#include <cstring>
#include <cstdio>
using namespace std;

char s[2000],s1[2000],maax,mult,nr,p,rez,suma,cont;


int main()
{
    freopen("decl.in","r",stdin);
  //  freopen("decl.out","w",stdout);
    while(gets(s))
    {
        maax=0;
        nr=0;
        if(s[0]=='u')
        {
            nr=9;
        }
        if(s[nr]=='c')
        {
            nr=nr+5;
            mult=1;
        }
        else
        {
            if(s[nr]=='s')
            {
                nr=nr+6;
                mult=2;
            }
            else
            {
                nr=nr+4;
                mult=4;
            }
        }
        cont=1;
        for(int j=nr;j<strlen(s);j++)
        {
            if(s[j]!=','&&j!=strlen(s)-1)
            {
                s1[cont]=s[j];
                cont++;
            }
            else
            {
                cont--;
                p=1;
                rez=1;
                suma=0;
                for(int k=cont;k>=1;k--)
                {
                    if(s1[k]>='0'&&s1[k]<='9')
                    {
                        suma=suma+p*(s1[k]-'0');
                        p=p*10;
                    }
                    else
                    {
                        if(suma==0)
                            suma++;
                        if(s1[k]!='[')
                            suma=1;
                        rez=rez*suma;
                        p=1;
                        suma=0;
                    }
                }
                maax=maax+rez;
                cont=1;
            }
        }
        printf("%d\n",maax*mult);
    }
    return 0;
}