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?
30398 / 33912
2
Digits
17217 / 22527
3
Match’s model
2113 / 10662
4
Two circles
5771 / 9450
5
Two factors
1515 / 3906
6
The vouchers
921 / 1454
7
Roman numerals
1988 / 2787
8
Matches
2962 / 4450
9
N-digit numbers
2248 / 3352
10
Gardener
2078 / 2868
11
Big accuracy
3099 / 4590
12
Injured Picture
552 / 898
13
Spider and Fly
1082 / 2001
14
Rabbit-failure
1202 / 1624
15
Mouse and corns
2697 / 3646
16
Dragon
1200 / 1898
17
Gardener-painter
2753 / 3530
18
Paint2D
511 / 1099
19
Degree of symmetry
4923 / 5857
20
How many times to repeat?
3823 / 5515
21
Corruption
93 / 1186
22
"Mirror prime" numbers
1716 / 3432
23
New-year tree
592 / 1298
24
Paint2D-Crack
38 / 192
25
Paint3D
390 / 594