#include <stdio.h>

main(argc, argv)
int argc;
char **argv;
{
  int i;
  int j, top;
  
  i = 3;

  if (argc != 2) {
    fprintf(stderr, "Usage: spin iter-before-write\n");
    exit(1);
  }
  top = atoi(argv[1]);
  if (top <= 0) {
    while (1) {
      i = -i;
    }
  } else {
    while (1) {
      for (j = 0; j < top; j++) i = -i;
      write(1, "a", 1);
    }
  }

}