#include <iostream>
#include <fstream>

using namespace std;

char S[100010],*p=S;

long termen();
long factor();

long eval(){
    long r = termen();
    while (*p == '+' || *p == '-'){
        if(*p == '+'){
            p++;
            r += termen();
        }else{
            p++;
            r -= termen ();
        }
    }
    return r;
}

long termen(){
    long r = factor();
    while (*p == '*' || *p == '/'){
        if(*p=='*'){
            p++;
            r *= factor();
        }else{
            p++;
            r /= factor();
        }
    }
    return r;
}

long factor(){
    long r = 0;
    if(*p == '('){
       p++;
       eval();
       p++;
    }else{
        while (*p>='0' && *p<='9'){
            r=r*10+*p-'0';
            p++;
        }
        return r;
    }
}

int main()
{
    ifstream fin("evaluare.in");
    ofstream fout("evaluare.out");
    fin.getline(S,100010);
    fout<<eval()<<'\n';
    return 0;
}