Problems Playground
Login
Min rating
Max rating
Tag
Reset
# Problem Tags Rating Solved
1607-D Blue-Red Permutation
greedy math sortings
1300
1607-C Minimum Extraction
brute force sortings
1000
1607-B Odd Grasshopper
math
900
1607-A Linear Keyboard
implementation strings
800
1606-F Tree Queries
brute force dp trees
2800
1606-E Arena
combinatorics dp math
2100
1606-D Red-Blue Matrix
brute force constructive algorithms implementation +1
2400
1606-C Banknotes
greedy number theory
1400
1606-B Update Files
greedy implementation math
1100
1606-A AB Balance
strings
900
1605-F PalindORme
combinatorics dp
2900
1605-E Array Equalizer
binary search greedy implementation +4
2400
1605-D Treelabeling
bitmasks constructive algorithms dfs and similar +4
2100
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