编程题：Prime Numbers

Your program reads two natural numbers m and n in, and prints out the sum of all prime numbers within $[m, n]$, where $1 \leqslant m\le n\leqslant 10^4$.

### Input Format:

Two positive whole numbers.

### Output Format:

A number which is the sum of all the prime numbers within [m, n].

### Sample Input:
in
10 100


### Sample Output:

out
1043











答案：若无答案欢迎评论