diff --git a/strong.py b/strong.py
index 13cf2dc5..273913db 100644
--- a/strong.py
+++ b/strong.py
@@ -1,16 +1,14 @@
-sum1=0
-num=int(input("Enter a number:"))
-temp=num
-while(num):
-    i=1
-    f=1
-    r=num%10
-    while(i<=r):
-        f=f*i
-        i=i+1
-    sum1=sum1+f
-    num=num//10
-if(sum1==temp):
+factorials = [1] * 10
+for i in range(2, 10):
+    factorials[i] = factorials[i-1] * i
+sum1 = 0
+num = int(input("Enter a number:"))
+temp = num
+while num:
+    r = num % 10  
+    sum1 += factorials[r]  
+    num //= 10  
+if sum1 == temp:
     print("The number is a strong number")
 else:
-    print("The number is not a strong number")
+    print("The number is not a strong number")
\ No newline at end of file