2020 digit 
200 
526 
Algebra,
Digits

Fancy limit 
400 
31 
Algebra,
Sequences

Test 
100 
900 

Daniyar's Friends 
300 
28 

Rotating Hexagon 
600 
3 
Geometry,
Combinatorics

Inverse Sum in Triangle 
500 
11 
Geometry

Ohmatrix 
300 
151 
Algebra,
LinearAlgebra,
Matrices

Air MF 
500 
6 
Combinatorics

Sum of four 
100 
444 
Combinatorics,
Digits

Product of differences 
300 
125 
Algebra,
Inequalities

Special square 
500 
56 
NumberTheory,
Squares

Administrative function 
900 
9 

Money date 
100 
337 
Combinatorics,
Probabilities

Pencils 
400 
7 
Combinatorics

Viet said 
500 
110 
NumberTheory

Lin does shopping 
200 
30 
Algebra,
NumberTheory

C Sum 
300 
124 
Algebra,
Combinatorics,
Formulas

Relatively prime with 2020 
200 
244 
NumberTheory,
PrimeNumbers

Permutational Polynomial 
500 
33 
Algebra

Lin the Racoon's Debut 
600 
18 
Combinatorics,
Raccoon

Odd divisors 
300 
91 
NumberTheory,
Divisors

Convex triangle 
400 
39 
Geometry,
Combinatorics

Positive product of sums 
300 
75 
Algebra,
Equations,
NumberTheory

Powers of 6 
500 
40 
Numbertheory,
Equations

Seven eleven 
200 
64 
Algebra

Similar polynomials 
500 
53 
Algebra,
Polynomials

Interesting functions 
600 
12 
NumberTheory

All such 
400 
68 
NumberTheory,
Equations

Polynomial without 4 
400 
43 
Algebra,
Polynomials

Tricky sequence 
500 
30 
NumberTheory,
Algebra,
Sequences

Divisibility by 4 
200 
236 
NumberTheory,
Digits

P1 
300 
0 

Triangle in hyperbola 
400 
63 
Algebra,
Geometry,
Coordinates

Nice polynomial 
700 
7 
Algebra

First geometry 
400 
61 
Geometry,
Circles,
Tangents

Many digits 
400 
111 
Algebra

x[x] 
400 
58 
NumberTheory,
FloorFunction

335577 
500 
35 
NumberTheory,
Powers

Teleporting button 
300 
18 
Combinatorics,
Probabilities

Simple sum 
300 
31 
Algebra,
Sums

2020 Palindromes 
100 
396 
Combinatorics,
Palindromes

Progressive sequence 
500 
18 
Algebra,
NumberTheory,
Sequences

Naruto cubed 
300 
0 

Binary polindromes 
300 
8 

Right Square 
300 
0 

What a function 
400 
38 
Algebra,
Functions

Tricky polynomial 
600 
47 
Algebra,
Polynomials,
ComplexNumbers

Friendly Team 
400 
12 
Combinatorics

Fancy polynomial 
800 
20 
Algebra,
Polynomials

Odd factors 
500 
27 

!Fancy sequence 
600 
8 
Combinatorics,
NumberTheory

Almost squared numbers 
300 
49 
NumberTheory

These Triangles 
300 
22 
Geometry,
Combinatorics

Just sequence 
300 
152 
Algebra,
Sequences

P5 
300 
0 

Bingo! 
200 
162 
Combinatorics,
Probabilities

Exactly two roots 
400 
50 
NumberTheory,
Equations

Friendly rooks 
200 
167 
Combinatorics,
Chess

Where is my husband 
500 
23 
Combinatorics,
TrueFalse

Lin Jumper 
500 
15 
Combinatorics

Prime powers 
400 
38 

Unfair Game 
400 
31 
Combinatorics

Sqaure in square 
600 
39 
Geometry,
Squares

Orthocenter 
600 
12 
Geometry,
Circles,
Tangents

Bools and cows 
200 
165 
Random,
Combinatorics

5th power equation 
500 
63 
Algebra,
Equations

Zero sequence 
200 
74 
Algebra,
Sequences

Obtuser 
400 
19 
Combinatorics,
Geometry

Lin's Octagon 
300 
45 
Combinatorics

Arithmetic derivative 
500 
42 
NumberTheory,
Functions

Tricky 
400 
61 
NumberTheory

Squared fours 
200 
209 
NumberTheory,
Algebra

Circled 
700 
13 
