Problems Playground
Login
Min rating
Max rating
Tag
Reset
# Problem Tags Rating Solved
2078-B Vicious Labyrinth
constructive algorithms graphs greedy +2
1100
2078-A Final Verdict
math
800
2077-G RGB Walking
bitmasks chinese remainder theorem dfs and similar +2
3500
2077-F AND x OR
bitmasks constructive algorithms dp
3300
2077-E Another Folding Strip
combinatorics constructive algorithms data structures +4
2700
2077-D Maximum Polygon
brute force data structures greedy +2
3100
2077-C Binary Subsequence Value Sum
combinatorics data structures dp +3
2300
2077-B Finding OR Sum
bitmasks constructive algorithms implementation +2
1900
2077-A Breach of Faith
constructive algorithms greedy math +1
1500
2075-F Beautiful Sequence Returns
binary search brute force data structures +1
3000
2075-E XOR Matrix
bitmasks combinatorics dp +2
2500
2075-D Equalization
bitmasks brute force dp +2
2000
2075-C Two Colors
binary search combinatorics math
1500
2075-B Array Recoloring
constructive algorithms greedy
1300
2075-A To Zero
greedy math
800
2074-G Game With Triangles: Season 2
dp geometry
2100
2074-F Counting Necessary Nodes
bitmasks divide and conquer greedy +2
2000
2074-E Empty Triangle
geometry interactive probabilities
1600
2074-D Counting Points
brute force data structures geometry +2
1400
2074-C XOR and Triangle
bitmasks brute force geometry +2
1100
2074-B The Third Side
geometry greedy math
800
2074-A Draw a Square
geometry implementation
800
2073-M Can You Reach There?
3300
2073-L Boarding Queue
1300
2073-K Book Sorting
2900
2073-J Gathering Sharks
2000
2073-I Squares on Grid Lines
3100
2073-H Secret Lilies and Roses
interactive
2700
2073-G Corrupted File
2200
2073-F Hold the Star
3500
2073-E Minus Operator
interactive
3300
2073-D Tower of Hanoi
2400
2073-C Cactus Connectivity
2700
2073-B Three-Dimensional Embedding
3500
2073-A Control Towers
1900
2072-G I've Been Flipping Numbers for 300 Years and Calculated the Sum
binary search brute force combinatorics +3
2200
2072-F Goodbye, Banker Life
2-sat bitmasks combinatorics +4
1700
2072-E Do You Love Your Hero and His Two-Hit Multi-Target Attacks?
binary search brute force constructive algorithms +4
1500
2072-D For Wizards, the Exam Is Easy, but I Couldn't Handle It
brute force greedy implementation
1300
2072-C Creating Keys for StORages Has Become My Main Skill
bitmasks constructive algorithms greedy
1200
2072-B Having Been a Treasurer in the Past, I Help Goblins Deceive
combinatorics constructive algorithms strings
900
2072-A New World, New Me, New Array
greedy implementation math
800
2071-F Towering Arrays
binary search data structures
2700
2071-E LeaFall
combinatorics dp probabilities +1
2600
2071-D2 Infinite Sequence (Hard Version)
bitmasks brute force constructive algorithms +4
2500
2071-D1 Infinite Sequence (Easy Version)
bitmasks brute force dp +2
1800
2071-C Trapmigiano Reggiano
constructive algorithms data structures dfs and similar +4
1700
2071-B Perfecto
brute force constructive algorithms greedy +1
1100
2071-A The Play Never Ends
math number theory
800
2070-F Friends and Pizza
bitmasks divide and conquer dp +1
3000