import java.io.* ;
public class box {
   static long sumsq(int x, int y) {
      return x*(long)x + y*(long)y ;
   }
   static long distsquare(int x, int y, int w, int h, int d,
                          int tx, int ty, int tz, int togo) {
      if (tz == 0)
         return sumsq(x + tx, y + ty) ;
      if (togo == 0)
         return Long.MAX_VALUE ;
      return Math.min(
         distsquare(x+w, y, d, h, w, tz, ty, w-tx, togo-1),
         distsquare(x, y+h, w, d, h, tx, tz, h-ty, togo-1)) ;
   }
   public static void main(String[] args) throws Exception {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) ;
      while (true) {
         String[] f = br.readLine().split(" ") ;
         int w = Integer.parseInt(f[0]) ;
         int h = Integer.parseInt(f[1]) ;
         int d = Integer.parseInt(f[2]) ;
         int x = Integer.parseInt(f[3]) ;
         int y = Integer.parseInt(f[4]) ;
         int z = Integer.parseInt(f[5]) ;
         if (w + h + d == 0)
            break ;
         System.out.println(Math.min(Math.min(
               distsquare(0, 0, w, h, d, x, y, z, 6),
               distsquare(0, 0, h, d, w, y, z, x, 6)),
              distsquare(0, 0, d, w, h, z, x, y, 6))) ;
      }
   }
}