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+The number,197 , is called a circular prime because all rotations of the digits: 197,971 and 719  are themselves prime.
+
+There are thirteen such primes below 100: 2,3,5,7,11,13,17,31,37,71,73,79 and 97. Sum of which is 446.
+
+Find the sum of circular primes that are below N?
+
+<b> Rotations can exceed N </b>
+
+#### Input Format
+
+Input contains an integer <b>N</b>. 
+
+#### Output Format
+
+Print the required answer.
+
+#### CONSTRAINTS
+10≤ N ≤ 10^6
+
+#### Sample Input 
+```
+100
+```
+
+#### Sample Output 
+```
+446
+```