void main() {
  int i,j,acer[6][40];

  for (i=0; i<6; i++)
    for (j=0; j<40; j++)
      if (i == 0) acer[i][j]=j+1;
      else
	if (j == 0) acer[i][j]=acer[i-1][1];
	else acer[i][j]=acer[i-1][acer[i][j-1]];
  for (i=0; i<6; i++) {
    for (j=0; j<=9; j++)
      printf("ackerman(%d,%d)=%d ",i,j,acer[i][j]);
    printf("\n");
  }
}