diff --git a/QubeChallenge.rb b/QubeChallenge.rb
new file mode 100644
index 0000000..3b83458
--- /dev/null
+++ b/QubeChallenge.rb
@@ -0,0 +1,42 @@
+require 'csv'
+require 'byebug'
+class QubeChallenge
+    def solution1
+        all_partners = load_csv_data
+        output_array = []
+        CSV.new(open('./input.csv')).each do |row|
+            # row[0] is delivery ID, row[1] is size row[2] id threatre
+            theatre_partners = all_partners.select{|p| p["Theatre"]== row[2]}
+
+            theatre_partners.each_with_index do |tp,index|
+                slab_size = row[1]&.to_i
+                d_id = row[0]
+                size_min,size_max = tp["Size Slab (in GB)"].split("-")
+                minimum_cost = tp["Minimum cost"]&.to_i
+                price = tp["Cost Per GB"]&.to_i
+                total_cost = slab_size * price
+                final_cost = total_cost < minimum_cost ? minimum_cost : total_cost
+                if (size_min.to_i..size_max.to_i).include?(slab_size)
+                    output_array << [d_id,true,tp["Partner ID"],final_cost]
+                    break
+                elsif index == (theatre_partners.size - 1)
+                    output_array << [d_id,false,"",""]
+                end
+            end
+            output_array << [d_id,false,"",""] if theatre_partners.empty?
+        end
+        generate_csv(output_array)
+    end
+
+    def load_csv_data
+        csv = CSV.new(open('./partners.csv'), headers: :first_row, converters: ->(f) { f&.strip })
+        csv =  csv.to_a.map {|row| row.to_hash }
+    end
+
+    def generate_csv(csv_data)
+        CSV.open('output.csv', 'w') do |csv|
+          csv_data.each { |ar| csv << ar }
+        end
+    end
+end
+QubeChallenge.new.solution1
\ No newline at end of file