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?
34150 / 38240
2
Digits
19161 / 25123
3
Match’s model
2391 / 11794
4
Two circles
6291 / 10312
5
Two factors
1662 / 4355
6
The vouchers
998 / 1584
7
Roman numerals
2167 / 3060
8
Matches
3316 / 5000
9
N-digit numbers
2414 / 3637
10
Gardener
2299 / 3170
11
Big accuracy
3259 / 4936
12
Injured Picture
611 / 976
13
Spider and Fly
1184 / 2182
14
Rabbit-failure
1299 / 1738
15
Mouse and corns
2939 / 3944
16
Dragon
1284 / 2061
17
Gardener-painter
2894 / 3715
18
Paint2D
554 / 1191
19
Degree of symmetry
5381 / 6418
20
How many times to repeat?
4112 / 6013
21
Corruption
93 / 1275
22
"Mirror prime" numbers
1908 / 3699
23
New-year tree
651 / 1407
24
Paint2D-Crack
38 / 209
25
Paint3D
428 / 647