures
greedy
implementation
|
1300
|
| 982-A |
Row
|
brute force
constructive algorithms
|
1200
|
| 981-H |
K Paths
|
combinatorics
data structures
dp
+2
|
3100
|
| 981-G |
Magic multisets
|
data structures
|
2500
|
| 981-F |
Round Marriage
|
binary search
graph matchings
greedy
|
2500
|
| 981-E |
Addition on Segments
|
bitmasks
data structures
divide and conquer
+1
|
2200
|
| 981-D |
Bookshelves
|
bitmasks
dp
greedy
|
1900
|
| 981-C |
Useful Decomposition
|
implementation
trees
|
1400
|
| 981-B |
Businessmen Problems
|
sortings
|
1000
|
| 981-A |
Antipalindrome
|
brute force
implementation
strings
|
900
|
| 980-F |
Cactus to Tree
|
dp
graphs
trees
|
2900
|
| 980-E |
The Number Games
|
data structures
greedy
trees
|
2200
|
| 980-D |
Perfect Groups
|
dp
math
number theory
|
2100
|
| 980-C |
Posterized
|
games
greedy
|
1700
|
| 980-B |
Marlin
|
constructive algorithms
|
1600
|
| 980-A |
Links and Pearls
|
implementation
math
|
900
|
| 979-E |
Kuro and Topological Parity
|
dp
|
2400
|
| 979-D |
Kuro and GCD and XOR and SUM
|
binary search
bitmasks
brute force
+8
|
2200
|
| 979-C |
Kuro and Walking Route
|
dfs and similar
trees
|
1600
|
| 979-B |
Treasure Hunt
|
greedy
|
1800
|
| 979-A |
Pizza, Pizza, Pizza!!!
|
math
|
1000
|
| 978-G |
Petya's Exams
|
greedy
implementation
sortings
|
1700
|
| 978-F |
Mentors
|
binary search
data structures
implementation
|
1500
|
| 978-E |
Bus Video System
|
combinatorics
math
|
1400
|
| 978-D |
Almost Arithmetic Progression
|
brute force
implementation
math
|
1500
|
| 978-C |
Letters
|
binary search
implementation
two pointers
|
1000
|
| 978-B |
File Name
|
greedy
strings
|
800
|
| 978-A |
Remove Duplicates
|
implementation
|
800
|
| 977-F |
Consecutive Subsequence
|
dp
|
1700
|
| 977-E |
Cyclic Components
|
dfs and similar
dsu
graphs
|
1500
|
| 977-D |
Divide by three, multiply by two
|
dfs and similar
math
sortings
|
1400
|
| 977-C |
Less or Equal
|
sortings
|
1200
|
| 977-B |
Two-gram
|
implementation
strings
|
900
|
| 977-A |
Wrong Subtraction
|
implementation
|
800
|
| 976-F |
Minimal k-covering
|
flows
graphs
|
2500
|
| 976-E |
Well played!
|
greedy
sortings
|
2100
|
| 976-D |
Degree Set
|
constructive algorithms
graphs
implementation
|
2500
|
| 976-C |
Nested Segments
|
greedy
implementation
sortings
|
1500
|
| 976-B |
Lara Croft and the New Game
|
implementation
math
|
1300
|
| 976-A |
Minimum Binary Number
|
implementation
|
800
|
| 975-E |
Hag's Khashba
|
geometry
|
2600
|
| 975-D |
Ghosts
|
geometry
math
|
2000
|
| 975-C |
Valhalla Siege
|
binary search
|
1400
|