Geometry,
Combinatorics

NRD pair 
200 
97 
NumberTheory,
PrimeNumbers

Switchers 
400 
44 
Combinatorics,
Sets

Reverse Product 
400 
36 
Combinatorics,
NumberTheory

MTMTK System 
400 
21 
Algebra,
Equations

One threedigit number 
200 
264 
Algebra,
Inequalities

Total inversion 
500 
31 
Combinatorics,
Geometry

Concetric 
200 
67 
Geometry

Cyclic Areas 
300 
28 
Geometry,
Areas

Square multiples of 24 
200 
232 

Sharp inequality 
500 
10 
Algebra,
Inequalities

!Fancy grid 
700 
9 
Combinatorics,
Graphs

More dominos 
400 
31 
Combinatorics

Angle chasing 
300 
135 
Geometry,
AngleChasing

VNT 
500 
97 
NumberTheory,
LTE

Simple expression 
300 
84 
Algebra,
Combinatorics

Equilateral Triangles 
200 
218 
Combinatorics,
Grids

Excirlce 
400 
3 
Geometry

Semiperimeter 
200 
42 
Geometry

Tommorow's day 
100 
671 
Algebra,
Digits

Rational Irrational 
300 
34 
Algebra,
NumberTheory

2+1 
200 
260 
Algebra,
Arithmetics

Cubical squares 
100 
646 
Algebra,
Exponents

Powered Numbers (Duplicate) 
300 
51 
Algebra,
NumberTheory

Also palindrome 
400 
46 
Digits

Fractions 
300 
118 
Algebra

Monochromatics 
400 
6 
Combinatorics,
Graphs

Zeros and Ones 
300 
25 
Combinatorics

Gineq 
300 
51 
Geometry

Number Coloring 
400 
22 
Combinatorics

TanSin 
500 
39 
Geometry,
Trigonometry

Big set 
400 
15 
Combinatorics

ADAD (Duplicate) 
400 
40 
Geometry,
Circles

Max Area 
300 
39 
Geometry

Love Triangle 
400 
6 
Combinatorics

Four equal angles 
200 
75 
Geometry

New Cake 
400 
27 
Geometry

Digital Cubes 
100 
97 
Algebra,
Digits

Numbers ratio 
100 
613 
Algebra,
Arithmetics

U turn 
200 
150 
Algebra,
NumberTheory,
Digits

Sequenta 
300 
69 
Algebra,
Sequences

Sum of Squares 
500 
24 
Geometry

Fancy meal 
300 
76 

Again these rooks 
600 
58 
Combinatorics,
Boards

Subsets Collection 
600 
27 
Combinatorics,
Sets

Expanding brackets 
300 
148 
Algebra,
Polynomials

Difference of squares 
200 
51 
Combinatorics,
NumberTheory

Fancy integral 
700 
32 
Algebra,
Sums,
Integrals

Simple Altai 
400 
19 
NumberTheory

Hold me 
500 
20 
Algebra

Area of triangle 
200 
205 
Geometry,
Squares,
Areas

Four on a circle 
400 
43 
Geometry,
Circles

Base4 
300 
33 
NumberTheory

Small triangular numbers 
200 
137 
Algebra,
NumberTheory

Powered Numbers 
300 
51 
Algebra,
NumberTheory

Rational Polynomial 
400 
25 
Algebra,
Polynomials

Random numbers 
400 
17 
Algebra,
Combinatorics

Sum of Digits 
200 
73 
NumberTheory,
Digits

Integer sequence 
400 
13 
Algebra,
Sequences

Uneven numbers 
100 
144 
NumberTheory

Solutions on the interval 
300 
60 
Algebra,
Equations

0,1,2 polynomial 
400 
20 
Combinatorics,
Algebra

Random answer 
100 
476 
Random

Divisible sets 
300 
6 
Combinatorics

Irreducible Fractions 
200 
87 
NumberTheory

Probability computer 
300 
37 
Combinatorics

Smallest fraction 
300 
27 
Algebra,
NumberTheory

Polynomial Probability 
600 
27 

Cemicirlces 
300 
21 
Geometry,
Areas

Negative roots 
300 
36 
Algebra

Cooldivisble numbers 
300 
69 
NumberTheory,
Digits

Fancy point 
500 
11 
Geometry

Fill the square 
400 
16 
Combinatorics,
Algebra

Sum probability 
300 
83 
Combinatorics,
Algebra,
Probablilities

Sharingan 
500 
11 
Geometry

