diff --git a/DZ.2 b/DZ.2
new file mode 100644
index 0000000..adde5bf
--- /dev/null
+++ b/DZ.2
@@ -0,0 +1,39 @@
+import math
+import sys
+path1 = r'C:\Users\User\PycharmProjects\pythonProject\Prov.py.lzw'
+path2 = r'C:\Users\User\PycharmProjects\pythonProject\out_fail'
+
+if not (2 <= len(sys.argv) <= 3):
+    print('Usage: ', sys.argv[0], 'input_file')
+outpath = sys.argv[2] if len(sys.argv) == 3 else sys.argv[1] + '.lzw'
+
+with open(sys.argv[1], 'rb') as file:
+    data = file.read()
+
+dictionary = {i:(i,) for i in range(256)}
+sequens = list()
+i = 0
+with open(outpath, 'wb') as file:
+    while i < len(data):
+        if sequens == []:
+            n = len(dictionary)
+        else:
+            n = len(dictionary) + 1
+        nbits = math.ceil(math.log2(n))
+        nbytes = nbits // 8
+        if nbits % 8 != 0:
+            nbytes += 1
+        slice_dan = data[i : i + nbytes]
+        sym = int.from_bytes(slice_dan, 'little')
+        if sym == len(dictionary):
+            ch = len(sequens) - 1 if len(sequens) > 1 else 1
+            new_sequence = sequens + sequens[:ch]
+        else:
+            new_sequence = list(dictionary[sym])
+        file.write(bytearray(new_sequence))
+        if sequens == []:
+            pass
+        else:
+            dictionary[len(dictionary)] = tuple(sequens + new_sequence[-1:])
+        i += nbytes
+        sequens = new_sequence
diff --git a/task1.py b/task1.py
new file mode 100644
index 0000000..5faa170
--- /dev/null
+++ b/task1.py
@@ -0,0 +1,5 @@
+b = input().split(' ')
+sum = 0
+for i in b:
+    sum = sum + float(i)
+print(sum)
diff --git a/task2.py b/task2.py
new file mode 100644
index 0000000..7e0d5b3
--- /dev/null
+++ b/task2.py
@@ -0,0 +1,15 @@
+stroka = input()
+while True:
+    str_sim2 = str()
+    a = ''
+    a = input()
+    if a == '':
+        break
+    sim1, sim2 = a.split('->')[0], a.split('->')[1]
+    for i in stroka:
+        if  i == sim1:
+            str_sim2 = str_sim2 + sim2
+        else:
+            str_sim2 = str_sim2 + i  
+    stroka = str_sim2
+    print(stroka)
diff --git a/task3.py b/task3.py
new file mode 100644
index 0000000..e0e846e
--- /dev/null
+++ b/task3.py
@@ -0,0 +1,6 @@
+c = input().split(' ')
+stroka = str()
+for i in c:
+    m = int(abs(float(i)))
+    stroka = stroka + str(m) + ' '
+print(stroka[:-1])
diff --git a/task4.py b/task4.py
new file mode 100644
index 0000000..066a043
--- /dev/null
+++ b/task4.py
@@ -0,0 +1,5 @@
+a = input().split(' ')
+summa = int()
+for i in a:
+    summa = summa + float(i) ** 2
+print(summa)
diff --git a/task5.py b/task5.py
new file mode 100644
index 0000000..320c0d7
--- /dev/null
+++ b/task5.py
@@ -0,0 +1,12 @@
+alfavit = "abcdefghijklmnopqrstuvwxyz"
+a = input().split(' ')
+kod = int(input())
+b = ''.join(a)
+stroka = ''
+for i in b:
+    index = alfavit.find(i)
+    k = index + kod
+    while k >= len(alfavit):
+        k = k - len(alfavit)
+    stroka = stroka + alfavit[k]
+print(stroka))