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?
27595 / 30735
2
Digits
15665 / 20429
3
Match’s model
1842 / 9593
4
Two circles
5297 / 8646
5
Two factors
1351 / 3493
6
The vouchers
821 / 1299
7
Roman numerals
1822 / 2533
8
Matches
2697 / 4044
9
N-digit numbers
2068 / 3065
10
Gardener
1909 / 2625
11
Big accuracy
2950 / 4275
12
Injured Picture
490 / 821
13
Spider and Fly
985 / 1835
14
Rabbit-failure
1091 / 1479
15
Mouse and corns
2363 / 3226
16
Dragon
1068 / 1692
17
Gardener-painter
2521 / 3228
18
Paint2D
413 / 954
19
Degree of symmetry
4440 / 5284
20
How many times to repeat?
3585 / 5066
21
Corruption
70 / 991
22
"Mirror prime" numbers
1388 / 3005
23
New-year tree
541 / 1168
24
Paint2D-Crack
37 / 175
25
Paint3D
307 / 495