e-olymp

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?
25306 / 28068
2
Digits
14529 / 18947
3
Match’s model
1719 / 8977
4
Two circles
5071 / 8244
5
Two factors
1285 / 3293
6
The vouchers
783 / 1238
7
Roman numerals
1728 / 2402
8
Matches
2554 / 3815
9
N-digit numbers
1956 / 2889
10
Gardener
1821 / 2513
11
Big accuracy
2851 / 4021
12
Injured Picture
472 / 794
13
Spider and Fly
928 / 1732
14
Rabbit-failure
1042 / 1421
15
Mouse and corns
2278 / 3116
16
Dragon
1029 / 1614
17
Gardener-painter
2432 / 3120
18
Paint2D
389 / 904
19
Degree of symmetry
4127 / 4908
20
How many times to repeat?
3409 / 4805
21
Corruption
69 / 939
22
"Mirror prime" numbers
1257 / 2841
23
New-year tree
528 / 1122
24
Paint2D-Crack
37 / 170
25
Paint3D
293 / 476