e-olymp
favorite We need a little bit of your help to keep things running, click on this banner to learn more

Problems

Complexity
All Problems Very simple Simple Average Difficult Very difficult
Classification
All Problems Combinatorics Comforting task Dynamic programming Game theory Graph theory Long arithmetic Modeling Number theory Probability Test problem Others...
1
Simple problem
38822 / 43506
2
Digits
21838 / 28393
3
Match’s model
2780 / 13394
4
Two circles
7137 / 11581
5
Two factors
1854 / 4868
6
The vouchers
1114 / 1760
7
Roman numerals
2410 / 3408
8
Matches
3698 / 5547
9
N-digit numbers
2668 / 4039
10
Gardener
2551 / 3501
11
Big accuracy
3472 / 5398
12
Injured Picture
704 / 1109
13
Spider and Fly
1328 / 2446
14
Rabbit-failure
1429 / 1907
15
Mouse and corns
3319 / 4475
16
Dragon
1456 / 2296
17
Gardener-painter
3136 / 4063
18
Paint2D
656 / 1374
19
Degree of symmetry
5999 / 7174
20
How many times to repeat?
4500 / 6597
21
Corruption
94 / 1450
22
"Mirror prime" numbers
2254 / 4174
23
New-year tree
703 / 1547
24
Paint2D-Crack
38 / 242
25
Paint3D
504 / 758