diff --git a/a8c9.c b/a8c9.c
index ff5e08f..4b01716 100644
--- a/a8c9.c
+++ b/a8c9.c
@@ -1,4 +1,4 @@
-#include<stdio.h>
+/*#include<stdio.h>
 int main()
 {
         int n,x,i,s=0;
@@ -16,5 +16,75 @@ int main()
         }
         printf("sum of last digits are %d",s);
 }
+
+*/
+Updated Using Recursion
+//More Efficient
+#include <bits/stdc++.h>
+using namespace std;
+#define ll           long long
+#define rep(i,j,n)   for(ll i=j;i<n;i++)
+#define scn(a)       scanf("%lld",&a)
+#define nl           printf("\n")
+#define scns(a,b)    scanf("%lld %lld",&a,&b)
+int solve(int n)
+{
+ 
+    if (n == 0)  
+    return 0;  
+    return (n % 10 + solve(n / 10));  
+}  
+  
+
+int main()  
+{  
+    int n;
+    cin>>n; 
+    int result = solve(n);  
+    cout <<result<<endl;  
+    return 0;  
+}  
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