Problems Playground
Login
Min rating
Max rating
Tag
Reset
# Problem Tags Rating Solved
868-C Qualification Rounds
bitmasks brute force constructive algorithms +1
1500
868-B Race Against Time
implementation
1400
868-A Bark to Unlock
brute force implementation strings
900
867-A Between the Offices
implementation
800
865-G Flowers and Chocolate
combinatorics math matrices
3300
865-F Egg Roulette
bitmasks brute force divide and conquer +2
3300
865-E Hex Dyslexia
bitmasks brute force dp +1
3300
865-D Buy Low Sell High
constructive algorithms data structures greedy
2400
865-C Gotta Go Fast
binary search dp
2400
865-B Ordering Pizza
binary search sortings ternary search
1900
865-A Save the problem!
constructive algorithms
1400
864-F Cities Excursions
dfs and similar graphs trees
2700
864-E Fire
dp sortings
2000
864-D Make a Permutation!
greedy implementation math
1500
864-C Bus
greedy implementation math
1500
864-B Polycarp and Letters
brute force implementation strings
1000
864-A Fair Game
implementation sortings
1000
863-G Graphic Settings
3200
863-F Almost Permutation
flows
2200
863-E Turn Off The TV
data structures sortings
2000
863-D Yet Another Array Queries Problem
data structures implementation
1800
863-C 1-2-3
graphs implementation
1800
863-B Kayaking
brute force greedy sortings
1500
863-A Quasi-palindrome
brute force implementation
900
862-F Mahmoud and Ehab and the final stage
data structures strings
2900
862-E Mahmoud and Ehab and the function
binary search data structures sortings
2100
862-D Mahmoud and Ehab and the binary string
binary search divide and conquer interactive
2000
862-C Mahmoud and Ehab and the xor
constructive algorithms
1900
862-B Mahmoud and Ehab and the bipartiteness
dfs and similar graphs trees
1300
862-A Mahmoud and Ehab and the MEX
greedy implementation
1000
860-E Arkady and a Nobody-men
data structures dfs and similar trees
2700
859-G Circle of Numbers
math
3000
859-F Ordering T-Shirts
greedy
2800
859-E Desk Disorder
combinatorics dfs and similar dsu +2
2100
859-D Third Month Insanity
dp probabilities trees
2100
859-C Pie Rules
dp games
1500
859-B Lazy Security Guard
brute force geometry math
1000
859-A Declined Finalists
greedy implementation
800
858-F Wizard's Tour
constructive algorithms dfs and similar graphs
2300
858-E Tests Renumeration
greedy implementation
2200
858-D Polycarp's phone book
data structures implementation sortings
1600
858-C Did you mean...
dp greedy implementation
1500
858-B Which floor?
brute force implementation
1500
858-A k-rounding
brute force math number theory
1100
856-F To Play or not to Play
greedy
3000
856-E Satellites
3100
856-D Masha and Cactus
dp trees
2400
856-C Eleventh Birthday
combinatorics dp math
2400
856-B Similar Words
dp hashing strings +1
2300
856-A Set Theory
brute force constructive algorithms
1600