#include<iostream>
using namespace std;

int main()
{
  __int64 lx,ly,lz,x,y,z;
	while(scanf("%I64d%I64d%I64d%I64d%I64d%I64d",&lx,&ly,&lz,&x,&y,&z)&&(lx||ly||lz||x||y||z))
	{
  __int64 min=9999999999;
		if(z==0&&x<lx&&y<ly)
			min=x*x+y*y;
		else
		   if(x==0&&y<ly&&z<lz)
			    min=y*y+z*z;
		     else 
				if(y==0&&x<lx&&z<lz)
					min=x*x+z*z;
				else 
					if(x==lx&&y<ly&&z<lz)
						min=((x+y)*(x+y)+z*z)<((x+z)*(x+z)+y*y)?((x+y)*(x+y)+z*z):((x+z)*(x+z)+y*y);
					else 
						if(y==ly&&x<lx&&z<lz)
                             min=((x+y)*(x+y)+z*z)<((y+z)*(y+z)+x*x)?((x+y)*(x+y)+z*z):((y+z)*(y+z)+x*x);
						else 
							if(z==lz&&x<lx&&y<ly)
						    	 min=((x+z)*(x+z)+y*y)<((y+z)*(y+z)+x*x)?((x+z)*(x+z)+y*y):((y+z)*(y+z)+x*x);
                               else
							   {
                                        if((x+y)*(x+y)+z*z<min)
		                                   	min=(x+y)*(x+y)+z*z;
	                                  	if((x+z)*(x+z)+y*y<min)
	                                 		min=(x+z)*(x+z)+y*y;
	                                 	if((y+z)*(y+z)+x*x<min)
	                                     		min=(y+z)*(y+z)+x*x;
							   }
	  printf("%I64d\n",min);
	}
	return 1;
}