View Code of Problem 27

#include<stdio.h>
#include<string.h>
#include<math.h>
#define MAX 1000000+10
#define Max(a,b) a>b?a:b
#define Min(a,b) a<b?a:b
int main()
{
	int a,b;
	while(scanf("%d%d",&a,&b)!=EOF)
	{
		int i,j;
		int sum=0;
		int c;
		if(a>b)
		{
			c=a;
			a=b;
			b=c;
		}
		for(i=a+1;i<b;i++)
		{
			if(i==1) break;
			for(j=2;j<=sqrt(i);j++)
			{
				if(i%j==0)
				{
					break;		
				}
				
			}	
			if(j>sqrt(i))
				{
					sum+=i;	
				}	
		} 
		printf("%d\n",sum);
	} 
	 

}