#include<cstdio>
#include<cstring>

void process()
{
    int dim = 0;
    int dimfin = 0;

        char word[100];
        scanf("%s",word);
        if(strcmp(word,"unsigned") == 0)
        {
            memset(word,0,sizeof(word));
            scanf("%s",word);
        }

    if(strcmp(word,"char")==0)
        dim = 1;
    if(strcmp(word,"short")==0)
        dim = 2;
    if(strcmp(word,"int") == 0)
        dim = 4;

  //  printf("%s",word);
    memset(word,0,sizeof(word));

    scanf("%s",word);
    int n = strlen(word);
    for(int i = 0; i<n; ++i)
    {
        int elemnou = dim;
        while(word[i] != ',' && i<n)
        {
            ++i;
            int elemnuonou = 0;
            while(word[i]>='0' && word[i] <= '9')
            {
                elemnuonou *=10;
                elemnuonou +=  word[i] - '0';
                ++i;
            }
            if(elemnuonou)
                elemnou *=elemnuonou;
        }
        dimfin +=elemnou;
    }

    printf("%d\n", dimfin);

}


int main()
{

        while(!feof(stdin))
        {
            process();
        }

        return 0;
}