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# Problem Tags Rating Solved
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
891-E Lust
combinatorics math matrices
3000
891-D Sloth
dfs and similar dp graph matchings +1
3100
891-C Envy
data structures dsu graphs
2300
891-B Gluttony
constructive algorithms greedy
2000
891-A Pride
brute force dp greedy +2
1500
889-E Mod Mod Mod
binary search dp math
3000
888-G Xor-MST
bitmasks constructive algorithms data structures
2300
888-F Connecting Vertices
dp graphs
2500
888-E Maximum Subsequence
bitmasks divide and conquer meet-in-the-middle
1800
888-D Almost Identity Permutations
combinatorics dp math
1600
888-C K-Dominant Character
binary search implementation two pointers
1400
888-B Buggy Robot
greedy
1000
888-A Local Extrema
brute force implementation
800
887-F Row of Models
greedy sortings
2500
887-E Little Brother
binary search geometry sortings
2800
887-D Ratings and Reality Shows
data structures two pointers
2400
887-C Solution for Cube
brute force implementation
1500
887-B Cubes for Masha
brute force implementation
1300
887-A Div. 64
implementation
1000
886-F Symmetric Projections
geometry
2900
886-E Maximum Element
combinatorics dp math
2400
886-D Restoration of string
constructive algorithms graphs implementation
2000
886-C Petya and Catacombs
dsu greedy implementation +1
1300
886-B Vlad and Cafes
1000
886-A ACM ICPC
brute force
1000
884-F Anti-Palindromize
flows graphs greedy
2500
884-E Binary Matrix
dsu
2500
884-D Boxes And Balls
data structures greedy
2300
884-C Bertown Subway
dfs and similar greedy math
1500
884-B Japanese Crosswords Strike Back
implementation
1100
884-A Book Reading
implementation
800
883-M Quadcopter Competition
greedy math
1100
883-L Berland.Taxi
data structures
2500
883-K Road Widening
constructive algorithms greedy implementation
1800
883-J Renovation
constructive algorithms greedy sortings
2400
883-I Photo Processing
binary search dp
1900
883-H Palindromic Cut
brute force implementation strings
1800