Reykjavik University

Courses/ E-402-STFO/ STFO24/ Module 1/ Problems/ Sums of Primes
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Problem C
Sums of Primes

Languages en is

You are given a positive integer n and should print the sum of all primes strictly less than n.

Input

The first and only line of input contains a positive integer n≤107.

Output

Print the sum of all primes strictly less than n.

Sample Input 1 Sample Output 1 
10000

5736396
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