Problems
Subsequence#2020
Medium · Prefix Sums · Binary Search
Tree#2021
Very easy · Trees · Graphs
Cycles in the graph#2022
Medium · Graphs
Distance to Polygon#2023
Medium · Geometry · Convex Hull
A triangle of maximal area#2024
Hard · Geometry
Complex XOR Game#2025
Very easy · Brute force
LOGO#2026
Easy · Geometry · Brute force
Point and the circle#2027
Very easy · Geometry
y = sin x#2028
Medium · Geometry
Ring#2029
Medium · Geometry
y = cos x#2030
Medium · Geometry
Fibonacci sequence#2031
Very easy · Dynamic programming
y =| sin(2x)|#2032
Medium · Geometry
Minimum number of bills#2033
Very easy · Greedy algorithms
WERTYU#2034
Very easy · Strings · For Beginners
Crypt Kicker#2035
Hard · Strings
Age#2036
Easy · Implementation
Crypt Kicker II#2037
Medium · Strings
URL Comparison#2038
Hard · Strings
Fraction in LATEX#2039
Hard · Strings
Common permutation#2040
Very easy · Strings
The day of the competitors#2041
Hard · Sorting
Monthly and quarterly#2042
Very easy · Math
Quarter#2043
Very easy · Implementation
Month#2044
Very easy · Implementation