Added first exercise from first task from Rusovich Yuriy
added second exercise from first task from Rusovich Yuriy
change cmake for second exercise
Added exrcise 3 from task 1 from Rusovich Yiriy
deleted odd file
deleted bag in inverted rows with empty string
Merge https://github.com/sidorovis/cpp_craft_1013
bug with not inverted head text
set long long for big data
corrected algorithm counting islands
Merge https://github.com/sidorovis/cpp_craft_1013
set input.txt, output.txt
Update main.cpp

deleted special symbols from empty string
Merge pull request #81 from russov/master

deleted bugs from task 1 from Rusovich Yuriy