6 12 

3

<span style="font-size:14px;">#include<stdio.h>
#include<math.h>
int main()
{
	int a,b;
	while(~scanf("%d%d",&a,&b))
	{
		int lefta,leftb,righta,rightb,len1,len2,sum;
		len1=ceil(sqrt(a));len2=ceil(sqrt(b));
		lefta=(a-(len1-1)*(len1-1)-1)/2+1;
		leftb=(b-(len2-1)*(len2-1)-1)/2+1;
		righta=(len1*len1-a)/2+1;
		rightb=(len2*len2-b)/2+1;
		sum=fabs(len1-len2)+fabs(lefta-leftb)+fabs(righta-rightb);
		printf("%d\n",sum);
	}
	return 0;
}

</span>