Small triangle 
600 
15 
Geometry,
Areas

Just Easy Sum 
100 
154 
Algebra

Concatenate 
500 
15 
NumberTheory

Almost fixed 
400 
14 
Combinatorics,
Algebra

Point O 
400 
98 
Geometry

Diameter 
400 
54 
Geometry,
Perpendiculars

6sums 
100 
125 
Algebra

Not fibbo 
300 
57 
Algebra,
Sequences

Sum of digits 2020 
200 
153 
NumberTheory,
Digits

Interesting permutations 
600 
6 
NumberTheory

Math lesson 
400 
41 
NumberTheory,
Combinatorics

Cube Cube Square 
300 
28 
Algebra,
NumberTheory

Binary Sum 
500 
27 
NumberTheory,
Algebra

Function 
300 
199 
Algebra,
FunctionalEquations

Temirlan's cake 
100 
763 
Algebra,
Arithmetics

!Fancy cubic 
300 
68 
Algebra,
NumberTheory

Odd polynomial 
400 
103 
Algebra,
Polynomials

Lucky numbers 
100 
156 
Digits,
Algebra

Smallest degree 
400 
10 
Algebra,
Polynomials

Soccer Game 
500 
11 
Combinatorics

Five Primes 
100 
148 
NumberTheory

Hexagonial 
300 
14 
Geometry,
Hexagons

ADAD 
400 
37 
Geometry,
Circles

Functional Eq 
700 
16 
Algebra,
FunctionalEquations

!Fancy polygon 
400 
38 
Geometry,
3D

Cyclic Q 
600 
16 
Geometry

Not constant 
300 
28 
Algebra,
NumberTheory

Mathrix 
600 
5 
Algebra,
NumberTheory,
Matrices

Quadratic Sets 
400 
9 
Combinatorics,
Sets,
Algebra

Independence 
300 
10 
Combinatorics,
Probabilities

Triangle and Square 
200 
66 
Geometry

Quadratic 
300 
49 
Algebra,
NumberTheory

5 instead of 1 
200 
183 

Factorial Factor 
200 
63 
NumberTheory,
Combinatorics

Weird equation 
200 
204 
Algebra,
Polynomials

New FE 
300 
50 
FunctionalEquations

Maximum of Minimum 
500 
27 
Algebra,
Inequalities

Revolution 
300 
22 
Combinatorics

Regular Polygons 
200 
53 
Geometry,
Combinatorics

Rooks 
600 
16 
Combinatorics

School Clubs 
500 
3 
Combinatorics

Minimizing Fibb 
400 
121 
Algebra,
Sequences

Poly 
600 
10 
Algebra

Infinite game 
500 
42 
Combinatorics,
Games

Pentagon 
500 
17 
Geometry,
Combinatorics,
Pentagons

Flights 
500 
9 
Combinatorics,
Graphs

Cuboid 
300 
27 
NumberTheory

Sequence 
300 
46 
NumberTheory

Checkboard 
600 
3 
Combinatorics

MathForces Store 
500 
32 
Combinatorics

Prime Sets 
500 
8 
Combinatorics,
NumberTheory

!Fancy FE 
500 
9 
Algebra,
Polynomials

Flip 
200 
65 
Algebra,
NumberTheory,
Digits

Not your business 
200 
190 
Geometry,
Tangents

Lin's Game 
400 
9 
Combinatorics,
Games

Chords 
300 
12 
Geometry,
Circles

Smallest number 
600 
244 
Algebra

Unordered triplet 
300 
52 
Algebra,
NumberTheory

Half of Octahedron 
400 
123 
Combinatorics,
Graphs

D Flags 
200 
74 
WebSearch

Too much 
600 
27 
Algebra,
Equations

Novirus 
300 
82 
Combinatorics,
Graphs

Discriminant 
400 
34 
Algebra,
Polynomials

Nice Integer 
400 
5 
NumberTheory,
Algebra,
Polynomials

Half Integers 
500 
2 
Combinatorics,
Geometry

Parking 
300 
190 
Combinatorics

Weird games 
500 
20 
Combinatorics

6 Apart 
500 
88 
Geometry,
3D

Product of areas 
300 
42 
Geometry

Good Order 
600 
3 
Algebra,
NumberTheory

Ordered papers 
300 
34 
Combinatorics

Friends Playing 
600 
18 
Combinatorics

Triangle in Hexagon 
200 
58 
Geometry,
Probabilities

Lin's Numbers 
400 
32 
NumberTheory,
Algebra

Magic Ruler 
500 
7 
Geometry,
Combinatorics

Equiangular Hexagon 
400 
11 
