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Problems
Complexity
All Problems
Very simple
Simple
Average
Difficult
Very difficult
Classification
All Problems
---topological-sort-
---traveling-salesman-problem-
-three-
2-sat
algorithms-on-strings
articulation-point
backtracking
beginners
bellman-ford-algorithm
binary-search
bitwise-operators
breadth-first-search
bridges
calculation-system
catalan-numbers
clique
combinatorics
connected-components
depth-first-search
dijkstra-algorithm
Others...
---topological-sort-
---traveling-salesman-problem-
-three-
2-sat
algorithms-on-strings
articulation-point
backtracking
beginners
bellman-ford-algorithm
binary-search
bitwise-operators
breadth-first-search
bridges
calculation-system
catalan-numbers
clique
combinatorics
connected-components
depth-first-search
dijkstra-algorithm
diophantine-equations
dynamic-programming
euclid-extended-algorithm
euler-cycle
fenwick-tree
fibonacci-numbers
floyd-warshall-algorithm
full-search
fundamental-set-of-cycles
game-theory
gcd-lcm
geometry
graph-planarity
graph-theory
graphs
greedy-algorithm
if-then
line-program
long-arithmetic
matrix
maximum-flow
minimal-spanning-tree
modeling
number-theory
probability
problems-on-intervals
recursion
sequences
simple-mathematics
sort-and-sequence
three
topological-sort
traveling-salesman-problem
tricky-problem
two-dimensional-arrays
search
1
Simple problem
50473 / 56363
2
Digits
29170 / 36977
3
Match’s model
3757 / 17352
4
Two circles
8848 / 14318
5
Two factors
2263 / 6011
6
The vouchers
1411 / 2233
7
Roman numerals
3166 / 4517
8
Matches
4662 / 6938
9
N-digit numbers
3396 / 5100
10
Gardener
3278 / 4493
11
Big accuracy
4004 / 6615
12
Injured Picture
887 / 1339
13
Spider and Fly
1607 / 2933
14
Rabbit-failure
1828 / 2440
15
Mouse and corns
4245 / 5516
16
Dragon
1781 / 2818
17
Gardener-painter
4109 / 5270
18
Paint2D
819 / 1690
19
Degree of symmetry
7488 / 8845
20
How many times to repeat?
5561 / 8319
21
Corruption
179 / 1804
22
"Mirror prime" numbers
2987 / 5221
23
New-year tree
933 / 2008
24
Paint2D-Crack
63 / 337
25
Paint3D
638 / 940
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