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# Problem Tags Rating Solved
452-D Washer, Dryer, Folder
greedy implementation
1900
452-C Magic Trick
combinatorics math probabilities
2100
452-B 4-point polyline
brute force constructive algorithms geometry +1
1800
452-A Eevee
brute force implementation strings
1000
451-E Devu and Flowers
bitmasks combinatorics number theory
2300
451-D Count Good Substrings
math
2000
451-C Predict Outcome of the Game
brute force implementation math
1700
451-B Sort the Array
implementation sortings
1300
451-A Game With Sticks
implementation
900
450-B Jzzhu and Sequences
implementation math
1300
450-A Jzzhu and Children
implementation
1000
449-E Jzzhu and Squares
dp math number theory
2900
449-D Jzzhu and Numbers
bitmasks combinatorics dp
2400
449-C Jzzhu and Apples
constructive algorithms number theory
2500
449-B Jzzhu and Cities
graphs greedy shortest paths
2000
449-A Jzzhu and Chocolate
greedy math
1700
448-E Divisors
brute force dfs and similar implementation +1
2200
448-D Multiplication Table
binary search brute force
1800
448-C Painting Fence
divide and conquer dp greedy
1900
448-B Suffix Structures
implementation strings
1400
448-A Rewards
implementation
800
447-B DZY Loves Strings
greedy implementation
1000
447-A DZY Loves Hash
implementation
800
446-E DZY Loves Bridges
math matrices
3100
446-D DZY Loves Games
math matrices probabilities
2800
446-C DZY Loves Fibonacci Numbers
data structures math number theory
2400
446-B DZY Loves Modification
brute force data structures greedy
2000
446-A DZY Loves Sequences
dp implementation two pointers
1600
445-B DZY Loves Chemistry
dfs and similar dsu greedy
1400
445-A DZY Loves Chessboard
dfs and similar implementation
1200
444-E DZY Loves Planting
binary search dsu trees
2700
444-D DZY Loves Strings
binary search hashing strings +1
2500
444-C DZY Loves Colors
data structures
2400
444-B DZY Loves FFT
probabilities
2300
444-A DZY Loves Physics
greedy math
1600
443-B Kolya and Tandem Repeat
brute force implementation strings
1500
443-A Anton and Letters
constructive algorithms implementation
800
442-E Gena and Second Distance
geometry
3100
442-D Adam and Tree
data structures trees
2600
442-C Artem and Array
data structures greedy
2500
442-B Andrey and Problem
greedy math probabilities
1800
442-A Borya and Hanabi
bitmasks brute force implementation
1700
441-E Valera and Number
bitmasks dp math +1
2400
441-D Valera and Swaps
constructive algorithms dsu graphs +3
2100
441-C Valera and Tubes
constructive algorithms dfs and similar implementation
1500
441-B Valera and Fruits
greedy implementation
1400
441-A Valera and Antique Items
implementation
1000
440-D Berland Federalization
dp trees
2200
440-C One-Based Arithmetic
brute force dfs and similar divide and conquer
1800
440-B Balancer
greedy implementation
1600