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?
20644 / 22863
2
Digits
12059 / 15605
3
Match’s model
1316 / 7233
4
Two circles
4246 / 6885
5
Two factors
1060 / 2661
6
The vouchers
646 / 1014
7
Roman numerals
1429 / 1979
8
Matches
2154 / 3206
9
N-digit numbers
1611 / 2398
10
Gardener
1574 / 2172
11
Big accuracy
2338 / 3312
12
Injured Picture
398 / 672
13
Spider and Fly
774 / 1431
14
Rabbit-failure
885 / 1211
15
Mouse and corns
1869 / 2614
16
Dragon
838 / 1327
17
Gardener-painter
2175 / 2779
18
Paint2D
304 / 718
19
Degree of symmetry
3271 / 3872
20
How many times to repeat?
2941 / 4023
21
Corruption
65 / 758
22
"Mirror prime" numbers
860 / 2340
23
New-year tree
433 / 919
24
Paint2D-Crack
19 / 125
25
Paint3D
231 / 381