diff --git a/README.md b/README.md
index 268f597..a43193d 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,40 @@
-# algorithm-lab
\ No newline at end of file
+
+# algorithm-lab
+1. clone my repository: 
+(if you are working with a console)
+```
+https://github.com/Maria-Sparrow/algorithm-lab.git
+```
+* or download and extract it;
+
+2. open command prompt and switch the directory to **/algorithm-lab**:
+```
+cd algorithm-lab
+```
+* if you decided to download and extract it to, let us say, D:/projects, you would do it like that:
+```
+D:
+```
+```
+cd projects/algorithm-lab
+```
+
+
+3. if you do not have Phyton 3+ installed, you must use the console:
+```
+python main.py
+```
+
+***
+
+this program shows you the results of insertion and merge sorts for each algorithm, it also shows some additional information, such as:
+* time,
+* swap counter,
+* comparison counter.
+
+counters represent the numbers of corresponding operations that occurred during the sorting process.
+
+the list of objects is taken from *basin.csv* file. Each row there represents a new object as a sequence of its properties' values separated by commas. The order is:
+```
+address, volume_of_water, max_number_of_visitors
+```
diff --git a/basin.csv b/basin.csv
new file mode 100644
index 0000000..8a598a1
--- /dev/null
+++ b/basin.csv
@@ -0,0 +1,7 @@
+'Horodotska 60',100,150
+'Horodotska 12',110,151
+'Horodotska 3466',140,155
+'Horodotska 42',120,157
+'Horodotska 124',170,153
+'Horodotska 1',140,159
+'Horodotska 46',167,156
diff --git a/counter.py b/counter.py
new file mode 100644
index 0000000..a127387
--- /dev/null
+++ b/counter.py
@@ -0,0 +1,4 @@
+merge_sort_swap_counter = 0
+merge_sort_compare_counter = 0
+select_swap_counter = 0
+select_compare_counter = 0
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diff --git a/counter_meth.py b/counter_meth.py
new file mode 100644
index 0000000..b364a71
--- /dev/null
+++ b/counter_meth.py
@@ -0,0 +1,13 @@
+from datetime import timedelta
+import counter
+
+
+def print_counter_result(elapsed_time: timedelta, sort_type: str):
+    if sort_type == 'SELECTION':
+        print('counter: ' + str(counter.select_compare_counter))
+        print('swap: ' + str(counter.select_swap_counter))
+    elif sort_type == 'MERGE':
+        print('counter: ' + str(counter.merge_sort_compare_counter))
+        print('swap: ' + str(counter.merge_sort_swap_counter))
+    print('time: ' + str(elapsed_time))
+
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..4223139
--- /dev/null
+++ b/main.py
@@ -0,0 +1,41 @@
+from timeit import default_timer as timer
+from datetime import timedelta
+import sys
+import copy
+import counter_meth
+from sortPool import *
+
+file = "basin.csv"
+if len(sys.argv) != 0:
+    file = sys.argv[0]
+
+    list_of_basins = get_objects_from_csv(file)
+    list_for_selection = copy.deepcopy(list_of_basins)
+    print('-------------------------------------------')
+    start = timer()
+    print('~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~')
+    selection_sort_by_volume(list_for_selection)
+    elapsed_time = timedelta(((timer() - start) * 1000))
+    counter_meth.print_counter_result(elapsed_time, 'SELECTION')
+
+
+    for basin in list_for_selection:
+        print(str(basin))
+    print('--------------------------------------------')
+
+    start = timer()
+    list_of_basins = merge_sort_by_visitors(list_of_basins)
+    elapsed_time = timedelta(((timer() - start) * 1000))
+    counter_meth.print_counter_result(elapsed_time, 'MERGE')
+    print('~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~')
+    for basin in list_of_basins:
+        print(str(basin))
+
+
+
+
+
+
+
+
+
diff --git a/sortPool.py b/sortPool.py
new file mode 100644
index 0000000..d649d84
--- /dev/null
+++ b/sortPool.py
@@ -0,0 +1,70 @@
+import csv
+import swimmingPool
+import counter
+
+file = "basin.csv"
+
+
+def get_objects_from_csv(input_file):
+    csv_file = open(file, newline='')
+    reader = csv.reader(csv_file)
+    list_of_pool = []
+    for row in reader:
+        print(row)
+        new_pool = swimmingPool.SwimmingPool(address=row[0], volume_of_water=int(row[1]),
+                                             max_number_of_visitors=int(row[2]))
+        list_of_pool.append(new_pool)
+    return list_of_pool
+
+
+def selection_sort_by_volume(basin_list):
+    length = len(basin_list)
+
+    for item in range(length):
+        minimum = item #мінім елем
+
+        for iteration in range(item + 1, length):
+            counter.select_compare_counter += 1
+            if basin_list[iteration].volume_of_water > basin_list[minimum].volume_of_water:
+                minimum = iteration
+        counter.select_swap_counter += 1
+        (basin_list[item], basin_list[minimum]) = (basin_list[minimum], basin_list[item])
+
+
+def merge_sort_by_visitors(basin_list, ascending=True):
+    result = []
+    if len(basin_list) == 1:
+        return basin_list
+    middle = len(basin_list) // 2
+
+    visitors_list1 = merge_sort_by_visitors(basin_list[:middle])
+
+    visitors_list2 = merge_sort_by_visitors(basin_list[middle:])
+
+    first_visitor = last_visitor = 0
+
+    counter.merge_sort_compare_counter += 1
+    while first_visitor < len(visitors_list1) and last_visitor < len(visitors_list2):
+
+        counter.merge_sort_compare_counter += 1
+
+        if visitors_list1[first_visitor].max_number_of_visitors < visitors_list2[last_visitor].max_number_of_visitors:
+            counter.merge_sort_swap_counter += 1
+            result.append(visitors_list2[last_visitor])
+            last_visitor = last_visitor + 1
+
+        else:
+            counter.merge_sort_swap_counter += 1
+            result.append(visitors_list1[first_visitor])
+            first_visitor = first_visitor + 1
+
+        counter.merge_sort_compare_counter += 1
+
+    result = result + visitors_list1[first_visitor:]
+
+    result = result + visitors_list2[last_visitor:]
+    if ascending == True:
+        return result
+    else:
+        result.reverse()
+        return result
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diff --git a/swimmingPool.py b/swimmingPool.py
new file mode 100644
index 0000000..198a6cd
--- /dev/null
+++ b/swimmingPool.py
@@ -0,0 +1,15 @@
+class SwimmingPool():
+    def __init__(self, address, volume_of_water, max_number_of_visitors):
+        self.address = address
+        self.volume_of_water = volume_of_water
+        self.max_number_of_visitors = max_number_of_visitors
+
+    def __str__(self):
+        return "address " + self.address + ", volume_of_water " + str(self.volume_of_water) + ", visitors " + str(self.max_number_of_visitors)
+
+    @staticmethod
+    def compare(small, deep, tag="volume_of_water", greater_then=True):
+        if tag =="volume_of_water":
+            return small.volume_of_water > deep.volume_of_water
+        else:
+            return small.max_number_of_visitors > deep.max_number_of_visitors
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