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?
21994 / 24345
2
Digits
12575 / 16337
3
Match’s model
1366 / 7599
4
Two circles
4362 / 7155
5
Two factors
1087 / 2741
6
The vouchers
658 / 1040
7
Roman numerals
1470 / 2045
8
Matches
2201 / 3296
9
N-digit numbers
1646 / 2446
10
Gardener
1605 / 2215
11
Big accuracy
2465 / 3443
12
Injured Picture
407 / 698
13
Spider and Fly
792 / 1474
14
Rabbit-failure
917 / 1255
15
Mouse and corns
1910 / 2665
16
Dragon
872 / 1375
17
Gardener-painter
2215 / 2821
18
Paint2D
310 / 747
19
Degree of symmetry
3422 / 4064
20
How many times to repeat?
3016 / 4148
21
Corruption
66 / 795
22
"Mirror prime" numbers
904 / 2402
23
New-year tree
447 / 952
24
Paint2D-Crack
19 / 126
25
Paint3D
234 / 385