#include <stdio.h>
#include <string.h>
#include <stdlib.h>
char s[1005], a[1005];
int p = 0;
int max(int a, int b){return a > b ? a : b;}
int main()
{
    int len, i;
    while(gets(s))
    {
        len = strlen(s);
        for(i = 0; i <= len; i++)
        {
            if(s[i] == '#')
            {
                p--;
                p = max(0, p);
            }
            else if(s[i] == '@')p = 0;
            else a[p++] = s[i];
        }
        printf("%s\n", a);
    }
    return 0;
}