#include <stdio.h>
int main()
{
 int a[7]={0,1,4,9,16,25,36};
 int b[7];
 int i;
 int total,count;
 for(i=1;i<=6;i++)
 scanf("%d",&b[i]);
 while(b[1]!=0||b[2]!=0||b[3]!=0||b[4]!=0||b[5]!=0||b[6]!=0)
 {
  total=0;
  for(i=1;i<=6;i++)
  total+=a[i]*b[i];
  //printf("%d\n",total);
  if(total%36==0)
  count=total/36;
  else
  count=total/36+1;
  printf("%d\n",count);
  for(i=1;i<=6;i++)
  scanf("%d",&b[i]);
 }
 //getch();
 return 0;
}