| 697-B |
Barnicle
|
brute force
implementation
math
+1
|
1400
|
| 697-A |
Pineapple Incident
|
implementation
math
|
900
|
| 696-F |
...Dary!
|
binary search
geometry
two pointers
|
3300
|
| 696-E |
...Wait for it...
|
data structures
dsu
trees
|
3000
|
| 696-D |
Legen...
|
data structures
dp
matrices
+1
|
2500
|
| 696-C |
PLEASE
|
combinatorics
dp
implementation
+2
|
2000
|
| 696-B |
Puzzles
|
dfs and similar
math
probabilities
+1
|
1700
|
| 696-A |
Lorenzo Von Matterhorn
|
brute force
data structures
implementation
+1
|
1500
|
| 691-F |
Couple Cover
|
brute force
dp
number theory
|
2200
|
| 691-E |
Xor-sequences
|
matrices
|
1900
|
| 691-D |
Swaps in Permutation
|
dfs and similar
dsu
math
|
1700
|
| 691-C |
Exponential notation
|
implementation
strings
|
1800
|
| 691-B |
s-palindrome
|
implementation
strings
|
1600
|
| 691-A |
Fashion in Berland
|
implementation
|
1000
|
| 690-F3 |
Tree of Life (hard)
|
trees
|
3200
|
| 690-F2 |
Tree of Life (medium)
|
constructive algorithms
hashing
trees
|
2700
|
| 690-F1 |
Tree of Life (easy)
|
|
1300
|
| 690-E2 |
Photographs (II)
|
|
2600
|
| 690-E1 |
Photographs (I)
|
|
1800
|
| 690-D3 |
The Wall (hard)
|
dp
|
2100
|
| 690-D2 |
The Wall (medium)
|
combinatorics
|
1800
|
| 690-D1 |
The Wall (easy)
|
|
1200
|
| 690-C3 |
Brain Network (hard)
|
trees
|
2200
|
| 690-C2 |
Brain Network (medium)
|
dfs and similar
graphs
trees
|
1500
|
| 690-C1 |
Brain Network (easy)
|
|
1300
|
| 690-B3 |
Recover Polygon (hard)
|
data structures
|
2600
|
| 690-B2 |
Recover Polygon (medium)
|
geometry
|
2600
|
| 690-B1 |
Recover Polygon (easy)
|
|
1700
|
| 690-A3 |
Collective Mindsets (hard)
|
|
2400
|
| 690-A2 |
Collective Mindsets (medium)
|
|
2300
|
| 690-A1 |
Collective Mindsets (easy)
|
|
1100
|
| 689-E |
Mike and Geometry Problem
|
combinatorics
data structures
dp
+2
|
2000
|
| 689-D |
Friends and Subsequences
|
binary search
data structures
|
2100
|
| 689-C |
Mike and Chocolate Thieves
|
binary search
combinatorics
math
|
1700
|
| 689-B |
Mike and Shortcuts
|
dfs and similar
graphs
greedy
+1
|
1600
|
| 689-A |
Mike and Cellphone
|
brute force
constructive algorithms
implementation
|
1400
|
| 688-B |
Lovely Palindromes
|
constructive algorithms
math
|
1000
|
| 688-A |
Opponents
|
implementation
|
800
|
| 687-E |
TOF
|
dfs and similar
graphs
|
2900
|
| 687-D |
Dividing Kingdom II
|
brute force
data structures
dsu
+2
|
2500
|
| 687-C |
The Values You Can Make
|
dp
|
1900
|
| 687-B |
Remainders Game
|
chinese remainder theorem
math
number theory
|
1800
|
| 687-A |
NP-Hard Problem
|
dfs and similar
graphs
|
1500
|
| 686-B |
Little Robber Girl's Zoo
|
constructive algorithms
implementation
sortings
|
1100
|
| 686-A |
Free Ice Cream
|
constructive algorithms
implementation
|
800
|
| 685-E |
Travelling Through the Snow Queen's Kingdom
|
bitmasks
brute force
divide and conquer
+1
|
2800
|
| 685-D |
Kay and Eternity
|
brute force
implementation
sortings
|
2600
|
| 685-C |
Optimal Point
|
binary search
math
|
2900
|
| 685-B |
Kay and Snowflake
|
data structures
dfs and similar
dp
+1
|
1900
|
| 685-A |
Robbers' watch
|
brute force
combinatorics
dp
+1
|
1700
|