Problems Playground
Login
Min rating
Max rating
Tag
Reset
# Problem Tags Rating Solved
1515-I Phoenix and Diamonds
binary search data structures sortings
3400
1515-H Phoenix and Bits
bitmasks brute force data structures +1
3500
1515-G Phoenix and Odometers
dfs and similar graphs math +1
2700
1515-F Phoenix and Earthquake
constructive algorithms dfs and similar dsu +3
2600
1515-E Phoenix and Computers
combinatorics dp math
2200
1515-D Phoenix and Socks
greedy sortings two pointers
1500
1515-C Phoenix and Towers
constructive algorithms data structures greedy
1400
1515-B Phoenix and Puzzle
brute force geometry math +1
1000
1515-A Phoenix and Gold
constructive algorithms greedy math
800
1514-E Baby Ehab's Hyper Apartment
binary search graphs interactive +2
2700
1514-D Cut and Stick
binary search data structures greedy +2
2000
1514-C Product 1 Modulo N
greedy number theory
1600
1514-B AND 0, Sum Big
bitmasks combinatorics math
1200
1514-A Perfectly Imperfect Array
math number theory
800
1513-F Swapping Problem
brute force constructive algorithms data structures +1
2500
1513-E Cost Equilibrium
combinatorics constructive algorithms math +1
2300
1513-D GCD and MST
constructive algorithms dsu graphs +3
2000
1513-C Add One
dp matrices
1600
1513-B AND Sequences
bitmasks combinatorics constructive algorithms +1
1400
1513-A Array and Peaks
constructive algorithms implementation
800
1512-G Short Task
brute force dp math +1
1700
1512-F Education
brute force dp greedy +1
1900
1512-E Permutation by Sum
brute force greedy math
1600
1512-D Corrupted Array
constructive algorithms data structures greedy
1200
1512-C A-B Palindrome
constructive algorithms implementation strings
1200
1512-B Almost Rectangle
implementation
800
1512-A Spy Detected!
brute force implementation
800
1511-G Chips on a Board
bitmasks brute force data structures +3
2700
1511-F Chainword
brute force data structures dp +3
2700
1511-E Colorings and Dominoes
combinatorics dp greedy +1
2100
1511-D Min Cost String
brute force constructive algorithms graphs +2
1600
1511-C Yet Another Card Deck
brute force data structures implementation +1
1100
1511-B GCD Length
constructive algorithms math number theory
1100
1511-A Review Site
greedy
800
1510-K King's Task
brute force graphs implementation
1200
1510-J Japanese Game
constructive algorithms math
2700
1510-I Is It Rated?
greedy interactive math +1
2700
1510-H Hard Optimization
dp
3200
1510-G Guide
2100
1510-F Fiber Shape
2800
1510-E Equilibrium Point /\textbackslash/\textbackslash
2700
1510-D Digits
dp math number theory
2100
1510-C Cactus Not Enough
dfs and similar graph matchings graphs
2900
1510-B Button Lock
flows graph matchings graphs
2600
1510-A ASCII Automata Art
3100
1509-C The Sports Festival
dp greedy
1800
1509-B TMT Document
greedy
1100
1509-A Average Height
constructive algorithms
800
1508-F Optimal Encoding
brute force data structures
3500
1508-E Tree Calendar
brute force constructive algorithms data structures +3
3100