all tasks are solving only explicit works

- need to do implicit
- need to do approx
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
	ExplicitGraphModel.py
	ImplicitGraphModel.py
	lab5main.py
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
	ExplicitGraphModel.py
	ImplicitGraphModel.py
	lab5main.py
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
	ImplicitGraphModel.py
	MixedGraphModel.py
Merge branch 'master' of https://github.com/antifrize/NMlab5

Conflicts:
	.idea/workspace.xml
	ImplicitGraphModel.py
	MixedGraphModel.py