| 68-B |
Energy exchange
|
binary search
|
1600
|
| 68-A |
Irrational problem
|
implementation
number theory
|
1100
|
| 67-E |
Save the City!
|
geometry
|
2500
|
| 67-D |
Optical Experiment
|
binary search
data structures
dp
|
1900
|
| 67-C |
Sequence of Balls
|
dp
|
2600
|
| 67-B |
Restoration of the Permutation
|
greedy
|
1800
|
| 67-A |
Partial Teacher
|
dp
graphs
greedy
+1
|
1800
|
| 66-E |
Petya and Post
|
data structures
dp
|
2000
|
| 66-D |
Petya and His Friends
|
constructive algorithms
math
number theory
|
1700
|
| 66-C |
Petya and File System
|
data structures
implementation
|
1800
|
| 66-B |
Petya and Countryside
|
brute force
implementation
|
1100
|
| 66-A |
Petya and Java
|
implementation
strings
|
1300
|
| 65-E |
Harry Potter and Moving Staircases
|
dfs and similar
implementation
|
2900
|
| 65-D |
Harry Potter and the Sorting Hat
|
brute force
dfs and similar
hashing
|
2200
|
| 65-C |
Harry Potter and the Golden Snitch
|
binary search
geometry
|
2100
|
| 65-B |
Harry Potter and the History of Magic
|
brute force
greedy
implementation
|
1700
|
| 65-A |
Harry Potter and Three Spells
|
implementation
math
|
1800
|
| 64-I |
Sort the Table
|
*special
sortings
|
2400
|
| 64-H |
Table Bowling
|
*special
sortings
|
2300
|
| 64-G |
Path Canonization
|
*special
|
2200
|
| 64-F |
Domain
|
*special
expression parsing
|
2000
|
| 64-E |
Prime Segment
|
*special
brute force
math
+1
|
1800
|
| 64-D |
Presents
|
*special
greedy
|
1800
|
| 64-C |
Table
|
*special
greedy
implementation
+1
|
1600
|
| 64-B |
Expression
|
*special
expression parsing
|
1500
|
| 64-A |
Factorial
|
*special
implementation
|
1300
|
| 63-E |
Sweets Game
|
bitmasks
dfs and similar
dp
+2
|
2000
|
| 63-D |
Dividing Island
|
constructive algorithms
|
1900
|
| 63-C |
Bulls and Cows
|
brute force
implementation
|
1700
|
| 63-B |
Settlers' Training
|
implementation
|
1200
|
| 63-A |
Sinking Ship
|
implementation
sortings
strings
|
900
|
| 62-E |
World Evil
|
dp
flows
|
2700
|
| 62-D |
Wormhouse
|
dfs and similar
graphs
|
2300
|
| 62-C |
Inquisition
|
geometry
implementation
sortings
|
2300
|
| 62-B |
Tyndex.Brome
|
binary search
implementation
|
1800
|
| 62-A |
A Student's Dream
|
greedy
math
|
1300
|
| 61-E |
Enemy is weak
|
data structures
trees
|
1900
|
| 61-D |
Eternal Victory
|
dfs and similar
graphs
greedy
+2
|
1800
|
| 61-C |
Capture Valerian
|
math
|
2000
|
| 61-B |
Hard Work
|
strings
|
1300
|
| 61-A |
Ultra-Fast Mathematician
|
implementation
|
800
|
| 60-E |
Mushroom Gnomes
|
math
matrices
|
2600
|
| 60-D |
Savior
|
brute force
dsu
math
|
2500
|
| 60-C |
Mushroom Strife
|
brute force
dfs and similar
|
2100
|
| 60-B |
Serial Time!
|
dfs and similar
dsu
|
1400
|
| 60-A |
Where Are My Flakes?
|
implementation
two pointers
|
1300
|
| 59-E |
Shortest Path
|
graphs
shortest paths
|
2000
|
| 59-D |
Team Arrangement
|
constructive algorithms
greedy
implementation
|
2000
|
| 59-C |
Title
|
expression parsing
|
1600
|
| 59-B |
Fortune Telling
|
implementation
number theory
|
1200
|