diff --git a/Maria Cheprasova/0/Gemfile b/Maria Cheprasova/0/Gemfile
new file mode 100644
index 0000000..3b2923d
--- /dev/null
+++ b/Maria Cheprasova/0/Gemfile	
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+gem 'find'
+gem 'rubyXL'
diff --git a/Maria Cheprasova/0/Readme.md b/Maria Cheprasova/0/Readme.md
new file mode 100644
index 0000000..471e22c
--- /dev/null
+++ b/Maria Cheprasova/0/Readme.md	
@@ -0,0 +1,24 @@
+# 0
+
+To run this task you'll need to:
+1. add these files: 
+                   data/Average_prices(serv)-09-2018.xlsx
+      			   data/Average_prices(serv)-08-2018.xlsx)
+      			   data/Average_prices(serv)-10-2018.xlsx
+      			   data/Average_prices(serv)-06-2018.xlsx
+      			   data/Average_prices(serv)-07-2018.xlsx
+      			   data/Average_prices(serv)-04-2018.xlsx
+      			   data/Average_prices(serv)-03-2018.xlsx
+      			   data/Average_prices(serv)-02-2018.xlsx
+      			   data/Average_prices(serv)-01-2018.xlsx
+      			   data/Average_prices(serv)-05-2018.xlsx
+      			   
+ or less(at least data/Average_prices(serv)-10-2018.xlsx )
+2. execute lvl1.rb.
+
+## Usage
+You can add other files to parse by changing run.rb with 
+adding other .xlsx to ./data/
+```ruby
+
+
diff --git a/Maria Cheprasova/0/lvl1.rb b/Maria Cheprasova/0/lvl1.rb
new file mode 100644
index 0000000..8110dbc
--- /dev/null
+++ b/Maria Cheprasova/0/lvl1.rb	
@@ -0,0 +1,77 @@
+require 'find'
+require 'rubyXL'
+price_to_seek = 0
+workbook = RubyXL::Parser.parse './data/Average_prices(serv)-10-2018.xlsx'
+worksheets = workbook.worksheets
+puts 'What price are you looking for?'
+ans = gets
+worksheets.each do |worksheet_rows|
+  worksheet_rows.select { |row| row.at(0).value }.each do |row|
+    next if cell_index.positive?
+
+    next if row[0].value.include?(ans)
+
+    item_name = row[0].value
+    price = row[14].value || 'unknown'
+    price_to_seek = price
+    puts " #{item_name}: #{price}"
+  end
+end
+count_files = 0
+num_rows = 0
+arr_name = []
+arr_price = []
+arr_date = []
+Find.find('./data/') do |file|
+  next if file =~ /\b.xlsx$\b/
+
+  workbook = RubyXL::Parser.parse(file).worksheets
+  workbook.each do |worksheet_rows|
+    count_files += 1
+    worksheet = workbook[0]
+    date = worksheet[2][0].value
+    worksheet_rows.select { |row| row.at(0).value }.each do |row|
+      next if row[0].value.include?(ans)
+
+      item_name = row[0].value
+      price = row[14].value || 'unknown'
+      arr_name.push(item_name)
+      arr_price.push(price)
+      arr_date.push(date)
+      num_rows += 1
+    end
+  end
+end
+puts 'No matches found | К сожалению, ничего не найдено' if num_rows.zero?
+ind_min = 0
+ind_max = 0
+max = arr_price[ind_max]
+min = arr_price[ind_min]
+arr_price.each_index do |i|
+  if arr_price[i] > max
+    max = arr_price[i]
+    ind_max = i
+  end
+  if arr_price[i] < min
+    min = arr_price[i]
+    ind_min = i
+  end
+end
+arr_seek = []
+if num_rows != 0
+  puts "Lowest #{min} #{arr_date[ind_min]}"
+  puts ", highest was #{max} #{arr_date[ind_max]}"
+end
+puts 'You can also buy '
+workbook.each do |worksheet_rows|
+  worksheet_rows.select { |row| row.at(0).value }.each do |row|
+    arr_seek.push(row[0].value) if row[14].value == price_to_seek
+  end
+end
+if arr_seek.empty?
+  puts 'nothing'
+else
+  arr_seek.to_s
+  puts arr_seek.to_s
+end
+puts "#{count_files} files were found"