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?
25957 / 28839
2
Digits
14750 / 19229
3
Match’s model
1744 / 9116
4
Two circles
5137 / 8351
5
Two factors
1302 / 3357
6
The vouchers
792 / 1257
7
Roman numerals
1758 / 2440
8
Matches
2601 / 3886
9
N-digit numbers
1972 / 2925
10
Gardener
1841 / 2541
11
Big accuracy
2861 / 4066
12
Injured Picture
477 / 804
13
Spider and Fly
938 / 1754
14
Rabbit-failure
1059 / 1439
15
Mouse and corns
2298 / 3140
16
Dragon
1041 / 1630
17
Gardener-painter
2464 / 3160
18
Paint2D
390 / 913
19
Degree of symmetry
4190 / 4987
20
How many times to repeat?
3434 / 4847
21
Corruption
70 / 962
22
"Mirror prime" numbers
1277 / 2861
23
New-year tree
530 / 1140
24
Paint2D-Crack
37 / 170
25
Paint3D
293 / 477