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?
28181 / 31407
2
Digits
16006 / 20905
3
Match’s model
1891 / 9833
4
Two circles
5395 / 8817
5
Two factors
1385 / 3593
6
The vouchers
845 / 1342
7
Roman numerals
1862 / 2596
8
Matches
2769 / 4158
9
N-digit numbers
2119 / 3148
10
Gardener
1941 / 2676
11
Big accuracy
2995 / 4379
12
Injured Picture
505 / 840
13
Spider and Fly
1007 / 1881
14
Rabbit-failure
1125 / 1522
15
Mouse and corns
2405 / 3285
16
Dragon
1091 / 1731
17
Gardener-painter
2568 / 3290
18
Paint2D
424 / 977
19
Degree of symmetry
4525 / 5390
20
How many times to repeat?
3630 / 5175
21
Corruption
71 / 1029
22
"Mirror prime" numbers
1468 / 3118
23
New-year tree
565 / 1226
24
Paint2D-Crack
37 / 181
25
Paint3D
318 / 511