| 87-B |
Vasya and Types
|
implementation
strings
|
1800
|
| 87-A |
Trains
|
implementation
math
|
1500
|
| 86-E |
Long sequence
|
brute force
math
matrices
|
2700
|
| 86-D |
Powerful array
|
data structures
implementation
math
+1
|
2200
|
| 86-C |
Genetic engineering
|
dp
string suffix structures
trees
|
2500
|
| 86-B |
Tetris revisited
|
constructive algorithms
graph matchings
greedy
+1
|
2200
|
| 86-A |
Reflection
|
math
|
1600
|
| 85-E |
Guard Towers
|
binary search
dsu
geometry
+2
|
2600
|
| 85-D |
Sum of Medians
|
binary search
brute force
data structures
+1
|
2300
|
| 85-C |
Petya and Tree
|
binary search
dfs and similar
probabilities
+2
|
2200
|
| 85-B |
Embassy Queue
|
data structures
greedy
|
1800
|
| 85-A |
Domino
|
constructive algorithms
implementation
|
1300
|
| 84-C |
Biathlon
|
binary search
implementation
|
1700
|
| 84-A |
Toy Army
|
math
number theory
|
900
|
| 83-E |
Two Subsequences
|
bitmasks
dp
|
2800
|
| 83-D |
Numbers
|
dp
math
number theory
|
2400
|
| 83-C |
Track
|
graphs
greedy
shortest paths
|
2400
|
| 83-B |
Doctor
|
binary search
math
sortings
|
1800
|
| 83-A |
Magical Array
|
math
|
1300
|
| 82-E |
Corridor
|
geometry
|
2600
|
| 82-D |
Two out of Three
|
dp
|
2000
|
| 82-C |
General Mobilization
|
data structures
dfs and similar
sortings
|
2000
|
| 82-B |
Sets
|
constructive algorithms
hashing
implementation
|
1700
|
| 82-A |
Double Cola
|
implementation
math
|
1100
|
| 81-E |
Pairs
|
dfs and similar
dp
dsu
+3
|
2700
|
| 81-D |
Polycarp's Picture Gallery
|
constructive algorithms
greedy
|
2100
|
| 81-C |
Average Score
|
greedy
math
sortings
|
1700
|
| 81-B |
Sequence Formatting
|
implementation
strings
|
1700
|
| 81-A |
Plug-in
|
implementation
|
1400
|
| 80-B |
Depression
|
geometry
math
|
1200
|
| 80-A |
Panoramix's Prediction
|
brute force
|
800
|
| 79-E |
Security System
|
math
|
2900
|
| 79-D |
Password
|
bitmasks
dp
shortest paths
|
2800
|
| 79-C |
Beaver
|
data structures
dp
greedy
+3
|
1800
|
| 79-B |
Colorful Field
|
implementation
sortings
|
1400
|
| 79-A |
Bus Game
|
greedy
|
1200
|
| 78-E |
Evacuation
|
flows
graphs
shortest paths
|
2300
|
| 78-D |
Archer's Shot
|
binary search
geometry
math
+1
|
2300
|
| 78-C |
Beaver Game
|
dp
games
number theory
|
2000
|
| 78-B |
Easter Eggs
|
constructive algorithms
implementation
|
1200
|
| 78-A |
Haiku
|
implementation
strings
|
800
|
| 77-E |
Martian Food
|
geometry
|
2800
|
| 77-D |
Domino Carpet
|
dp
implementation
|
2300
|
| 77-C |
Beavermuncher-0xFF
|
dfs and similar
dp
dsu
+2
|
2100
|
| 77-B |
Falling Anvils
|
math
probabilities
|
1800
|
| 77-A |
Heroes
|
brute force
implementation
|
1400
|
| 76-F |
Tourist
|
binary search
data structures
dp
|
2300
|
| 76-E |
Points
|
implementation
math
|
1700
|
| 76-D |
Plus and xor
|
dp
greedy
math
|
1700
|
| 76-C |
Mutation
|
bitmasks
dp
math
|
2700
|