#include <bits/stdc++.h>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

string v = "(", aux;
int poz = 1;

long long adunScad(int& i);
long long inmulImpar(int& i, long long rez);
long long termen(int& i);

int main()
{
    fin >> aux;

    v += aux + ")";

    fout << adunScad(poz);

    return 0;
}

long long adunScad(int& i){
    long long rez = 0;

    while(v[i] != ')'){
        rez += termen(i);
    }

    i++;

    return rez;
}

long long inmulImpar(int& i, long long rez){
    long long aux = 0;

    while(v[i] == '*' || v[i] == '/'){
        char semn = v[i];

        i++;

        aux = termen(i);

        if(semn == '*'){
            rez *= aux;
        }else{
            rez /= aux;
        }
    }

    return rez;
}

long long termen(int& i){
    long long rez = 0;
    char semn;
    bool eInmul = 0;

    semn = v[i];

    if(v[i-1] == '*' || v[i-1] == '/')
        eInmul = 1;

    if('0' <= semn && semn <= '9'){
        semn = '+';
    }else if(semn == '('){
        semn = '+';
    }else{
        i++;
    }

    while('0' <= v[i] && v[i] <= '9'){
        rez = rez*10 + v[i] - '0';
        i++;
    }

    if(v[i] == '('){
        rez += adunScad(++i);
    }

    if((v[i] == '*' || v[i] == '/') && !eInmul){
        rez = inmulImpar(i, rez);
    }

    if(semn == '+' || semn == '*'){
        return rez;
    }else{
        return -rez;
    }
}