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# Problem Tags Rating Solved
1605-C Dominant Character
brute force greedy implementation +1
1400
1605-B Reverse Sort
greedy sortings
1000
1605-A A.M. Deviation
math number theory
800
1604-B XOR Specia-LIS-t
1100
1604-A Era
greedy
800
1603-F October 18, 2017
combinatorics dp implementation +1
2700
1603-E A Perfect Problem
combinatorics dp math
3200
1603-D Artistic Partition
divide and conquer dp number theory
3000
1603-C Extreme Extension
dp greedy math +1
2300
1603-B Moderate Modular Mode
constructive algorithms math number theory
1600
1603-A Di-visible Confusion
constructive algorithms math number theory
1300
1602-B Divine Array
constructive algorithms implementation
1100
1602-A Two Subsequences
implementation
800
1601-F Two Sorts
binary search dfs and similar math +1
3400
1601-E Phys Ed Online
data structures dp greedy
2900
1601-D Difficult Mountain
data structures dp greedy +1
2700
1601-C Optimal Insertion
data structures divide and conquer dp +2
2300
1601-B Frog Traveler
data structures dfs and similar dp +3
1900
1601-A Array Elimination
bitmasks greedy math +1
1300
1600-J Robot Factory
bitmasks dfs and similar
1400
1600-F Party Organization
brute force math probabilities
2300
1600-E Array Game
games greedy two pointers
1900
1599-J Bob's Beautiful Array
bitmasks brute force greedy
2600
1599-I Desert
data structures graphs
2700
1599-H Hidden Fortress
interactive math
2100
1599-G Shortest path
brute force geometry math +1
2700
1599-F Mars
hashing
2700
1599-E Two Arrays
data structures matrices
3200
1599-D Bubble Popping
3200
1599-C Bubble Strike
combinatorics math probabilities +1
2000
1599-B Restaurant Game
3100
1599-A Weights
constructive algorithms greedy two pointers
2600
1598-G The Sum of Good Numbers
hashing math string suffix structures +1
3200
1598-F RBS
binary search bitmasks brute force +2
2400
1598-E Staircases
brute force combinatorics data structures +4
2100
1598-D Training Session
combinatorics data structures geometry +2
1700
1598-C Delete Two Elements
data structures dp implementation +2
1200
1598-B Groups
brute force implementation
1000
1598-A Computer Game
brute force dfs and similar dp +1
800
1594-F Ideal Farm
constructive algorithms math
2400
1594-E2 Rubik's Cube Coloring (hard version)
brute force dp implementation +2
2300
1594-E1 Rubik's Cube Coloring (easy version)
combinatorics math
1300
1594-D The Number of Imposters
constructive algorithms dfs and similar dp +2
1700
1594-C Make Them Equal
brute force greedy math +1
1200
1594-B Special Numbers
bitmasks math
1100
1594-A Consecutive Sum Riddle
math
800
1593-G Changing Brackets
constructive algorithms data structures dp +1
2200
1593-F Red-Black Number
dfs and similar dp implementation +2
2100
1593-E Gardener and Tree
brute force data structures dfs and similar +3
1600
1593-D2 Half of Same
brute force math number theory
1900