| 661-F |
Primes in Interval
|
*special
|
1900
|
| 661-E |
Divisibility Check
|
*special
|
2000
|
| 661-D |
Maximal Difference
|
*special
|
2100
|
| 661-C |
Array Sum
|
*special
|
2000
|
| 661-B |
Seasons
|
*special
|
1900
|
| 661-A |
Lazy Caterer Sequence
|
*special
|
1300
|
| 660-F |
Bear and Bowling 4
|
binary search
data structures
divide and conquer
+2
|
2500
|
| 660-E |
Different Subsets For All Tuples
|
combinatorics
math
|
2300
|
| 660-D |
Number of Parallelograms
|
geometry
|
1900
|
| 660-C |
Hard Process
|
binary search
dp
two pointers
|
1600
|
| 660-B |
Seating On Bus
|
implementation
|
1000
|
| 660-A |
Co-prime Array
|
greedy
implementation
math
+1
|
1200
|
| 659-G |
Fence Divercity
|
combinatorics
dp
number theory
|
2300
|
| 659-F |
Polycarp and Hay
|
dfs and similar
dsu
graphs
+2
|
2000
|
| 659-E |
New Reform
|
data structures
dfs and similar
dsu
+2
|
1600
|
| 659-D |
Bicycle Race
|
geometry
implementation
math
|
1500
|
| 659-C |
Tanya and Toys
|
greedy
implementation
|
1200
|
| 659-B |
Qualifying Contest
|
constructive algorithms
sortings
|
1300
|
| 659-A |
Round House
|
implementation
math
|
1000
|
| 658-A |
Bear and Reverse Radewoosh
|
implementation
|
800
|
| 656-G |
You're a Professional
|
*special
|
1900
|
| 656-F |
Ace It!
|
*special
|
1900
|
| 656-E |
Out of Controls
|
*special
|
2000
|
| 656-D |
Rosetta Problem
|
*special
|
2100
|
| 656-C |
Without Text
|
*special
|
2000
|
| 656-B |
Scrambled
|
*special
implementation
|
1700
|
| 656-A |
Da Vinci Powers
|
*special
|
1900
|
| 653-G |
Move by Prime
|
combinatorics
math
number theory
|
3100
|
| 653-F |
Paper task
|
data structures
string suffix structures
strings
|
2600
|
| 653-E |
Bear and Forgotten Tree 2
|
dfs and similar
dsu
graphs
+1
|
2400
|
| 653-D |
Delivery Bears
|
binary search
flows
graphs
|
2200
|
| 653-C |
Bear and Up-Down
|
brute force
implementation
|
1900
|
| 653-B |
Bear and Compressing
|
brute force
dfs and similar
dp
+1
|
1300
|
| 653-A |
Bear and Three Balls
|
brute force
implementation
sortings
|
900
|
| 652-F |
Ants on a Circle
|
constructive algorithms
math
|
2800
|
| 652-E |
Pursuit For Artifacts
|
dfs and similar
dsu
graphs
+1
|
2300
|
| 652-D |
Nested Segments
|
data structures
sortings
|
1800
|
| 652-C |
Foe Pairs
|
combinatorics
sortings
two pointers
|
1800
|
| 652-B |
z-sort
|
sortings
|
1000
|
| 652-A |
Gabriel and Caterpillar
|
implementation
math
|
1400
|
| 651-B |
Beautiful Paintings
|
greedy
sortings
|
1200
|
| 651-A |
Joysticks
|
dp
greedy
implementation
+1
|
1100
|
| 650-E |
Clockwork Bomb
|
data structures
dfs and similar
dsu
+2
|
3200
|
| 650-D |
Zip-line
|
binary search
data structures
dp
+1
|
2600
|
| 650-C |
Table Compression
|
dfs and similar
dp
dsu
+2
|
2200
|
| 650-B |
Image Preview
|
binary search
brute force
dp
+1
|
1900
|
| 650-A |
Watchmen
|
data structures
geometry
math
|
1400
|
| 649-E |
Автобус
|
binary search
data structures
greedy
+1
|
2100
|
| 649-D |
Дефрагментация памяти
|
constructive algorithms
greedy
implementation
|
1600
|
| 649-C |
Печать условий
|
constructive algorithms
greedy
sortings
|
1500
|