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# Problem Tags Rating Solved
1582-F1 Korney Korneevich and XOR (easy version)
bitmasks dp greedy
1800
1582-E Pchelyonok and Segments
binary search data structures dp +2
2000
1582-D Vupsen, Pupsen and 0
constructive algorithms math
1600
1582-C Grandma Capa Knits a Scarf
brute force data structures greedy +2
1200
1582-B Luntik and Subsequences
combinatorics math
900
1582-A Luntik and Concerts
math
800
1581-B Diameter of Graph
constructive algorithms graphs greedy +1
1200
1581-A CQXYM Count Permutations
combinatorics math number theory
800
1580-F Problems for Codeforces
combinatorics fft math
3300
1580-E Railway Construction
brute force constructive algorithms data structures +2
3400
1580-D Subsequence
brute force divide and conquer dp +2
2900
1580-C Train Maintenance
brute force data structures implementation
2200
1580-B Mathematics Curriculum
brute force combinatorics dp +1
2600
1580-A Portal
brute force data structures dp +2
1700
1579-G Minimal Coverage
dp
2200
1579-F Array Stabilization (AND version)
brute force graphs math +2
1700
1579-E2 Array Optimization by Deque
data structures greedy
1700
1579-E1 Permutation Minimization by Deque
constructive algorithms greedy math
1000
1579-D Productive Meeting
constructive algorithms graphs greedy
1400
1579-C Ticks
greedy implementation
1500
1579-B Shifting Sort
implementation sortings
1100
1579-A Casimir's String Solitaire
math strings
800
1578-M The Mind
constructive algorithms interactive probabilities
2700
1578-L Labyrinth
binary search dsu greedy
2400
1578-K Kingdom of Islands
brute force graphs implementation
2800
1578-J Just Kingdom
brute force data structures dfs and similar
3100
1578-I Interactive Rays
geometry interactive
3300
1578-H Higher Order Functions
implementation strings
1700
1578-G Game of Chance
math probabilities
3500
1578-F Framing Pictures
geometry
2900
1578-E Easy Scheduling
implementation math
1200
1578-D Dragon Curve
3200
1578-C Cactus Lady and her Cing
3500
1578-B Building Forest Trails
data structures dsu
2800
1578-A Anti-Tetris
constructive algorithms graphs shortest paths
2800
1576-A Communication Routing Challenge
*special
1575-M Managing Telephone Poles
data structures geometry
2400
1575-L Longest Array Deconstruction
data structures divide and conquer dp +1
2100
1575-K Knitting Batik
implementation math
2200
1575-J Jeopardy of Dropped Balls
binary search brute force dsu +1
1500
1575-I Illusions of the Desert
data structures trees
2300
1575-H Holiday Wall Ornaments
dp strings
2200
1575-G GCD Festival
math number theory
2200
1575-F Finding Expected Value
math
2900
1575-E Eye-Pleasing City Park Tour
data structures trees
2600
1575-D Divisible by Twenty-Five
brute force dfs and similar dp
1800
1575-C Cyclic Sum
data structures fft number theory
3000
1575-B Building an Amusement Park
binary search geometry
2300
1575-A Another Sorting Problem
data structures sortings strings
1100
1574-F Occurrences
combinatorics dfs and similar dp +3
2700