/* Inverse 2d array population */
#include <stdio.h>
int main(void);
int main()
{ int** ipp,* ip,* ipa[16], ia[16<<4], i;
  for (ipp = ipa, i = 0; ((*ipp++ = ip = ia + (i++ << 4)) - ia < 16 << 4);)
    { while ((*ip++ = ip - ia) < (ipp - ipa) << 4)
        printf("%i\n",*(ip-1));
    }
}