#include <iostream>

using namespace std;

int sqdist (int x, int y){
  return x*x+y*y;
}

int compute_dist (int lx, int ly, int lz, int z, int y){
  int mindist = 1000000000;

  mindist = min (mindist, sqdist(lx + ly-y , ly       + z   ));
  mindist = min (mindist, sqdist(lx + z    , 0        + y   ));
  mindist = min (mindist, sqdist(lx + y    , -lz      + lz-z));
  mindist = min (mindist, sqdist(lx + lz-z , -lz-ly   + ly-y));

  return mindist;
}

int main (){
  int lx, ly, lz, x, y, z;
  while (cin >> lx >> ly >> lz >> x >> y >> z){
    if (lx == 0 && ly == 0 && lz == 0 && x == 0 && y == 0 && z == 0) break;

    if (x == 0 || y == 0 || z == 0)
      cout << x*x+y*y+z*z << endl;
    else {
      if (x == lx) cout << compute_dist (lx, ly, lz, z, y) << endl;
      else if (y == ly) cout << compute_dist (ly, lz, lx, x, z) << endl;
      else if (z == lz) cout << compute_dist (lz, lx, ly, y, x) << endl;
    }
  }
}