Merge pull request #11 from Johnmalc/master

update
Merge pull request #12 from Johnmalc/master

UPdate
Merge pull request #13 from Johnmalc/master

Update
Merge pull request #14 from Johnmalc/master

DO NOT merge
V pervom i tretem ya nemnogo izmenila. Nichego sushestvennogo. v tvoem napisala Kommenty dlya tebya.
Merge pull request #15 from AnastasiaStudent/master

Aufgabe1,2 und 3