Because the input info states that "The single line of the input contains a sequence" ...
The "Single" line
but I got #1WA

here's my code:
#include<stdio.h>
char str[10005],output[85],temp;
int i,ptr;
main()
{
      /*
      while (scanf("%c",&temp)!=EOF)
      {
            if (temp >= 32)
               str[i++]=temp;
      }
      */
      gets(str);

      for (i=0;str[i];i++)
      {
          if (str[i]=='>')
          {
             if (output[ptr]!=0)
             {
                ptr++;
                if (ptr==80)
                   ptr=0;
             }
          }

          else if (str[i]=='<')
          {
               if (ptr>0)
                  ptr--;
          }

          else
          {
              output[ptr]=str[i];
              ptr++;

              if (ptr==80)
                 ptr=0;
          }

      }
      printf("%s",output);
      scanf(" ");
}

Where is my mistake?
Thanks :)

ты строчку длины 85 выводишь