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# Problem Tags Rating Solved
261-A Maxim and Discounts
greedy sortings
1400
260-E Dividing Kingdom
binary search brute force data structures
2500
260-D Black and White Tree
constructive algorithms dsu graphs +2
2100
260-C Balls and Boxes
constructive algorithms greedy implementation
1700
260-B Ancient Prophesy
brute force implementation strings
1600
260-A Adding Digits
implementation math
1400
259-B Little Elephant and Magic Square
brute force implementation
1100
259-A Little Elephant and Chess
brute force strings
1000
258-E Little Elephant and Tree
data structures dfs and similar trees
2400
258-D Little Elephant and Broken Sorting
dp math probabilities
2600
258-C Little Elephant and LCM
binary search combinatorics dp +1
2000
258-B Little Elephant and Elections
brute force combinatorics dp
1900
258-A Little Elephant and Bits
greedy math
1100
257-E Greedy Elevator
data structures implementation
2200
257-D Sum
greedy math
1900
257-C View Angle
brute force geometry math
1800
257-B Playing Cubes
games greedy implementation
1300
257-A Sockets
greedy implementation sortings
1100
256-E Lucky Arrays
data structures
2400
256-D Liars and Serge
dp
2700
255-E Furlo and Rublo and Game
games implementation math
2200
255-D Mr. Bender and Square
binary search implementation math
1800
255-C Almost Arithmetical Progression
brute force dp
1500
255-B Code Parsing
implementation
1200
255-A Greg's Workout
implementation
800
254-E Dormitory
dp implementation
2100
254-D Rats
brute force dfs and similar graphs +2
2300
254-C Anagram
greedy strings
1800
254-B Jury Size
brute force implementation
1500
254-A Cards with Numbers
constructive algorithms sortings
1200
253-E Printer
binary search data structures implementation +1
2200
253-D Table with Letters - 2
brute force two pointers
2000
253-C Text Editor
data structures dfs and similar graphs +2
1600
253-B Physics Practical
binary search dp sortings +1
1400
253-A Boys and Girls
greedy
1100
252-B Unsorting Array
brute force sortings
1800
252-A Little Xor
brute force implementation
1100
251-E Tree and Table
dfs and similar dp implementation +1
3000
251-D Two Sets
bitmasks math
2700
251-C Number Transformation
dp greedy number theory
2000
251-B Playing with Permutations
implementation math
1800
251-A Points on Line
binary search combinatorics two pointers
1300
250-E Mad Joe
brute force
2000
250-D Building Bridge
geometry ternary search two pointers
1900
250-C Movie Critics
greedy
1600
250-B Restoring IPv6
implementation strings
1500
250-A Paper Work
greedy
1000
249-E Endless Matrix
math
2600
249-D Donkey and Stars
data structures dp geometry +2
2700
248-E Piglet's Birthday
dp math probabilities
2600