#include <fstream>
#define NMax 100010
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
int ind;
char s[NMax];

long long term();
long long fact();

long long eval()
{
    long long rez=term();
    while (s[ind]=='+' || s[ind]=='-') {
        if (s[ind]=='+') {
            ind++;
            rez+=term();
        }
        else if (s[ind]=='-') {
            ind++;
            rez-=term();
        }
    }
    return rez;
}
long long term()
{
    long long rez=fact();
    while (s[ind]=='*' || s[ind]=='/') {
        if (s[ind]=='*') {
            ind++;
            rez*=fact();
        }
        else if (s[ind]=='/') {
            ind++;
            rez/=fact();
        }
    }
    return rez;
}
long long fact()
{
    long long rez=0;
    if (s[ind]=='(') {
        ind++;
        rez=eval();
        ind++;
    }
    else {
        while (s[ind] >= '0' && s[ind]<='9') {
            rez = rez*10 + s[ind] - '0';
            ind++;
        }
    }
    return rez;
}
int main()
{
    f.get(s, 100001);
    g<<eval();
    return 0;
}