#include <cstdio>
#include <cstdlib>
#include <cstring>
int main()
{
    char s[128], t[128];
    while (~scanf("%s", s)) {
        strcpy(t, s);
        char* p=strtok(s, "+*");
        int res=atoi(p);
        while (p=strtok(0, "+*")) {
            int x=atoi(p);
            if (t[p-s-1]=='+')
                res*=x;
            else
                res+=x;
        }
        printf("%d\n", res);
    }
}