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# Problem Tags Rating Solved
744-D Hongcow Draws a Circle
geometry
3200
744-C Hongcow Buys a Deck of Cards
bitmasks brute force dp
2400
744-B Hongcow's Game
bitmasks divide and conquer interactive
1900
744-A Hongcow Builds A Nation
dfs and similar graphs
1500
743-E Vladik and cards
binary search bitmasks brute force +1
2200
743-D Chloe and pleasant prizes
dfs and similar dp graphs +1
1800
743-C Vladik and fractions
brute force constructive algorithms math +1
1500
743-B Chloe and the sequence
binary search bitmasks constructive algorithms +1
1200
743-A Vladik and flights
constructive algorithms greedy implementation
1200
742-B Arpa’s obvious problem and Mehrdad’s terrible solution
brute force math number theory
1500
742-A Arpa’s hard exam and Mehrdad’s naive cheat
implementation math number theory
1000
741-E Arpa’s abnormal DNA and Mehrdad’s deep interest
data structures string suffix structures
3400
741-D Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths
data structures dfs and similar trees
2900
741-C Arpa’s overnight party and Mehrdad’s silent entering
constructive algorithms dfs and similar graphs
2600
741-B Arpa's weak amphitheater and Mehrdad's valuable Hoses
dfs and similar dp dsu
1600
741-A Arpa's loud Owf and Mehrdad's evil plan
dfs and similar math
1600
740-B Alyona and flowers
constructive algorithms
1200
740-A Alyona and copybooks
brute force implementation
1300
739-E Gosha is hunting
brute force data structures dp +4
3000
739-D Recover a functional graph
graph matchings
3400
739-C Alyona and towers
data structures
2500
739-B Alyona and a tree
binary search data structures dfs and similar +2
1900
739-A Alyona and mex
constructive algorithms greedy
1700
737-F Dirty plates
constructive algorithms math
3300
737-E Tanya is 5!
graph matchings graphs greedy +1
3300
736-E Chess Championship
constructive algorithms flows greedy +1
2900
736-D Permutations
math matrices
2800
735-E Ostap and Tree
dp trees
2500
735-D Taxes
math number theory
1600
735-C Tennis Championship
combinatorics constructive algorithms greedy +1
1600
735-B Urbanization
greedy number theory sortings
1100
735-A Ostap and Grasshopper
implementation strings
800
734-F Anton and School
bitmasks constructive algorithms implementation +1
2500
734-E Anton and Tree
dfs and similar dp trees
2100
734-D Anton and Chess
implementation
1700
734-C Anton and Making Potions
binary search dp greedy +1
1600
734-B Anton and Digits
brute force greedy implementation +1
800
734-A Anton and Danik
implementation strings
800
733-F Drivers Dissatisfaction
data structures dsu graphs +1
2200
733-E Sleep in Class
constructive algorithms data structures math +1
2400
733-D Kostya the Sculptor
data structures hashing
1600
733-C Epidemic in Monstropolis
constructive algorithms dp greedy +1
1800
733-B Parade
math
1100
733-A Grasshopper And the String
implementation
1000
732-F Tourist Reform
dfs and similar graphs
2300
732-E Sockets
greedy sortings
2100
732-D Exams
binary search greedy sortings
1700
732-C Sanatorium
binary search constructive algorithms greedy +2
1200
732-B Cormen --- The Best Friend Of a Man
dp greedy
1000
732-A Buy a Shovel
brute force constructive algorithms implementation +1
800