#include <stdio.h>
#include <stdlib.h>

#define MAXN (65536 * 2)

int
main (void)
{
  for (;;)
    {
      static unsigned dest[MAXN];
      static char done[MAXN];
      
      unsigned n, k, next, steps;

      scanf ("%u%u", &n, &k);
      if (n == 0 || k == 0)
	break;
      memset (dest, 0, (n + 1) * sizeof (*dest));
      memset (done, 0, (n + 1) * sizeof (*done));
      next = 1;
      while (k-- != 0)
	{
	  unsigned s;

	  scanf ("%u", &s);
	  while (s-- != 0)
	    {
	      unsigned i;

	      scanf ("%u", &i);
	      dest[i] = next++;
	    }
	}
      steps = 0;
      for (k = 1; k <= n; k++)
	{
	  if (dest[k] != 0 && dest[k] != k && done[k] == 0)
	    {
	      unsigned t;

	      for (t = k; dest[t] != 0 && dest[t] != k && done[t] == 0; t = dest[t])
		{
		  done[t] = 1;
		  steps++;
		}
	      if (dest[t] == k)
		{
		  done[t] = 1;
		  steps += 2;
		}
	    }
	}
      if (steps == 0)
	printf ("No optimization needed.\n");
      else
	printf ("We need %u move operations.\n", steps);
    }
  return EXIT_SUCCESS;
}