diff --git a/homeworks/05_Vladimir_Aleksiev/rs.py b/homeworks/05_Vladimir_Aleksiev/rs.py
new file mode 100644
index 0000000..53aef96
--- /dev/null
+++ b/homeworks/05_Vladimir_Aleksiev/rs.py
@@ -0,0 +1,44 @@
+import math
+
+def circle(c1,r1,c2,r2):
+    
+    x=math.sqrt((c2[0] - c1[0])**2 + (c2[1] - c1[1])**2) - (r2 + r1)
+    if(x == 0):
+        print("tuching")
+        return 
+
+    if((c2 == c1)and(r1==r2)):
+        print("matching")
+        return
+    
+    if(r1>r2):
+        d= math.sqrt( (c2[0]-c1[0])**2 + (c2[1]-c1[1])**2 )
+        if(r1> d):
+            print("circle1 is containing circle2")
+            return
+    else:
+        e= math.sqrt( (c1[0]-c2[0])**2 + (c1[1]-c2[1])**2 )
+        if(r2>e):
+            print("circle2 is containing circle1")
+            return
+
+    if(x < 0):
+        print("intercepting")
+        return
+
+    if(x > 0):
+        print("NO Common")
+        print("the distance in px = ", x)
+        return
+
+
+
+x=2
+y=0
+x1=2
+y2=0
+cx1=(x,y)
+cx2=(x1,y2)
+rx1=2
+rx2=1
+circle(cx1,rx1,cx2,rx2)
\ No newline at end of file
diff --git a/homeworks/05_Vladimir_Aleksiev/zad2.py b/homeworks/05_Vladimir_Aleksiev/zad2.py
new file mode 100644
index 0000000..5c2457b
--- /dev/null
+++ b/homeworks/05_Vladimir_Aleksiev/zad2.py
@@ -0,0 +1,20 @@
+
+N = input("Enter how many stairs you will climb: ")
+
+def num_ways(n):
+
+    if n < 0:
+        return 0
+
+    if n == 0:
+        return 1
+
+    nums = [0] * (n+1)
+    nums[0] = 1
+    nums[1] = 2
+
+    for i in range(1, n+1):
+        nums[i] = nums[i-1] + nums[i-2]
+    return nums[n]
+
+print(num_ways(int(N)))
diff --git a/homeworks/05_Vladimir_Aleksiev/zad3.py b/homeworks/05_Vladimir_Aleksiev/zad3.py
new file mode 100644
index 0000000..527a191
--- /dev/null
+++ b/homeworks/05_Vladimir_Aleksiev/zad3.py
@@ -0,0 +1,16 @@
+from typing import Any
+
+def replace(element: Any, find: str, replace: str):
+    if element == find:
+        return replace
+
+    for i in range(len(element)):
+        if element[i] == find:
+            element[i] = replace
+
+    return element
+
+
+list = [ 'a', 1, [ ['a', 'b'], 1], ([1, 3, 'a'], 'b')]
+res = replace(list, 'a', 'c')
+print(res)