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chelpkostya

Olympiad Rating: 1431
Problem rating: 488
Contribution: 0

Country: RU
Occupation: Other
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Problems solved: 152

Equilateral Triangles Half of Octahedron Parking
Again these rooks Oh-matrix Friends Playing
Ordered papers Expanding brackets NRD pair
2020 digit Sum of four New FE
Product of areas Test Tommorow's day
Just sequence Cubical squares Not your business
Lucky numbers Sum of digits 2020 Triangle in Hexagon
Temirlan's cake Numbers ratio Divisibility by 4
2020 Palindromes Squared fours C Sum
Just Easy Sum Triangle in hyperbola Money date
Powers of 6 Square multiples of 24 Area of triangle
2+1 Odd divisors Concetric
Relatively prime with 2020 Random answer Friendly rooks
All such Solutions on the interval Bingo!
Semiperimeter Not fibbo Diameter
Minimizing Fibb Function Sum probability
Arithmetic derivative Gineq 6-sums
Small triangular numbers Sum of Digits U turn
One three-digit number Exactly two roots Cool-divisble numbers
Max Area Five Primes Digital Cubes
Fill the square Binary Sum Factorial Factor
Simple sum Similar polynomials More dominos
!Fancy cubic VNT Many digits
Fractions Four on a circle Simple expression
Math lesson Hold me Positive product of sums
Prime Sets Angle chasing Prime powers
Polynomial without 4 Bools and cows Lin's Octagon
New Cake Sqaure in square Permutational Polynomial
Unfair Game Daniyar's Friends Base4
ADAD Weird equation Odd polynomial
Flip Rational Polynomial 5 instead of 1
Sum of Squares Point O 0,1,2 polynomial
Regular Polygons Sequenta Switchers
Convex triangle Sequence Maximum of Minimum
Reverse Product Tricky polynomial Also palindrome
Zero sequence ADAD (Duplicate) MTMTK System
6 Apart Product of differences Too much
Triangle and Square Viet said Special square
First geometry Discriminant Rational Irrational
Total inversion Fancy meal Pentagon
Polynomial Probability What a function Quadratic
Zeros and Ones Lin's Numbers Pencils
Flights Not constant Cube Cube Square
Poly Tan-Sin Cuboid
D Flags Cyclic Q Powered Numbers
Powered Numbers (Duplicate) Seven eleven Irreducible Fractions
Love Triangle Cyclic Areas These Triangles
Negative roots Revolution Uneven numbers
Cemicirlces Four equal angles Difference of squares
Unordered triplet Fancy integral Probability computer
Almost fixed Divisible sets

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