| 878-A |
Short Program
|
bitmasks
constructive algorithms
|
1600
|
| 877-F |
Ann and Books
|
data structures
flows
hashing
|
2300
|
| 877-E |
Danil and a Part-time Job
|
bitmasks
data structures
trees
|
2000
|
| 877-D |
Olya and Energy Drinks
|
data structures
dfs and similar
graphs
+1
|
2100
|
| 877-C |
Slava and tanks
|
constructive algorithms
|
1600
|
| 877-B |
Nikita and string
|
brute force
dp
|
1500
|
| 877-A |
Alex and broken contest
|
implementation
strings
|
1100
|
| 876-B |
Divisiblity of Differences
|
implementation
math
number theory
|
1300
|
| 876-A |
Trip For Meal
|
math
|
900
|
| 875-F |
Royal Questions
|
dsu
graphs
greedy
|
2500
|
| 875-E |
Delivery Club
|
binary search
data structures
dp
|
2600
|
| 875-D |
High Cry
|
binary search
bitmasks
combinatorics
+2
|
2200
|
| 875-C |
National Property
|
2-sat
dfs and similar
graphs
+1
|
2100
|
| 875-B |
Sorting the Coins
|
dsu
implementation
sortings
+1
|
1500
|
| 875-A |
Classroom Watch
|
brute force
math
|
1200
|
| 873-F |
Forbidden Indices
|
dsu
string suffix structures
strings
|
2400
|
| 873-E |
Awards For Contestants
|
brute force
data structures
dp
|
2300
|
| 873-D |
Merge Sort
|
constructive algorithms
divide and conquer
|
1800
|
| 873-C |
Strange Game On Matrix
|
greedy
two pointers
|
1600
|
| 873-B |
Balanced Substring
|
dp
implementation
|
1500
|
| 873-A |
Chores
|
implementation
|
800
|
| 871-E |
Restore the Tree
|
graphs
greedy
trees
|
2900
|
| 870-F |
Paths
|
data structures
number theory
|
2700
|
| 870-E |
Points, Lines and Ready-made Titles
|
dfs and similar
dsu
graphs
+1
|
2300
|
| 870-D |
Something with XOR Queries
|
brute force
interactive
probabilities
|
2000
|
| 870-C |
Maximum splitting
|
dp
greedy
math
+1
|
1300
|
| 870-B |
Maximum of Maximums of Minimums
|
greedy
|
1200
|
| 870-A |
Search for Pretty Integers
|
brute force
implementation
|
900
|
| 869-E |
The Untended Antiquity
|
data structures
hashing
|
2400
|
| 869-D |
The Overdosing Ubiquity
|
brute force
dfs and similar
graphs
|
2800
|
| 869-C |
The Intriguing Obsession
|
combinatorics
dp
math
|
1800
|
| 869-B |
The Eternal Immortality
|
math
|
1100
|
| 869-A |
The Artful Expedient
|
brute force
implementation
|
1100
|
| 868-G |
El Toll Caves
|
math
|
3300
|
| 868-F |
Yet Another Minimization Problem
|
divide and conquer
dp
|
2500
|
| 868-E |
Policeman and a Tree
|
dp
graphs
trees
|
2700
|
| 868-D |
Huge Strings
|
bitmasks
brute force
dp
+2
|
2200
|
| 868-C |
Qualification Rounds
|
bitmasks
brute force
constructive algorithms
+1
|
1500
|
| 868-B |
Race Against Time
|
implementation
|
1400
|
| 868-A |
Bark to Unlock
|
brute force
implementation
strings
|
900
|
| 867-A |
Between the Offices
|
implementation
|
800
|
| 865-G |
Flowers and Chocolate
|
combinatorics
math
matrices
|
3300
|
| 865-F |
Egg Roulette
|
bitmasks
brute force
divide and conquer
+2
|
3300
|
| 865-E |
Hex Dyslexia
|
bitmasks
brute force
dp
+1
|
3300
|
| 865-D |
Buy Low Sell High
|
constructive algorithms
data structures
greedy
|
2400
|
| 865-C |
Gotta Go Fast
|
binary search
dp
|
2400
|
| 865-B |
Ordering Pizza
|
binary search
sortings
ternary search
|
1900
|
| 865-A |
Save the problem!
|
constructive algorithms
|
1400
|
| 864-F |
Cities Excursions
|
dfs and similar
graphs
trees
|
2700
|
| 864-E |
Fire
|
dp
sortings
|
2000
|