diff --git a/main.py b/main.py
index 71a3166..891daf9 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,70 @@
+from ipaddress import ip_address
 def solution():
-    pass
+    pass 
+#The user input ip like 192.168.0.1/24
+ip = input("Input the ip/mask and enter : ")
 
+#The string splits at this specified separator('/') between ip and mask
+ip = ip.split('/') # The ip located before ('/') 1
+mask = ip[1] # The mask located after (/) 1
+ipAddress = ip[0].split('.') # ip[0] = The ip before (/) split ('.') four like (192.168.0.1)
 
-if __name__ == '__main__':
-    pass
+
+# Function of Class type and Set public, private or private
+def solution(ipAddress):
+    
+    if int(ipAddress[0]) in range(0,128) and int(mask) in range(8,32): #If the first term is (0 to 128) this is class A
+        classType = 'A'
+        classError = False
+    elif int(ipAddress[0]) in range(128,192)and int(mask) in range(8,32):#If the first term is (128 to 192) this is class B
+        classType = 'B'
+        classError = False
+    elif int(ipAddress[0]) in range(192, 224)and int(mask) in range(8,32):#If the first term is (192 to 224) this is class C
+        classType = 'C'
+        classError = False
+    elif int(ipAddress[0]) in range(224, 240)and int(mask) in range(8,32):#If the first term is (224 to 240) this is class D
+        classType = 'D'
+        classError = False
+    elif int(ipAddress[0]) in range(240, 255)and int(mask) in range(8,32):#If the first term is (240 to 255) this is class E
+        classType = 'E'
+        classError = False
+    else:
+        classType = ''
+        classError = True
+        
+   # Set public, private or private
+   # if the first range == 10 in mask (8,32) or 172 and  Second range of 172 is 16 or 31 in mask (8,32) or first range = 192 and Second range of 192 = 168  in mask (8,32) ===== Private
+    if (int(ipAddress[0]) ==10 and int(mask) in range(8,32)) or (int(ipAddress[0]) == 172 and int(ipAddress[1]) in range(16,31) and int(mask) in range(8,32)) or (int(ipAddress[0]) == 192 and int(ipAddress[1]) == 168 and int(mask) in range(8,32)):
+        setType = 'Private'
+        # if first range = 127 and four range = 1 or 255 in mask = 8  ==== Special
+    elif int(ipAddress[0]) == 127 and int(mask) in range(8,32) and int(ipAddress[3]) in range(1,255) :
+        setType = 'Special'
+        # other is Public
+    elif int(mask) in range(8,32):
+        setType = 'Public'
+    else:
+        setType = ''
+        classError = True
+        
+        
+    return classType , setType , classError
+
+
+if __name__ =='__main__':
+    pass 
+     #Here to assign or specify and return the values of variables
+    classType , setType , classError  = solution(ipAddress)
+     
+    x=0
+    while x < len(ipAddress):
+        if int(ipAddress[x]) in range(0,255):
+            ipRange = True
+        else:
+            ipRange = False
+        x+=1
+    if ipRange == True:
+        if classError == True:
+            print("Invalid IP address")
+        elif classError ==False:
+         print("Output: Class: "+ classType +"\nDesignation " + setType)
+