#include<fstream>


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

char s[100010];
int i;

int expresie();
int termen();
int factor();

int main(){
    fin>>s;
    fout<<expresie();


    return 0;
}

int expresie(){
    int r = termen();
    while(s[i] == '+' || s[i] == '-'){
        i++;
        if(s[i-1]== '+')
            r += termen();
        else
            r -= termen();
    }
    return r;
}
int termen(){
    int r = factor();
    while(s[i] == '*' || s[i] == '/'){
        i++;
        if(s[i-1]== '*')
            r *= factor();
        else
            r /= factor();
    }
    return r;
}
int factor(){
    int r=0;
    if(s[i]=='('){
        i++;
        r = expresie();
        i++;
    }else
        while(s[i]>='0' && s[i]<='9'){
            r = r*10 + s[i] - '0';
            i++;
        }
    return r;
}