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# Problem Tags Rating Solved
1545-C AquaMoon and Permutations
2-sat brute force combinatorics +3
2800
1545-B AquaMoon and Chess
combinatorics math
1900
1545-A AquaMoon and Strange Sort
sortings
1500
1543-E The Final Pursuit
bitmasks constructive algorithms divide and conquer +3
2700
1543-D2 RPD and Rap Sheet (Hard Version)
brute force constructive algorithms interactive +1
2200
1543-D1 RPD and Rap Sheet (Easy Version)
bitmasks constructive algorithms interactive +1
1700
1543-C Need for Pink Slips
bitmasks brute force dfs and similar +3
1900
1543-B Customising the Track
combinatorics greedy math
900
1543-A Exciting Bets
greedy math number theory
900
1542-E2 Abnormal Permutation Pairs (hard version)
combinatorics dp fft +1
2700
1542-E1 Abnormal Permutation Pairs (easy version)
combinatorics dp fft +1
2400
1542-D Priority Queue
combinatorics dp implementation +2
2200
1542-C Strange Function
math number theory
1600
1542-B Plus and Multiply
constructive algorithms math number theory
1500
1542-A Odd Set
math
800
1541-B Pleasant Pairs
brute force implementation math +1
1200
1541-A Pretty Permutations
constructive algorithms greedy implementation
800
1540-E Tasty Dishes
math matrices
3500
1540-D Inverse Inversions
binary search brute force data structures
3200
1540-C2 Converging Array (Hard Version)
dp math
2900
1540-C1 Converging Array (Easy Version)
dp math
2700
1540-B Tree Array
brute force combinatorics dp +4
2300
1540-A Great Graphs
constructive algorithms graphs greedy +2
1400
1539-F Strange Array
data structures greedy sortings
2600
1539-E Game with Cards
binary search constructive algorithms data structures +3
2500
1539-D PriceFixed
binary search greedy implementation +2
1600
1539-C Stable Groups
greedy sortings
1200
1539-B Love Song
dp implementation strings
800
1539-A Contest Start
combinatorics geometry greedy +1
1000
1538-G Gift Set
binary search greedy math +1
2100
1538-F Interesting Function
binary search dp math +1
1500
1538-E Funny Substrings
data structures hashing implementation +2
2100
1538-D Another Problem About Dividing Numbers
constructive algorithms math number theory
1700
1538-C Number of Pairs
binary search data structures math +1
1300
1538-B Friends and Candies
greedy math
800
1538-A Stone Game
brute force dp greedy
800
1537-F Figure Fixing
constructive algorithms dfs and similar dsu +3
2200
1537-E2 Erase and Extend (Hard Version)
binary search data structures greedy +4
2200
1537-E1 Erase and Extend (Easy Version)
binary search brute force dp +6
1600
1537-D Deleting Divisors
games math number theory
1700
1537-C Challenging Cliffs
constructive algorithms greedy implementation +1
1200
1537-B Bad Boy
constructive algorithms greedy math
900
1537-A Arithmetic Array
greedy math
800
1536-F Omkar and Akmar
chinese remainder theorem combinatorics constructive algorithms +6
2600
1536-E Omkar and Forest
combinatorics graphs math +1
2300
1536-D Omkar and Medians
data structures greedy implementation
2000
1536-C Diluc and Kaeya
data structures dp hashing +1
1500
1536-B Prinzessin der Verurteilung
brute force constructive algorithms strings
1200
1536-A Omkar and Bad Story
brute force constructive algorithms
800
1535-F String Distance
binary search brute force data structures +3
3000