#include <iostream>
#include <string>
#include <cctype>
using namespace std;

int main()
{
    string s;
    while(getline(cin,s)){
        int i=0,fact;
        if(s[0]=='u') i=8;

        while(isspace(s[i])) ++i;

        if(s[i]=='c'){ fact=1; i+=4; }
        else if(s[i]=='i'){ fact=4; i+=3; }
        else{ fact=2; i+=5; }

        while(isspace(s[i])) ++i;

        int total=0;
        int last=1;

        while(i<s.size()){
            while(isalpha(s[i])) ++i;
            while(s[i]=='['){
                ++i;
                int val=0;
                while(isdigit(s[i])){ val=val*10+s[i]-'0'; ++i; }
                last*=val;
                ++i;  //']'
            }
            ++i;   //s[i]==','
            total+=last*fact; last=1;
            while(i<s.size()&&isspace(s[i])) ++i;
        }
        cout<<total<<'\n';
    }
}