| 903-A |
Hungry Student Problem
|
greedy
implementation
|
900
|
| 902-B |
Coloring a Tree
|
dfs and similar
dsu
greedy
|
1200
|
| 902-A |
Visiting a Friend
|
greedy
implementation
|
1100
|
| 901-E |
Cyclic Cipher
|
fft
math
|
3300
|
| 901-D |
Weighting a Tree
|
constructive algorithms
dfs and similar
graphs
|
2700
|
| 901-C |
Bipartite Segments
|
binary search
data structures
dfs and similar
+3
|
2300
|
| 901-B |
GCD of Polynomials
|
constructive algorithms
math
|
2200
|
| 901-A |
Hashing Trees
|
constructive algorithms
trees
|
1500
|
| 900-E |
Maximum Questions
|
data structures
dp
strings
|
2100
|
| 900-D |
Unusual Sequences
|
bitmasks
combinatorics
dp
+2
|
2000
|
| 900-C |
Remove Extra One
|
brute force
data structures
math
|
1700
|
| 900-B |
Position in Fraction
|
math
number theory
|
1300
|
| 900-A |
Find Extra One
|
geometry
implementation
|
800
|
| 899-F |
Letters Removing
|
data structures
strings
|
2100
|
| 899-E |
Segments Removal
|
data structures
dsu
flows
+2
|
2000
|
| 899-D |
Shovel Sale
|
constructive algorithms
math
|
1800
|
| 899-C |
Dividing the numbers
|
constructive algorithms
graphs
math
|
1300
|
| 899-B |
Months and Years
|
implementation
|
1200
|
| 899-A |
Splitting in Teams
|
constructive algorithms
greedy
math
|
800
|
| 898-F |
Restoring the Expression
|
brute force
hashing
math
|
2300
|
| 898-E |
Squares and not squares
|
constructive algorithms
greedy
|
1600
|
| 898-D |
Alarm Clock
|
greedy
|
1600
|
| 898-C |
Phone Numbers
|
implementation
strings
|
1400
|
| 898-B |
Proper Nutrition
|
brute force
implementation
number theory
|
1100
|
| 898-A |
Rounding
|
implementation
math
|
800
|
| 897-B |
Chtholly's request
|
brute force
|
1300
|
| 897-A |
Scarborough Fair
|
implementation
|
800
|
| 896-E |
Welcome home, Chtholly
|
data structures
dsu
|
3100
|
| 896-D |
Nephren Runs a Cinema
|
chinese remainder theorem
combinatorics
math
+1
|
2900
|
| 896-C |
Willem, Chtholly and Seniorious
|
data structures
probabilities
|
2600
|
| 896-B |
Ithea Plays With Chtholly
|
binary search
constructive algorithms
games
+2
|
2000
|
| 896-A |
Nephren gives a riddle
|
binary search
dfs and similar
|
1700
|
| 895-E |
Eyes Closed
|
data structures
probabilities
|
2300
|
| 895-D |
String Mark
|
combinatorics
math
strings
|
2100
|
| 895-C |
Square Subsets
|
bitmasks
combinatorics
dp
+1
|
2000
|
| 895-B |
XK Segments
|
binary search
math
sortings
+1
|
1700
|
| 895-A |
Pizza Separation
|
brute force
implementation
|
1200
|
| 894-E |
Ralph and Mushrooms
|
dp
graphs
|
2100
|
| 894-D |
Ralph And His Tour in Binary Country
|
brute force
data structures
trees
|
2200
|
| 894-C |
Marco and GCD Sequence
|
constructive algorithms
math
|
1900
|
| 894-B |
Ralph And His Magic Field
|
combinatorics
constructive algorithms
math
+1
|
1800
|
| 894-A |
QAQ
|
brute force
dp
|
800
|
| 893-F |
Subtree Minimum Query
|
data structures
trees
|
2300
|
| 893-E |
Counting Arrays
|
combinatorics
dp
math
+1
|
2000
|
| 893-D |
Credit Card
|
data structures
dp
greedy
+1
|
1900
|
| 893-C |
Rumor
|
dfs and similar
graphs
greedy
|
1300
|
| 893-B |
Beautiful Divisors
|
brute force
implementation
|
1000
|
| 893-A |
Chess For Three
|
implementation
|
900
|
| 892-B |
Wrath
|
greedy
implementation
two pointers
|
1200
|
| 892-A |
Greed
|
greedy
implementation
|
900
|