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?
29841 / 33306
2
Digits
16885 / 22085
3
Match’s model
2070 / 10461
4
Two circles
5677 / 9294
5
Two factors
1484 / 3834
6
The vouchers
903 / 1431
7
Roman numerals
1964 / 2750
8
Matches
2922 / 4390
9
N-digit numbers
2227 / 3306
10
Gardener
2036 / 2820
11
Big accuracy
3079 / 4553
12
Injured Picture
526 / 871
13
Spider and Fly
1072 / 1981
14
Rabbit-failure
1181 / 1593
15
Mouse and corns
2553 / 3486
16
Dragon
1149 / 1827
17
Gardener-painter
2687 / 3453
18
Paint2D
467 / 1051
19
Degree of symmetry
4836 / 5753
20
How many times to repeat?
3746 / 5392
21
Corruption
81 / 1150
22
"Mirror prime" numbers
1687 / 3393
23
New-year tree
584 / 1280
24
Paint2D-Crack
37 / 187
25
Paint3D
372 / 573