diff --git a/labs02/task08.py b/labs02/task08.py
index e5eef9a..654b867 100644
--- a/labs02/task08.py
+++ b/labs02/task08.py
@@ -7,7 +7,15 @@ przez 3 lub 5 mniejszych niż n.
 """
 
 def sum_div35(n):
-
+  
+    if n == 0:
+        return 0
+    else:
+        suma=0
+        for i in range(n):
+          if ((i%3) == 0) or ((i%5) == 0):
+             suma =suma + i
+        return suma
 
 def tests(f):
     inputs = [[10], [100], [3845]]
diff --git a/labs02/task09.py b/labs02/task09.py
index 9045054..525733f 100644
--- a/labs02/task09.py
+++ b/labs02/task09.py
@@ -7,10 +7,18 @@ na podobnie wyglądające cyfry: 'e' na '3', 'l' na '1', 'o' na '0', 't' na '7'.
 Np. leet('leet') powinno zwrócić '1337'.
 """
 
-
 def leet_speak(text):
-    pass
-
+  
+       for i in range(len(text)):
+            if ((text[i]) == 'e'):
+                text = text[:i] + '3' + text[i + 1:]
+            elif ((text[i]) == 'l'):
+                text = text[:i] + '1' + text[i + 1:]
+            elif ((text[i]) == 'o'):
+                text = text[:i] + '0' + text[i + 1:]
+            elif ((text[i]) == 't'):
+                text = text[:i] + '7' + text[i + 1:]
+       return text
 
 def tests(f):
     inputs = [['leet'], ['do not want']]
diff --git a/labs02/task10.py b/labs02/task10.py
index 58d40d2..2dcfcb1 100644
--- a/labs02/task10.py
+++ b/labs02/task10.py
@@ -9,8 +9,12 @@ na wielką. Np. pokemon_speak('pokemon') powinno zwrócić 'PoKeMoN'.
 
 
 def pokemon_speak(text):
-    pass
+  
+    for i in range(len(text)):
+        if ((i % 2) == 0):
+            text = text[:i] + (text[i].upper()) + text[i + 1:]
 
+    return text
 
 def tests(f):
     inputs = [['pokemon'], ['do not want'], ['POKEMON']]
diff --git a/labs02/task11.py b/labs02/task11.py
index 7d36767..4bc74a7 100644
--- a/labs02/task11.py
+++ b/labs02/task11.py
@@ -9,7 +9,24 @@ Oba napisy będą składać się wyłacznie z małych liter.
 """
 
 def common_chars(string1, string2):
-    pass
+    n= string1
+    m= string2
+    li = []
+    if len(n) >= len(m):
+        for i in range(len(n)):
+            for j in range(len(m)):
+                if n[i] == m[j]:
+                    li.append(n[i])
+
+    else:
+        for i in range(len(m)):
+            for j in range(len(n)):
+                if m[i] == n[j]:
+                    li.append(m[i])
+    li = list(set(li))
+    li.remove(' ')
+    li.sort()
+    return li
 
 
 def tests(f):
diff --git a/labs04/cw5.py b/labs04/cw5.py
new file mode 100644
index 0000000..42d3b2d
--- /dev/null
+++ b/labs04/cw5.py
@@ -0,0 +1,17 @@
+import glob
+
+sciezka = "/scores/model.iter*.npz.bleu"
+
+for file in glob.glob(sciezka):
+    with open(file, 'r') as plik:
+        for line in plik.readlines():
+            bleu = float(line[line.find("=")+ 1:line.find(",")])
+            if bleu >0:
+                max = bleu
+                maxi = file
+
+            plik.close()
+
+print ( maxi )
+
+