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# Problem Tags Rating Solved
551-D GukiZ and Binary Operations
combinatorics implementation math +2
2100
551-C GukiZ hates Boxes
binary search greedy
2200
551-B ZgukistringZ
brute force constructive algorithms implementation +1
1800
551-A GukiZ and Contest
brute force implementation sortings
800
550-E Brackets in Implications
constructive algorithms greedy implementation +1
2200
550-D Regular Bridge
constructive algorithms graphs implementation
1900
550-C Divisibility by Eight
brute force dp math
1500
550-B Preparing Olympiad
bitmasks brute force
1400
550-A Two Substrings
brute force dp greedy +2
1500
549-H Degenerate Matrix
binary search math
2100
549-G Happy Line
constructive algorithms greedy sortings
2200
549-F Yura and Developers
data structures divide and conquer
2800
549-E Sasha Circle
geometry math
2700
549-D Haar Features
greedy implementation
1900
549-C The Game Of Parity
games
2200
549-B Looksery Party
constructive algorithms dfs and similar graphs +1
2300
549-A Face Detection
implementation strings
900
548-B Mike and Fun
brute force dp greedy +1
1400
548-A Mike and Fax
brute force implementation strings
1100
547-E Mike and Friends
data structures string suffix structures strings +1
2800
547-D Mike and Fish
constructive algorithms dfs and similar graphs
2600
547-C Mike and Foam
bitmasks combinatorics dp +2
2300
547-B Mike and Feet
binary search data structures dp +1
1900
547-A Mike and Frog
brute force greedy implementation +1
2200
546-E Soldier and Traveling
flows graphs math
2100
546-D Soldier and Number Game
constructive algorithms dp math +1
1700
546-C Soldier and Cards
brute force dfs and similar games
1400
546-B Soldier and Badges
brute force greedy implementation +1
1200
546-A Soldier and Bananas
brute force implementation math
800
545-E Paths and Trees
graphs greedy shortest paths
2000
545-D Queue
greedy implementation sortings
1300
545-C Woodcutters
dp greedy
1500
545-B Equidistant String
greedy
1100
545-A Toy Cars
implementation
900
544-B Sea and Islands
constructive algorithms implementation
1400
544-A Set of Strings
implementation strings
1100
543-E Listening to Music
constructive algorithms data structures
3200
543-D Road Improvement
dp trees
2300
543-C Remembering Strings
bitmasks dp
2500
543-B Destroying Roads
constructive algorithms graphs shortest paths
2100
543-A Writing Code
dp
1800
542-F Quest
dp greedy
2100
542-E Playing on Graph
graphs shortest paths
2600
542-D Superhero's Job
dfs and similar dp hashing +2
2600
542-C Idempotent functions
constructive algorithms graphs math
2000
542-B Duck Hunt
data structures
3100
542-A Place Your Ad Here
data structures sortings
2400
540-E Infinite Inversions
binary search data structures implementation +2
2100
540-D Bad Luck Island
dp probabilities
1900
540-C Ice Cave
dfs and similar
2000