diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 00000000..5c98b428
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,2 @@
+# Default ignored files
+/workspace.xml
\ No newline at end of file
diff --git a/.idea/Python_Algos.iml b/.idea/Python_Algos.iml
new file mode 100644
index 00000000..7c9d48f0
--- /dev/null
+++ b/.idea/Python_Algos.iml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="TestRunnerService">
+    <option name="projectConfiguration" value="pytest" />
+    <option name="PROJECT_TEST_RUNNER" value="pytest" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 00000000..105ce2da
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 00000000..a2e120dc
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 00000000..cd986194
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/Python_Algos.iml" filepath="$PROJECT_DIR$/.idea/Python_Algos.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 00000000..94a25f7f
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git "a/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_1.py" "b/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_1.py"
index 045a8cc9..2e544bee 100644
--- "a/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_1.py"	
+++ "b/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_1.py"	
@@ -16,3 +16,19 @@
 
 Итог: 6 подстрок
 """
+from hashlib import sha1
+
+STR = 'Python3'
+my_set = set()
+
+for first_sym in range(len(STR)):
+    if first_sym == 0:
+        length_sym = len(STR) - 1
+    else:
+        length_sym = len(STR)
+    for last_sym in range(length_sym):
+        if last_sym >= first_sym:
+            substring = sha1(STR[first_sym:last_sym + 1].encode('utf-8')).hexdigest()
+            my_set.add(substring)
+
+print(f'В строке - {STR} - {len(my_set)} подстрок')
diff --git "a/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_2.py" "b/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_2.py"
index 96b7bdec..fe5f65d4 100644
--- "a/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_2.py"	
+++ "b/\320\243\321\200\320\276\320\272 8. \320\237\321\200\320\260\320\272\321\202\320\270\321\207\320\265\321\201\320\272\320\276\320\265 \320\267\320\260\320\264\320\260\320\275\320\270\320\265/task_2.py"	
@@ -8,3 +8,49 @@
 Результат:
 00 11 11 101 010 00 011 011 101 010 00 11 11 1000 1001
 """
+
+from collections import Counter, deque
+
+S = "beep boop beer!"
+# S = "bbbbbbb"
+
+
+def haffman_tree(string):
+    cnt = Counter(string)
+    sort_cnt = deque(sorted(cnt.items(), key=lambda x: x[1]))
+    if len(sort_cnt) > 1:
+        while len(sort_cnt) > 1:
+            weight = sort_cnt[0][1] + sort_cnt[1][1]
+            union = ({0: sort_cnt.popleft()[0], 1: sort_cnt.popleft()[0]}, weight)
+            for i, elem in enumerate(sort_cnt):
+                if elem[1] < weight:
+                    continue
+                sort_cnt.insert(i, union)
+                break
+            else:
+                sort_cnt.append(union)
+    else:
+        # Тут можно немного упростить
+        return {0: None, 1: sort_cnt[0][0]}
+    return sort_cnt[0][0]
+
+
+code_list = {}
+
+
+def crawl_tree(sort_cnt, path=''):
+    if isinstance(sort_cnt, dict):
+        crawl_tree(sort_cnt[0], path=f'{"0"}{path}')
+        crawl_tree(sort_cnt[1], path=f'{"1"}{path}')
+    else:
+        code_list[sort_cnt] = path
+
+
+def coding(string, res=''):
+    crawl_tree(haffman_tree(string))
+    for sym in string:
+        res = f'{res} {code_list[sym]}'
+    return res
+
+
+print('Результат:', coding(S))