#include "impstrings.h"
#define unless(cond) if (!(cond))
int main(int _imp_argc, char **_imp_argv)
{
  const int MAXLINES = 20;
  const int MAXLINEWIDTH = 80;
  char AA[(MAXLINES * MAXLINEWIDTH) - (1) + 1], BB[(MAXLINES * MAXLINEWIDTH) - (1) + 1];
  char CC[(MAXLINES * MAXLINEWIDTH) - (1) + 1];
}