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# Problem Tags Rating Solved
1106-E Lunar New Year and Red Envelopes
data structures dp
2100
1106-D Lunar New Year and a Wander
data structures dfs and similar graphs +2
1500
1106-C Lunar New Year and Number Division
greedy implementation math +1
900
1106-B Lunar New Year and Food Ordering
data structures implementation
1500
1106-A Lunar New Year and Cross Counting
implementation
800
1105-E Helping Hiasat
bitmasks brute force dp +1
2200
1105-D Kilani and the Game
dfs and similar graphs implementation +1
1900
1105-C Ayoub and Lost Array
combinatorics dp math
1500
1105-B Zuhair and Strings
brute force implementation strings
1100
1105-A Salem and Sticks
brute force implementation
1100
1104-B Game with string
data structures implementation math
1200
1104-A Splitting into digits
constructive algorithms implementation math
800
1103-E Radix sum
fft math number theory
3400
1103-D Professional layer
bitmasks dp
3100
1103-C Johnny Solving
constructive algorithms dfs and similar graphs +1
2700
1103-B Game with modulo
binary search constructive algorithms interactive
2000
1103-A Grid game
constructive algorithms implementation
1400
1102-F Elongated Matrix
binary search bitmasks brute force +2
2000
1102-E Monotonic Renumeration
combinatorics sortings
1700
1102-D Balanced Ternary String
greedy strings
1500
1102-C Doors Breaking and Repairing
games
1200
1102-B Array K-Coloring
greedy sortings
1400
1102-A Integer Sequence Dividing
math
800
1101-G (Zero XOR Subset)-less
math matrices
2300
1101-F Trucks and Cities
binary search dp
2400
1101-E Polycarp's New Job
implementation
1500
1101-D GCD Counting
data structures dfs and similar dp +2
2000
1101-C Division and Union
sortings
1500
1101-B Accordion
greedy implementation
1300
1101-A Minimum Integer
math
1000
1100-F Ivan and Burgers
data structures divide and conquer greedy +1
2500
1100-E Andrew and Taxi
binary search dfs and similar graphs
2200
1100-D Dasha and Chess
constructive algorithms games interactive
2500
1100-C NN and the Optical Illusion
binary search geometry math
1200
1100-B Build a Contest
data structures implementation
1300
1100-A Roman and Browser
implementation
1000
1099-F Cookies
binary search data structures dfs and similar +3
2400
1099-C Postcard
constructive algorithms implementation
1200
1099-B Squares and Segments
binary search constructive algorithms math
1100
1099-A Snowball
implementation
800
1098-F Ж-function
string suffix structures strings
3500
1098-E Fedya the Potter
binary search implementation math +1
3400
1098-D Eels
data structures
2800
1098-C Construct a tree
binary search constructive algorithms dfs and similar +3
2400
1098-B Nice table
brute force constructive algorithms greedy +1
2100
1098-A Sum in the tree
constructive algorithms dfs and similar greedy +1
1600
1097-H Mateusz and an Infinite Sequence
bitmasks brute force dp +1
3400
1097-G Vladislav and a Great Legend
combinatorics dp trees
3000
1097-F Alex and a TV Show
bitmasks combinatorics number theory
2500
1097-E Egor and an RPG game
constructive algorithms greedy
3400