int mode;
int i,j;
int field[10][10];
{
  rd(mode);
  rep(i,10) rep(j,10) field[i][j]=j;
  field[0..7][1..7] = field[0..7][1..7] + field[0..7][0..];
  field[1..7][7] = field[1..7][7] + field[0..][7];
  assert(mode!=1|| field[7][7] >= 550);
  assert(mode!=2|| field[7][7] <= 550);
  assert(mode!=3|| field[7][7] >= 55);
  assert(mode!=4|| field[7][7] <= 55);
  assert(mode!=5|| field[0][7] <= 55);
}