2017/advent9.c

   1 #define _GNU_SOURCE 1
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6
   7 int main(void)
   8 {
   9   int depth = 0;
  10   int score = 0;
  11   int garbage = 0;
  12   int count = 0;
  13   int c;
  14   while ((c = getchar ()) >= 0)
  15     if (garbage) {
  16       if (c == '!')
  17         getchar ();
  18       else if (c == '>')
  19         garbage = 0;
  20       else
  21         count++;
  22     } else {
  23       if (c == '{')
  24         score += ++depth;
  25       else if (c == '}')
  26         depth--;
  27       else if (c == '<')
  28         garbage = 1;
  29     }
  30   if (depth)
  31     printf("oops\n");
  32   printf("score=%d garbage=%d\n", score, count);
  33   return 0;
  34 }