#include <iostream>
#include <fstream>
#include <string.h>
#include <stdlib.h>
using namespace std;
int nr,ok=1;
char a[101];
int main()
{
    ifstream f("fis.in");
    // f>>a;
    // cin>>a;
    while(cin.peek()!=EOF)
    {
        int n=0,s=0;
        cin>>a;
        if(strcmp(a,"unsigned")==0)
        {
            cin>>a;
        }


        if(strcmp(a,"char")==0)
            s=1;
        else if(strcmp(a,"short")==0)
            s=2;
        else if(strcmp(a,"int")==0)
            s=4;
        cin.get(a,100);
        for(int i=0; i<strlen(a); i++)
        {
            int nr=1,p=1;
            //cout<<s;

            while(a[i]=='[' && i<strlen(a))
            {
                i++;
                p=1;
                p=atoi(a+i);


                nr*=p;
                while(a[i]!=']' )
                    i++;
                i++;
                
            }

            if(a[i]==',' || i==strlen(a)-1 ||(a[i-1]==']' &&i==strlen(a)) )
            n+=(nr*s);


        }



        cout<<n<< '\n';
    }
    return 0;
}