| 1912-K |
Kim's Quest
|
bitmasks
combinatorics
dp
|
1800
|
| 1912-J |
Joy of Pokémon Observation
|
|
2300
|
| 1912-I |
Innovative Washing Machine
|
geometry
math
two pointers
|
3300
|
| 1912-H |
Hypercatapult Commute
|
graphs
|
2400
|
| 1912-G |
Great City Saint Petersburg
|
data structures
|
2400
|
| 1912-F |
Fugitive Frenzy
|
math
probabilities
|
3100
|
| 1912-E |
Evaluate It and Back Again
|
constructive algorithms
implementation
math
|
2200
|
| 1912-D |
Divisibility Test
|
math
|
1900
|
| 1912-C |
Cactus Transformation
|
constructive algorithms
|
3300
|
| 1912-B |
Blueprint for Seating
|
combinatorics
divide and conquer
math
|
2100
|
| 1912-A |
Accumulator Apex
|
data structures
implementation
sortings
|
1900
|
| 1910-J |
Two Colors
|
*special
|
2900
|
| 1910-I |
Inverse Problem
|
*special
combinatorics
dp
|
2700
|
| 1910-H |
Sum of Digits of Sums
|
*special
binary search
data structures
|
2400
|
| 1910-G |
Pool Records
|
*special
greedy
|
2700
|
| 1910-F |
Build Railway Stations
|
*special
greedy
trees
|
2000
|
| 1910-E |
Maximum Sum Subarrays
|
*special
dp
|
2100
|
| 1910-D |
Remove and Add
|
*special
greedy
|
1800
|
| 1910-C |
Poisonous Swamp
|
*special
implementation
|
1600
|
| 1910-B |
Security Guard
|
*special
greedy
|
1600
|
| 1910-A |
Username
|
*special
implementation
|
1100
|
| 1909-I |
Short Permutation Problem
|
combinatorics
dp
fft
+1
|
1900
|
| 1909-H |
Parallel Swaps Sort
|
constructive algorithms
data structures
|
3500
|
| 1909-G |
Pumping Lemma
|
hashing
strings
|
3000
|
| 1909-F2 |
Small Permutation Problem (Hard Version)
|
combinatorics
dp
math
|
2500
|
| 1909-F1 |
Small Permutation Problem (Easy Version)
|
brute force
combinatorics
dp
+1
|
2200
|
| 1909-E |
Multiple Lamps
|
bitmasks
brute force
constructive algorithms
+2
|
2400
|
| 1909-D |
Split Plus K
|
greedy
math
number theory
|
1900
|
| 1909-C |
Heavy Intervals
|
constructive algorithms
data structures
dsu
+3
|
1400
|
| 1909-B |
Make Almost Equal With Mod
|
bitmasks
constructive algorithms
math
+1
|
1200
|
| 1909-A |
Distinct Buttons
|
implementation
math
|
800
|
| 1907-G |
Lights
|
brute force
constructive algorithms
dfs and similar
+3
|
2200
|
| 1907-F |
Shift and Reverse
|
greedy
sortings
|
1800
|
| 1907-E |
Good Triples
|
brute force
combinatorics
number theory
|
1600
|
| 1907-D |
Jumping Through Segments
|
binary search
constructive algorithms
|
1400
|
| 1907-C |
Removal of Unattractive Pairs
|
constructive algorithms
greedy
math
+1
|
1200
|
| 1907-B |
YetnotherrokenKeoard
|
data structures
implementation
strings
|
1000
|
| 1907-A |
Rook
|
implementation
|
800
|
| 1906-M |
Triangle Construction
|
greedy
math
|
1700
|
| 1906-L |
Palindromic Parentheses
|
constructive algorithms
|
2500
|
| 1906-K |
Deck-Building Game
|
divide and conquer
math
|
2500
|
| 1906-J |
Count BFS Graph
|
combinatorics
dp
|
2100
|
| 1906-I |
Contingency Plan 2
|
graph matchings
|
2900
|
| 1906-H |
Twin Friends
|
combinatorics
dp
|
2200
|
| 1906-G |
Grid Game 2
|
games
number theory
|
2900
|
| 1906-F |
Maximize The Value
|
data structures
sortings
|
2100
|
| 1906-E |
Merge Not Sort
|
constructive algorithms
dp
|
1900
|
| 1906-D |
Spaceship Exploration
|
binary search
geometry
|
2800
|
| 1906-C |
Cursed Game
|
interactive
|
3000
|
| 1906-B |
Button Pressing
|
bitmasks
constructive algorithms
hashing
|
2600
|