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# Problem Tags Rating Solved
1898-B Milena and Admirer
greedy math
1500
1898-A Milica and String
brute force implementation strings
800
1896-H2 Cyclic Hamming (Hard Version)
brute force dp fft +2
3500
1896-H1 Cyclic Hamming (Easy Version)
brute force divide and conquer dp +3
3400
1896-G Pepe Racing
constructive algorithms implementation interactive +1
3200
1896-F Bracket Xoring
constructive algorithms greedy implementation +1
2600
1896-E Permutation Sorting
data structures sortings
2100
1896-D Ones and Twos
binary search data structures divide and conquer +2
1700
1896-C Matching Arrays
binary search constructive algorithms greedy +1
1400
1896-B AB Flipping
greedy strings two pointers
900
1896-A Jagged Swaps
sortings
800
1895-G Two Characters, Two Colors
binary search data structures dp +2
3100
1895-F Fancy Arrays
combinatorics dp math +1
2600
1895-E Infinite Card Game
binary search brute force data structures +8
2300
1895-D XOR Construction
bitmasks constructive algorithms data structures +3
1900
1895-C Torn Lucky Ticket
brute force dp hashing +2
1400
1895-B Points and Minimum Distance
greedy math sortings
800
1895-A Treasure Chest
math
800
1894-B Two Out of Three
constructive algorithms
1000
1894-A Secret Sport
implementation strings
800
1893-E Cacti Symphony
combinatorics dfs and similar dp +1
3500
1893-D Colorful Constructive
constructive algorithms data structures greedy
2600
1893-C Freedom of Choice
brute force greedy implementation
2000
1893-B Neutral Tonality
constructive algorithms greedy sortings +1
1700
1893-A Anonymous Informant
brute force dfs and similar graphs +1
1400
1891-F A Growing Tree
data structures dfs and similar trees
2000
1891-E Brukhovich and Exams
brute force greedy implementation +2
2500
1891-D Suspicious logarithms
binary search brute force math
1900
1891-C Smilo and Monsters
binary search constructive algorithms greedy +2
1500
1891-B Deja Vu
brute force math sortings
1100
1891-A Sorting with Twos
constructive algorithms sortings
800
1890-B Qingshan Loves Strings
constructive algorithms implementation
800
1890-A Doremy's Paint 3
constructive algorithms
800
1889-F Doremy's Average Tree
data structures dp greedy +1
3500
1889-E Doremy's Swapping Trees
dfs and similar graphs trees
3500
1889-D Game of Stacks
brute force dfs and similar graphs +2
3000
1889-C2 Doremy's Drying Plan (Hard Version)
data structures dp
2600
1889-C1 Doremy's Drying Plan (Easy Version)
brute force data structures dp +2
2000
1889-B Doremy's Connecting Plan
constructive algorithms greedy math +1
1700
1889-A Qingshan Loves Strings 2
constructive algorithms greedy implementation
1300
1887-F Minimum Segments
constructive algorithms
3400
1887-E Good Colorings
binary search constructive algorithms graphs +1
3100
1887-D Split
binary search data structures divide and conquer +4
2700
1887-C Minimum Array
binary search brute force constructive algorithms +4
2400
1887-B Time Travel
binary search graphs shortest paths
1900
1886-F Diamond Theft
data structures greedy
3300
1886-E I Wanna be the Team Leader
bitmasks constructive algorithms dp +4
2400
1886-D Monocarp and the Set
combinatorics data structures math
2100
1886-C Decreasing String
implementation strings
1600
1886-B Fear of the Dark
binary search geometry math
1200