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# Problem Tags Rating Solved
1927-D Find the Different Ones!
binary search brute force data structures +4
1300
1927-C Choose the Different Ones!
brute force greedy math
1000
1927-B Following the String
constructive algorithms greedy strings
900
1927-A Make it White
greedy strings
800
1926-G Vlad and Trouble at MIT
dfs and similar dp flows +4
1900
1926-F Vlad and Avoiding X
bitmasks brute force dfs and similar +2
2200
1926-E Vlad and an Odd Ordering
binary search bitmasks data structures +4
1500
1926-D Vlad and Division
bitmasks greedy
1300
1926-C Vlad and a Sum of Sum of Digits
dp implementation
1200
1926-B Vlad and Shapes
geometry implementation
800
1926-A Vlad and the Best of Five
implementation
800
1925-D Good Trip
combinatorics dp math +1
1900
1925-B A Balanced Problemset?
brute force greedy math +1
1200
1925-A We Got Everything Covered!
constructive algorithms greedy strings
800
1924-F Anti-Proxy Attendance
constructive algorithms dp interactive +1
3500
1924-E Paper Cutting Again
combinatorics probabilities
3100
1924-D Balanced Subsequences
combinatorics dp math
2700
1924-C Fractal Origami
geometry math matrices
2400
1924-B Space Harbour
data structures implementation math +1
2100
1924-A Did We Get Everything Covered?
constructive algorithms dp greedy +2
1500
1923-F Shrink-Reverse
binary search brute force greedy +4
2800
1923-E Count Paths
data structures dfs and similar dp +3
2000
1923-D Slimes
binary search constructive algorithms data structures +2
1800
1923-C Find B
constructive algorithms greedy
1400
1923-B Monsters Attack!
dp greedy implementation
1100
1923-A Moving Chips
greedy implementation
800
1922-F Replace on Segment
dp graph matchings
2500
1922-E Increasing Subsequences
bitmasks constructive algorithms divide and conquer +2
1800
1922-D Berserk Monsters
brute force data structures dsu +2
1900
1922-C Closest Cities
greedy implementation math
1300
1922-B Forming Triangles
combinatorics constructive algorithms math +1
1200
1922-A Tricky Template
constructive algorithms implementation strings
800
1921-G Mischievous Shooter
brute force data structures divide and conquer +2
2200
1921-F Sum of Progression
brute force data structures dp +2
1900
1921-E Eat the Chip
brute force games greedy +1
1600
1921-D Very Different Array
data structures greedy sortings +1
1100
1921-C Sending Messages
greedy math
900
1921-B Arranging Cats
greedy implementation
800
1921-A Square
greedy math
800
1920-F2 Smooth Sailing (Hard Version)
binary search data structures dsu +3
3000
1920-F1 Smooth Sailing (Easy Version)
binary search brute force data structures +4
2500
1920-E Counting Binary Strings
combinatorics dp math
2100
1920-D Array Repetition
binary search brute force dsu +2
1900
1920-C Partitioning the Array
brute force math number theory
1600
1920-B Summation Game
games greedy math +1
1100
1920-A Satisfying Constraints
brute force greedy math
800
1919-H Tree Diameter
interactive trees
2000
1919-G Tree LGM
constructive algorithms divide and conquer games +1
3500
1919-F2 Wine Factory (Hard Version)
data structures dp flows +2
2800
1919-F1 Wine Factory (Easy Version)
data structures greedy
2300